Light

"Valgus naerab pimeduse tööd. (EVS)"

"Corruption springs from light: 'tis one same power Creates, preserves, destroys; matter whereon It works, on e'er self-transmutative form, Common to now the living, now the dead."

"Seeing into darkness is clarity. Knowing how to yield is strength. Use your own light and return to the source of light. This is called practicing eternity."

"Do not complain and cry and pray, but open your eyes and see, for the light is all about you, and it is so wonderful, so beautiful, so far beyond anything of which men have ever dreamt, for which they have ever prayed, and it is for ever and for ever."

"For I light my candle from their torches."

"The light Begin to bleed, Begin to breathe, Begin to speak. D'you know what? I love you better now."

"Light itself is a great corrective. A thousand wrongs and abuses that are grown in darkness disappear, like owls and bats, before the light of day."

"I never saw an ugly thing in my life: for let the form of an object be what it may-light, shade, and perspective will always make it beautiful."

"Phenomena were accounted for by taking into consideration the frictional resistances that would interfere with rapid vibrations of the electrons. When these frictional resistances were weak, oscillatory disturbances, such as rays of light, could be propogated through the diaelectric, which was then termed transparent (glass). When these frictional forces were considerable, the light ray was unable to set the electrons into vibration; its energy was consumed in the attempt, and as a result it could not proceed; the dielectric was then opaque (ebonite, sulphur)."

"Regardless of the prophetic value of Dirac’s description [on interference] his was probably the first discussion... including a coherent beam of light. In other words, Dirac wrote the first chapter in laser optics."

"May you grow up to be righteous May you grow up to be true May you always know the truth And see the lights surrounding you."

"A man should learn to detect and watch that gleam of light which flashes across his mind from within, more than the lustre of the firmament of bards and sages. Yet he dismisses without notice his thought, because it is his. In every work of genius we recognize our own rejected thoughts: they come back to us with a certain alienated majesty."

"I believe the widespread use of short wavelength blue light may someday be viewed the same as how people now view smoking, asbestos, and radium. Just another terrible idea. My vision is that, for indoor settings, let people choose the lighting that suits them best, including incandescent light, and outdoors use dark sky friendly lighting so we may see the sky, and live our best lives."

"Light (God's eldest daughter!)."

"The black moment is the moment when the real message of transformation is going to come. At the darkest moment comes the light."

"And God said: "Let there be light," and there was light."

"Master, Master of Light, Whose eye dwells in the seeking fingers of the blind, You are still despised and mocked, A man too weak and infirm to be God, A God too much man to call forth adoration."

"There is strong shadow where there is much light."

"The eye owes its existence to the light. Out of indifferent animal organs the light produces an organ to correspond to itself; and so the eye is formed by the light, for the light so that the inner light may meet the outer... If the eye were not sunlike, how could we perceive the light?"

"The obstacle was what Schiller and Koerner once called the "sensual element" in Goethe's philosophy, and which, years after the death of both Kant and Schiller, came out in Goethe in a most typical fashion when young Schopenhauer, a zealous and thorough-going Kantian, tried to explain that light would cease to exist along with the seeing eye. "What!" he said, according to Schopenhauer's own report, "looking at him with his Jove-like eyes,"—"You should rather say that you would not exist if the light could not see you?""

"In absolute clarity, one sees as little as in absolute darkness. Pure light and pure darkness are two voids, they are the same. Only in determined light—and light determined by darkness—therefore only in light obscured as in determined darkness—and darkness is determined by light—therefore only in illuminated darkness can anything be distinguished."

"There can be no doubt that light consists of the motion of a certain substance. For if we examine its production, we find that here on earth it is principally fire and flame which engender it, both of which contain beyond doubt bodies which are in rapid movement, since they dissolve and destroy many other bodies more solid than they: while if we regard its effects, we see that when light is accumulated, say by concave mirrors, it has the property of combustion just as fire has, that is to say, it disunites the parts of bodies, which is assuredly a proof of motion, at least in the true philosophy, in which the causes of all natural effects are conceived as mechanical causes. Which in my judgment must be accomplished or all hope of ever understanding physics is renounced."

"Nations will go to your light"

"I am the light of the world. Whoever follows me will by no means walk in darkness, but will possess the light of life."

"And the light shineth in darkness; and the darkness comprehended it not."

"Every one that doeth evil hateth the light, neither cometh to the light, lest his deeds should be reproved. But he that doeth truth cometh to the light, that his deeds may be made manifest."

"Our faith is a light by nature coming of our endless Day, that is our Father, God. In which light our Mother, Christ, and our good Lord, the Holy Ghost, leadeth us in this passing life. This light is measured discreetly, needfully standing to us in the night. The light is cause of our life; the night is cause of our pain and of all our woe: in which we earn meed and thanks of God. For we, with mercy and grace, steadfastly know and believe our light, going therein wisely and mightily."

"We are actually born out of light, you might say. I believe light is the maker of all material. Material is spent light."

"And this I know; whether the one True Light Kindle to Love, or Wrath consume me quite, One flash of it within the Tavern caught Better than in the temple lost outright."

"Darkness cannot drive out darkness: only light can do that. Hate cannot drive out hate: only love can do that."

"The light in the world comes principally from two sources,—the sun, and the student's lamp."

"The flame that burns Twice as bright burns half as long."

"Genius is not so much a light as it is a constant awareness of the surrounding gloom."

"I will love the light for it shows me the way. Yet I will endure the darkness for it shows me the stars."

"In fact, when the eye perceives bright light one of four reactions may take place. These are, in order of increasing brightness: dazzle, after image formation, flash blindness, and irreversible damage. Most individuals will have experienced dazzle as a result of oncoming car headlights and persistent after images from accidentally staring at the filament of an incandescent bulb. Both dazzle and after images will distort vision for some seconds to minutes. Flash blindness occurs when an extremely bright flash is discharged, usually at night, and again vision is temporarily lost. All three reactions would be useful in temporarily disabling a pilot and causing him to abort close approach to a target. If even higher irradiances reach the retina then irreversible damage may occur. In practice, a laser system that will dazzle at one mile may permanently blind at closer range."

"Velocity of transverse undulations in our hypothetical medium, calculated from the electromagnetic experiments of 'MM'. Kohlrausch and Weber, agrees so exactly with the velocity of light calculated from the optical experiments of M. Fizeau, that we can scarcely avoid the conclusion that light consists in the transverse undulations of the same medium which is the cause of electric and magnetic phenomena."

"The general equations are next applied to the case of a magnetic disturbance propagated through a non-conductive field, and it is shown that the only disturbances which can be so propagated are those which are transverse to the direction of propagation, and that the velocity of propagation is the velocity v, found from experiments such as those of Weber, which expresses the number of electrostatic units of electricity which are contained in one electromagnetic unit. This velocity is so nearly that of light, that it seems we have strong reason to conclude that light itself (including radiant heat, and other radiations if any) is an electromagnetic disturbance in the form of waves propagated through the electromagnetic field according to electromagnetic laws."

"That light is not itself a substance may be proved from the phenomenon of interference. A beam of light from a single source is divided by certain optical methods into two parts, and these, after travelling by different paths, are made to reunite and fall upon a screen. If either half of the beam is stopped, the other falls on the screen and illuminates it, but if both are allowed to pass, the screen in certain places becomes dark, and thus shows that the two portions of light have destroyed each other. Now, we cannot suppose that two bodies when put together can annihilate each other; therefore light cannot be a substance. ... What we have proved is that one portion of light can be the exact opposite of another portion... Such quantities are the measures, not of substances, but always of processes taking place in a substance. We therefore conclude that light is... a process going on in a substance... so that when the two portions [of light] are combined no process goes on at all. ...the light is extinguished when the difference of the length of the paths is an odd multiple of... a half wave-length. ...we see on the screen a set of fringes consisting of dark lines at equal intervals, with bright bands of graduated intensity between them. ...if the two rays are polarized ...when the two planes of polarization are parallel the phenomena of interference appear as above ...As the plane turns ...light bands become less distinct ...at right angles ...illumination of the screen becomes uniform, and no trace of interference can be discovered. ...The process may, however, be an electromagnetic one ...the electric displacement and the magnetic disturbance are perpendicular to each other, either ...supposed to be in the plane of polarization."

"I have also cleared the electromagnetic theory of light from all unwarrantable assumption, so that we may safely determine the velocity of light by measuring the attraction between bodies kept at a given difference of potential, the value of which is known in electromagnetic measure."

"An age is called Dark not because the light fails to shine, but because people refuse to see it."

"With thy long levell'd rule of streaming light."

"He that has light within his own clear breast May sit i' th' centre and enjoy bright day; But he that hides a dark soul and foul thoughts Benighted walks under the mid-day sun."

"Hail, holy light! offspring of heaven firstborn! Or of th' eternal co-eternal beam, May I express thee unblam'd? since God is light And never but in unapproached light Dwelt from eternity, dwelt then in thee, Bright effluence of bright essence increate!"

"Dark with excessive bright."

"And from her native east, To journey through the aery gloom began, Spher'd in a radiant cloud, for yet the sun Was not."

"There swift return Diurnal, merely to officiate light Round this opacous earth, this punctual spot."

"For... small things, there must be something else. There is. We call it the electric interaction (more generally, the electromagnetic interaction), and it arises from an endowment of matter known as the . Standing still, an electrically charged particle throws up an to which other charged particles can respond. Electric or magnetic, charge gives rise to both. Whether we say "electric potential" (because we perceive a charge to be at rest) or "" (because we perceive a charge to be in motion), the difference lies solely in our point of view. The source is one. From the world of mass we descend... into the world of charge, ready to see our most familiar surroundings in a new light. Let there be electric charge."

"DEFIN. II. ... Mathematicians uſually conſider the Rays of Light to be Lines reaching from the luminous Body to the Body illuminated, and the refraction of thoſe Rays to be the bending or breaking of thoſe lines in their paſſing out of one Medium into another. And thus may Rays and Refractions be conſidered, if Light be propagated in an inſtant. But by an Argument taken from the Æquations of the times of the Eclipſes of 𝔍upiter's Satellites, it ſeems that Light is propagated in time, ſpending in its paſſage from the Sun to us about ſeven Minutes of time: And therefore I have choſen to define Rays and Refractions in ſuch general terms as may agree to Light in both caſes."

"I am light; oh that I were night! But this is my loneliness, that I am girded by light. Oh that I were dark and nocturnal! How I would suck at the breasts of light! And even you I would bless, you little twinkling stars and glowworms up there! – And be blissful for your gift of light. But I live in my own light, I drink back into myself the flames that break out of me."

"The light will not shame you, if it shows you your own ugliness, and that ugliness so offends you that you perceive the beauty of the light."