Light or visible light is electromagnetic radiation within the portion of the electromagnetic spectrum that is perceived by the human eye. Visible light is usually defined as having wavelengths in the range of 400–700 nanometres (nm), between the infrared (with longer wavelengths) and the ultraviolet (with shorter wavelengths). This wavelength means a frequency range of roughly 430–750 terahertz (THz).
Light quotes:
When you look at the light bulb above you, you remember Thomas Alva Edison. When the telephone bell rings, you remember Alexander Graham Bell. Marie Curie was the first woman to win the Nobel Prize. When you see the blue sky, you think of Sir C.V. Raman.
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What I need to write well is a combination of heat, light and solitude.
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I consider myself an inventor first and an entrepreneur second. In real life, my hero is Thomas Edison. He was a great inventor, but also an outstanding entrepreneur who was able to sell his inventions to the masses. He didn't just develop the light bulb, he invented the entire electric grid and power distribution system.
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God is not a hypothesis derived from logical assumptions, but an immediate insight, self-evident as light. He is not something to be sought in the darkness with the light of reason. He is the light.
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He who is satisfied has never truly craved, and he who craves for the light of God neglects his ease for ardor.
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Worship is a way of seeing the world in the light of God.
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Fellow citizens, we cannot escape history. We, of this Congress and this administration, will be remembered in spite of ourselves. No personal significance, or insignificance, can spare one or another of us. The fiery trial through which we pass will light us down in honor or dishonor, to the latest generation.
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I am not bound to win, but I am bound to be true. I am not bound to succeed, but I am bound to live by the light that I have. I must stand with anybody that stands right, and stand with him while he is right, and part with him when he goes wrong.
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At the end of the 1970s, I was a young researcher at the Weizmann Institute with an ambitious plan to shed light on one of the major outstanding questions concerning living cells: the process of protein biosynthesis.
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I got into cars through my father. He used to work on cars. My job was to hold the light, which pretty much was the limit of my mechanical abilities.
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The World Series is played in my doubtless too-nostalgic imagination in some kind of autumn afternoon light, and seeing it exclusively in the bitter chill of midnight breaks the spell of even the best of games.
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Everything doesn't happen for a reason, if by this we mean evil is a part of God's plan. But God does ensure that evil will not prevail and that light will always, ultimately, overcome the darkness. If we follow God's lead, our work is to push back the darkness.
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God seeks to influence humanity. This is at the heart of the Christmas story. It is the story of light coming into the darkness, of a Savior to show us the way, of light overcoming the darkness, of God's work to save the world.
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I thought that, with so much current attention focused on the topic of North Korea, I might share what I think are three books which cast a rare light on the elusive realm of North Korea.
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Nothing surprises me on 'Happy Endings,' because the show - I think one of the awesome things about the show is that it's so open to doing anything. We could do a genre episode. We have the green light to do whatever we want. Mostly because no one's watching.
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When I finally got up to Industrial Light And Magic to work on the 'Star Wars' movies as a model-maker, it felt like dying and going to heaven.
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So let us call genocide, genocide. Let us not minimize the deliberate murder of 1.5 million people. Let us have a moral victory that can shine as a light to all nations.
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Joy is like restless day, but peace divine like quiet night, Lead me, O Lord, till perfect Day shall shine through Peace to Light.
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You look up to your parents and you want them to accept you, and you don't want them to look at you in a negative light. So you do things to make them proud and accept you.
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Don't stand back with your arms folded, step forward... There is hope and light to resist injustice and promote peace without violence.
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When my hair is curly, I use Suave coconut conditioner. It's not a leave-in, but I use it like one. It is so light and really brings out my hair's curl. A lot of leave-ins are too heavy, but this one is just perfect. When it's straight, I love Frederick Fekkai Tech Shampoo & Conditioner and their Olive Oil glossing cream.
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In April 2001, I visited Big Bone Lick State Park in Kentucky. The heaps of mastodon and other large skeletons that used to loom out of the brackish backwaters along the Ohio River here are long gone, though the occasional big bone sometimes comes to light.
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However dark, however demanding the realities of existence are, artists provide the lift, the light, the ways to make it through. They help us find the joys and delights, the hopes we need for our days and hours. I am grateful for their gifts.
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I have a lovely light blue Kate Spade wallet. It has pockets for many credit cards, business cards, health insurance cards, and a Burke Williams card for when I want to go to the spa!
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I have not been part of an active counterculture movement, as it is not the approach that I have personally pursued to create a qualitatively beneficial and meaningful impact on society. Perhaps, my belief is along the old saying that 'it is always better to light one candle than to curse the darkness.'
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Appreciation is the highest form of prayer, for it acknowledges the presence of good wherever you shine the light of your thankful thoughts.
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The principle that light can be in two places at the same time is absolutely extraordinary.
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In the light of our culture, these are not unreasonable questions and tactics, but if once again, we try to see the lens through which we look, we can see that there is far too great an emphasis placed on the future.
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Light travels faster than sound. This is why some people appear bright until you hear them speak.
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Truth, like light, blinds. Falsehood, on the contrary, is a beautiful twilight that enhances every object.
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Small bodies, about half a micron in diameter, and later referred to under the name of 'mitochondria' were detected under the light microscope as early as 1894.
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There might've been wires, but I have this ability to make myself light. Well you know what, in ballet, when you kind of lift yourself here, it's all up in the head.
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Every murder turns on a bright hot light, and a lot of people... have to walk out of the shadows.
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The universal medicine for the Soul is the Supreme Reason and Absolute Justice, for the mind, mathematical and practical Truth, for the body, the Quintessence, a combination of light and gold.
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We have all the light we need, we just need to put it in practice.
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An optimist is a person who sees a green light everywhere, while a pessimist sees only the red stoplight... the truly wise person is colorblind.
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At times our own light goes out and is rekindled by a spark from another person. Each of us has cause to think with deep gratitude of those who have lighted the flame within us.
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Sometimes our light goes out but is blown into flame by another human being. Each of us owes deepest thanks to those who have rekindled this light.
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The willow which bends to the tempest, often escapes better than the oak which resists it, and so in great calamities, it sometimes happens that light and frivolous spirits recover their elasticity and presence of mind sooner than those of a loftier character.
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'Biutiful' is a tough film. It doesn't make concessions to the vulgarity of light entertainment. It's not the kind of film that you see every day in the Cineplex. But as an artist, it's the thing that I needed to do.
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I just don't see the light. Where is the light? What am I in this for?
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I would stay two years in San Francisco, then move to New York in the summer of 1991, for the love of a man who lived there. When I arrived in New York, I had a job waiting for me, courtesy of a bookstore I'd worked at in San Francisco, A Different Light. They had a New York store as well, and arranged an employee transfer.
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There is no greater mystery to me than that of light traveling through darkness.
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I want to inspire through example. I hope my books motivate others to open doors and windows that will help them to embrace their own truth, light and joy.
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You can sometimes avoid costly mistakes. Paint a corner of the room a certain color to see how the light affects it. Or buy just one yard of an expensive fabric to see how you like it in your room.
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I always loved bulbs, and I use light a lot in my shows. In my office in Paris, I have 300 bulbs.
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Light is something that can really change your perception of space.
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Religion brings to man an inner strength, spiritual light, and ineffable peace.
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As an adult (after college) and as an artist I thought about what was real, what sustained me - it was Christian Science. I was using that when I didn't know it. Saying yes to the Light and your better instinct.
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We should note that this latter type of shift was successfully amplified to a considerable extent by Russian physicists using the intense light of a ruby laser whose wavelength is close to that of a transition of the potassium atom.
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It's the word 'artful', it's such a great word, with its dark and its light side, its art and its cunning, the craft and the crafty of it - I've been preoccupied with the word 'artful' and the twin notions of 'cornucopia' and 'pickpocket' it suggests for quite some time.
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A living tree is a changing, sleeve shape, a wet, thin, bright green creature that survives in the thin layer between heartwood and bark. It stands waiting for light, which it catches in the close-woven sieves of its leaves.
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I have a fireplace in my kitchen that I light every night, no matter what.
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There's too much darkness in the world. Everywhere you turn, someone is tryin' to tear someone down in some way, everywhere you go, there's a feeling of inadequacy, or a feeling that you're not good enough. I want to bring a certain light to the world.
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I think I've always had that bird's-eye view of myself. I think it's an actor trait... Sometimes it's best just to get lost out there, but other times you have to be aware of where the light's hitting you.
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I've done a lot of dramas, and I've done a lot of serious stuff - some really heavy stuff... which I loved, but I wanted to do something light and airy. I think the challenge for an actor is always to see which parts of you you can explore and go have fun with.
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The tubular steel chair is surely rational from technical and constructive points of view. It is light, suitable for mass production, and so on. But steel and chromium surfaces are not satisfactory from the human point of view.
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It's hard with ballet because your aesthetic really is important. It's different from acting and from film. Nobody wants to watch somebody who is sickly thin. And it's interesting because I have danced with people who are ill, have eating disorders, and a light goes off within them.
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Experience is a revelation in the light of which we renounce our errors of youth for those of age.
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Because you are women, people will force their thinking on you, their boundaries on you. They will tell you how to dress, how to behave, who you can meet and where you can go. Don't live in the shadows of people's judgement. Make your own choices in the light of your own wisdom.
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I'm usually woken by a vibration on my up-band. It's the gradual vibration for about ten seconds, and then the chimes of my blue light. It's just a way to wake gently. It all gently puts me into awake-mode. I play music off of my Sonos playlist. 'The Rachmaninoff Concerto 3 in D-minor', 1st movement.
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I think role models exist, but they usually don't get the light because people like scandal.
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I loved playing football. In this particular match the ball happened to hit my right eye, the only one which I could see light and colour with.
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How do you observe something you can't see? This is the basic question of somebody who's interested in finding and studying black holes. Because black holes are objects whose pull of gravity is so intense that nothing can escape it, not even light, so you can't see it directly.
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Sheridan is still there, he's the president of the Alliance, everything that was in place when the series is there is still there, we're just moving the camera over a couple of light years.
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The elusive truth is that there is nothing stress-producing in the physical world. Things simply are. Molecules move. Light and sound appear.
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The less you think counterfactually, the less you experience stress. Stress, in this light, isn't a bad thing. It's simply a warning system telling you that your mind has lost touch with what's real.
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Interviews, and hence interviewers, are there to help shed light, and to let viewers judge for themselves. We are not judges, juries, commentators or torturers - nor friends, either.
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Limit or eliminate late-night computer and television viewing. A computer or TV screen may seem much dimmer than a light bulb, but these screens often fill your field of vision, mimicking the effects of a room filled with light.
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Shorter daylight hours can affect sleep, productivity and state of mind. Light therapy, also known as phototherapy, may help. It uses light boxes emitting full-spectrum light to simulate sunlight.
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Designing a station with artificial gravity would undoubtedly be a daunting task. Space agencies would have to re-examine many reliable technologies under the light of the new forces these tools would have to endure. Space flight would have to take several steps back before moving forward again.
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Not many people know this about me, but I'm a natural blonde. My hair went from light blonde naturally to a darker kind of blonde. My mother dyed my hair dark when I was a child, as I loved the look then. So I'm basically a natural blonde.
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Allowing myself to love God completely has obviously shed light on my self-love because he loves me more than I could ever love myself.
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Right now, I'm Writing song lyrics. Experimenting with a play. Toying with an idea for a documentary. I hope one of these will eventually be launched into the light of day.
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The brave who focus on all things good and all things beautiful and all things true, even in the small, who give thanks for it and discover joy even in the here and now, they are the change agents who bring fullest Light to all the world.
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I attribute the black tones in my films to Stephen King, Tim Burton, Joe Hill and Richard Matheson. However, most of my writing is influenced by mental health. I'm incredibly passionate about shedding light on the stigmas associated with mental illnesses.
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A light wind swept over the corn, and all nature laughed in the sunshine.
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As I understand it, laws, commands, rules and edicts are for those who have not the light which makres plain the pathway.
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A whole lot of us believers, of all different religions, are ready to turn back the tide of madness by walking together, in both the dark and the light - in other words, through life - registering voters as we go, and keeping the faith.
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I am going to notice the lights of the earth, the sun and the moon and the stars, the lights of our candles as we march, the lights with which spring teases us, the light that is already present.
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Summer nearly does me in every year. It's too hot and the light is unforgiving and the days go on way too long.
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I have been overcome by the beauty and richness of our life together, those early mornings setting out, those evenings gleaming with rivers and lakes below us, still holding the last light.
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Certain periods in history suddenly lift humanity to an observation point where a clear light falls upon a world previously dark.
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Education in the light of present-day knowledge and need calls for some spirited and creative innovations both in the substance and the purpose of current pedagogy.
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My heart is singing for joy this morning! A miracle has happened! The light of understanding has shone upon my little pupil's mind, and behold, all things are changed!
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The soul grows by reincarnation in bodies provided by nature, more complex, more powerful, as the soul unfolds greater and greater faculties. And so the soul climbs upward into the light eternal. And there is no fear for any child of man, for inevitably he climbs towards God.
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Nature is so powerful, so strong. Capturing its essence is not easy - your work becomes a dance with light and the weather. It takes you to a place within yourself.
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Anita Roddick was amazing. Her presence in a room was full of light, and everything she worked to achieve still resonates now.
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Reading was such a formative part of my childhood (along with 'Loony Tunes'), that it is difficult to pin point the most influential book. But, under an interrogation light I would probably have to say 'Jane Eyre' by Charlotte Bronte.
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For a dinner date, I eat light all day to save room, then I go all in: I choose this meal and this order, and I choose you, the person across from me, to share it with. There's a beautiful intimacy in a meal like that.
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You must stand for something! It does not have to be grand, but it must be a positive that brings light to someone else's darkness.
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Relish everything that's inside of you, the imperfections, the darkness, the richness and light and everything. And that makes for a full life.
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Don't tell me the moon is shining, show me the glint of light on broken glass.
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I think that the equator could act as a great equalizer for all life on Earth, celebrated as the great energy belt of the planet. If all our energy grids were synchronized, the light side of the planet could provide energy for the dark side, according to the movement of the sun.
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It's a wonderful thing to make work that is unadorned either by context, framing or label, that can exist in the changing conditions of light, weather, wind.
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This is my breakfast: Two poached eggs, turkey bacon, and a half avocado. The yolks in a poached egg are alkalizing. Avocados are a great source of fat and vitamin E, great for your skin. It's super light and not too heavy. Sometimes I like a little sweet as well, so I have a cup of plain yogurt with blueberries.
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If Democrats were good at thinking like Republicans, they would see the light and stop being Democrats.
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It is during our darkest moments that we must focus to see the light.
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The Supreme Court has a very light backlog. They leave a lot of splits among the circuits, a lot of uncertainty. And I think they ought to work a lot harder.
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The subject must be thought of in terms of the 20th century, of houses he lives in and places he works, in terms of the kind of light the windows in these places let through and by which we see him every day.
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I always wanted to get into politics, but I was never light enough to make the team.
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In the Top 40, half the songs are secret messages to the teen world to drop out, turn on, and groove with the chemicals and light shows at discotheques.
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I think 'Breaking Bad' is brilliant. Good drama in the U.S. is also so funny and blurs the line between light and dark.
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Oh leave the Wise our measures to collate. One thing at least is certain, light has weight. One thing is certain and the rest debate. Light rays, when near the Sun, do not go straight.
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Against Knowledge I have, as the light cynic observed of a certain lady's past, only one serious objection - that there is so much of it.
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The best way to prepare for a night out with a Shakespearean tragedy is to do a bit of reading up in the afternoon, eat a light supper - perhaps Welsh rarebit - and then arrive early to do some stretching exercises in the foyer before curtain-up.
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We have a house in Umbria that we bought just before we went to America. That meant we couldn't go there as often as we thought, but now we're back, we're going to start using it more. I love the light, the countryside, the language and the fact that children are accepted everywhere. The Italians get passionate about everything, too.
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My ideal role would be anything that allows me to play anyone the public is familiar with and to be able to show them that, but in a new light.
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I remember how being young and black and gay and lonely felt. A lot of it was fine, feeling I had the truth and the light and the key, but a lot of it was purely hell.
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I like the light that comes off metal shutters at siesta time in the summer, having a break from driving in the shops at motorway services, the odour of petrol at petrol stations, rolling down little slopes. I hate it when you tread in a puddle and the water soaks your socks.
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I found it possible to observe at least the superficial capillaries of muscles both in the frog and in mammals through a binocular microscope, using strong reflected light as a source of illumination. Resting muscles observed in this way are usually quite pale, and the microscope reveals only a few capillaries at fairly regular intervals.
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Any sauce whatsoever should be smooth, light (without being liquid), glossy to the eye, and decided in taste. When these conditions are fulfilled, it is always easy to digest, even for tired stomachs.
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The intellect of the wise is like glass, it admits the light of heaven and reflects it.
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When walking through the 'valley of shadows,' remember, a shadow is cast by a Light.
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I love donating my time and serving other people. Just seeing the faces of people in need light up when they see you... There is no way I can put it into words. You feel like you did something right.
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Through affliction hath His light shone and His praise been bright unceasingly: this hath been His method through past ages and bygone times.
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It was not until I was in my forties, in the fifth decade of my life, that the sense of place, the spirit of place, became of paramount importance to me. It was then that I began my travels, that I discovered, through photography, the quality of light, and that I gradually became able to paint the mood of place.
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If you look at satellite photographs of the Far East by night, you'll see a large splotch curiously lacking in light. This area of darkness is the Democratic People's Republic of Korea.
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Italian cameramen grow up immersed in an awareness of light. It is part of their mythology.
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The factor most ignored in discussing interstellar flight is the kinetic energy that must be invested in the ship to make its tons of matter move at a substantial fraction of the speed of light.
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If you can see the light at the end of the tunnel, you are looking the wrong way.
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Walking at random through the streets, we came by chance upon the Cathedral of Notre Dame. I shall long remember my first impression of the scene within. The lofty gothic ceiling arched far above my head and through the stained windows the light came but dimly - it was all still, solemn and religious.
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I want to show every part of me and every color of me. And I think, growing up Albanian, I wanted to bring that to light.
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If you're in a dark place, you're there for a reason. And the only way to get through to those kids or to other people going through the same thing is really to meet them in that dark place and then slowly bring them to the light.
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My music is a little dark, and my lyrics are a little darker. Every day, I'm fighting towards the light.
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Given the extent of the exposures of major banks around the world to A.I.G., and in light of the extreme fragility of the system, there was a significant risk that A.I.G.'s failure could have sparked a global banking panic.
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I went to see 'Shine a Light,' and it was the most perfect thing I could have done to watch that man do what he does in front of an audience. It's primarily Mick Jagger, but they're all so confident and relaxed and in love with what they do, and aware of the power of what they do. It's just deeply, deeply attractive.
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Transcendental Meditation, for me, has been a way of turning down the outside racket and turning up the bandwidth of instinct, intuition, concentration, attention. On the light ends, it's a power nap. On the strong ends, it's a giant battery, and that battery doesn't run out.
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There was one titanic guiding light on the film set, and I was in the presence of a true Mahatma, in the deepest and most profound sense of the word.
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We cannot hold a torch to light another's path without brightening our own.
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'Frankenstein' was all about the idea that, through electricity and the destruction of night, man creating light and darkness, we took on god-like powers and then abused them like gods, and we are only men. That's a story about man making a man in his own image. The inversion of natural order.
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Those in the international community that refuse to put red lines before Iran don't have a moral right to place a red light before Israel.
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It's still incredibly hard. Not just honing my craft but kicking down doors, getting my work published. Early on, I could have wallpapered my house with all the rejection letters sent my way. I put thousands of hours and pages into four novels that never saw the light of day.
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You know, every time it comes, every time that light comes on or every time that camera comes on, every time that microphone comes on, the Mac Man seek and destroy.
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I'm a light comedienne, that's really where I live the most often.
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The upside to smoking is that you get to be social. I was looking for a light when I bumped into Ben Harper's manager. A couple of days later, Ben and I were in the studio.
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BB cream is my lifesaver! It's so light on my skin, plus it protects and gives me coverage at the same time. My favorites are from Maybelline and Smashbox.
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As an actor, you're supposed to take jobs that will challenge you or force fans to see you in a different light. By the '90s, I wasn't really an actor anymore. I was someone who went on the road with these gigantic concerts.
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I always try to balance the light with the heavy - a few tears of human spirit in with the sequins and the fringes.
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Divorce can be tough when the woman is the breadwinner. But the Lord can make the dark light.
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Everybody needs a little light in their life, and when they need prayer, they know where to come, because they know I love them all, and I ain't judging nobody.
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Christians should never fail to sense the operation of an angelic glory. It forever eclipses the world of demonic powers, as the sun does a candle's light.
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I feel empowered to be a different kind of writer. The longer I stay here, the more light filters into my work. I feel very American. I belong.
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And only the photographer himself knows the effect he wants. He should know by instinct, grounded in experience, what subjects are enhanced by hard or soft, light or dark treatment.
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Open your refrigerator door, and you summon forth more light than the total amount enjoyed by most households in the 18th century. The world at night, for much of history, was a very dark place indeed.
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We forget just how painfully dim the world was before electricity. A candle, a good candle, provides barely a hundredth of the illumination of a single 100 watt light bulb.
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I've got a lot of people I'm carrying on my back, but it's a light load because I take a lot of pride in who I am and where I came from.
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The down side of Americans being obsessed with pop culture is that they kind of like it light.
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The best kind of comedy to me is when you make people laugh at things they've never laughed at, and also take a light into the darkened corners of people's minds, exposing them to the light.
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Drive through a yellow light, and you may be ticketed thanks to a camera tied onto a pole. Everybody's watching everything. And then sending it out to the world via email.
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When you come into my pieces, it's not an intellectual experience, it's a physical experience. It's coming at your body. There's light, there's sound, the lights in some pieces are going on and off. There's loud roaring sound happening.
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I was raised a Christian, but I wouldn't call myself a Christian now. I think when I was younger it was easier to focus on the negative, nihilist vision... this is sort of picking up on the other half of the body, which is God and white light.
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In faith there is enough light for those who want to believe and enough shadows to blind those who don't.
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People so far have been very fond of the Robert Altman movie, as I am, and when one things goes well it shines light on your other projects and now I seem to have a number of projects that are moving forward.
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After several trillion dollars of stimulation by the Obama Administration and the Fed, one might think the economy would be chugging along at a pretty good clip. But, it just isn't so, and the light at the end of the tunnel is pretty dim. Just ask a small business owner.
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When I pick up the ball and it feels nice and light and small I know I'm going to have a good day. But if I picked it up and it's big and heavy, I know I'm liable to get into a little trouble.
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The doctors have given me a green light. They have said that my heart is significantly more efficient today than it was four months ago. And I am anxious to be the next president of the United States.
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Vote counting and ballot collecting does not occur in the light of day. There are too many occasions when observers and opposing parties lose contact with the ballots.
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For my brother and me, there would be no 'Field of Dreams'-like playing catch, no nature lessons with our old man. Instead, it would be a darkened theater, the projector light coming on, and a new adventure unfolding.
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I think we both have some darkness in us. But when we are together, we tend to concentrate more on the light.
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The eyes of some of the fans at Davis Cup matches scare me. There's no light in them. Fixed emotions. Blind worship. Horror. It makes me think of what happened to us long ago.
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Even so, one step from my grave, I believe that cruelty, spite, The powers of darkness will in time, Be crushed by the spirit of light.
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Shine like the day I set cosmic eyes on you, friend, by the light of the sweet squash in my lovely laser broom.
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Suddenly, I became conscious of the fact that the driver was in the act of pulling up the horses in the courtyard of a vast ruined castle, from whose tall black windows came no ray of light, and whose broken battlements showed a jagged line against the sky.
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There are many ways to experience love. It can feel like a knife in your back, or it can feel like you're being lifted up by winged creatures towards a beautiful blinding light.
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At home, I'm not a rock star. I wear dad-appropriate attire. I drive a truck. And we go out to the mountains to light fires and have barbecues. Even then, The Killers are usually in the back of my mind.
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Most people go, I wish for world peace. But chaos has a place in balancing out the light and the dark in the world. I don't know if I would wish for world peace.
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Light rails are too bus-like to impress most commuters, too squished and close to the ground. Monorails, by contrast, strike a chord with travelers. There's something about the sleek designs, the pillowy rides, and the panoramic views that just enchants.
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Monorails have their own fan club, which claims more than 2,500 members who swap monorail toys and trinkets. Modern light rail can claim no such devoted fan base.
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Black holes provide theoreticians with an important theoretical laboratory to test ideas. Conditions within a black hole are so extreme, that by analyzing aspects of black holes we see space and time in an exotic environment, one that has shed important, and sometimes perplexing, new light on their fundamental nature.
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In the far, far future, essentially all matter will have returned to energy. But because of the enormous expansion of space, this energy will be spread so thinly that it will hardly ever convert back to even the lightest particles of matter. Instead, a faint mist of light will fall for eternity through an ever colder and quieter cosmos.
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I've seen children's eyes light up when I tell them about black holes and the Big Bang.
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The melded nature of space and time is intimately woven with properties of light speed. The inviolable nature of the speed of light is actually, in Einstein's hands, talking about the inviolable nature of cause and effect.
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I'd be interested in finding out if there is a light you walk into, and if you do meet people from your life and walk hand in hand with Jesus. I would hate for my death to be tragic: I'd like to be old when it happens. But hopefully a young death is unlikely.
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I typically shoot underwater with my regular camera in an underwater housing, and then I usually have two big strobes that I use to light. But with whales, you're not going to be able to really light a 45-foot subject. Your strobes are only effective for maybe five or six feet underwater.
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There is no knowledge, no light, no wisdom that you are in possession of, but what you have received it from some source.
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In Old Havana, the names of the streets before the revolution provided a glimpse into the city's state of mind. You might have known someone who lived on the corner of Soul and Bitterness, Solitude and Hope, or Light and Avocado.
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Light or visible light is electromagnetic radiation within the portion of the electromagnetic spectrum that is perceived by the human eye. Visible lively is usually defined as having wavelengths in the range of 400–700 nanometres (nm), between the infrared (with longer wavelengths) and the ultraviolet (with shorter wavelengths). This wavelength means a frequency range of just about 430–750 terahertz (THz).
The primary properties of visible lively are intensity, propagation-direction, frequency or wavelength spectrum and polarization. Its readiness in a vacuum, 299 792 458 metres a second (m/s), is one of the fundamental constants of nature, as with all types of electromagnetic radiation (EMR), light is found in experimental conditions to always put on at this eagerness in a vacuum.
In physics, the term ‘light’ sometimes refers to electromagnetic radiation of any wavelength, whether visible or not. In this sense, gamma rays, X-rays, microwaves and radio waves are moreover light. Like all types of electromagnetic radiation, visible lighthearted propagates as waves. However, the enthusiasm imparted by the waves is absorbed at single locations the exaggeration particles are absorbed. The absorbed simulation of the electromagnetic waves is called a photon and represents the quanta of light. When a nod of open is transformed and absorbed as a photon, the spirit of the tribute instantly collapses to a single location and this location is where the photon “arrives”. This is what is called the greeting function collapse. This dual wave-like and particle-like natural world of vivacious is known as the wave–particle duality. The chemical analysis of light, known as optics, is an important research area in unprejudiced physics.
The main source of light upon Earth is the Sun. Historically, another important source of spacious for humans has been fire, from ancient campfires to modern kerosene lamps. With the increase of electric lights and capacity systems, electric lighting has effectively replaced firelight.