[edit] In the beginning God..then God said, Let there be Light

What is Light?

[edit] Light is an analogy of God Almighty

[edit] the Scientific study of Light

Quantum physics is mainly involved and focusing on this study..{on this topic :Light)

Quantum physics is a hugely successful theory: the predictions it makes about the behaviour of subatomic particles are extraordinarily accurate. And yet, it raises profound puzzles about reality that remain as yet to be understood.

[edit] What's Quantum Physics?

• Originated in work conducted by Max Planck and Albert Einstein at start of 20th Century

• They discovered that light comes in discrete packets, or quanta, which we call photons

• The Heisenberg Uncertainty principle says certain features of subatomic particles like momentum and position cannot be known precisely at the same time

• Gaps remain, like attempts to find the 'God Particle' that scientists hope to spot in the Large Hadron Collider. It is required to give other particles mass

Light[[1]]

electromagnetic radiation that can be detected by the human eye. In terms of wavelength, electromagnetic radiation occurs over an extremely wide range, from gamma rays with a wavelength of 3 10-14 centimetre to long radio waves measured in millions of kilometres. In that spectrum the wavelengths visible to humans occupy a very narrow band, from about 7 10-5 centimetre (red light) down to about 4 10-5 centimetre (violet). The spectral regions adjacent to the visible band are often referred to as light also, infrared at the one end and ultraviolet at the other. The speed of light in a vacuum is a fundamental physical constant, the currently accepted value of which is exactly 299,792,458 metres per second, or about 186,282 miles per second (299,792 kilometres per second).

Light is treated in a number of articles. For the basic properties of light, see Light; Optics, Principles of. For more general electromagnetic phenomena, see Electromagnetic Radiation; Radiation. For the dual nature of light (as wave and as particle) and the current quantum mechanical understanding of optical phenomena, see Mechanics. For the fundamental role of light in relativity theory, see Relativity. For the role of light in physiological processes, see Sensory Reception: Photoreception; Perception, Human; Photosynthesis. For optical instrumentation and methods of analysis, see Analysis and Measurement, Physical and Chemical: Spectroscopy; Microscopes; Telescopes. For practical and engineering applications, see Photography. The wave-particle nature of light Uncertainty relations

Experiments with the photoelectric effect show that energy can be transferred from one atom to another in a way that suggests that photons are corpuscles--i.e., localized concentrations of energy and momentum. Other experiments imply equally clearly that the light emitted from an atom, when it loses energy, must be represented by wave groups. Both of these sets of experiments are equally valid, and together they require that the photon must have both wave-group and particle properties at the same time.

It will now be assumed that the intensity of the waves gives the relative probability that a suitable detector will detect a photon at a given point. Experimentally, waves and particles are both abstractions, each describing the same physical system. Quantum mechanics does not seek a relationship such that particles are guided by waves according to the laws of classical physics--as in the theory of the English physicist J.J. Thomson, in which photons are pictured as closed tubes of electric force guided by Maxwellian waves. The waves and particles now to be considered do not have all the relevant properties of classical waves and particles. When a photon is absorbed, the whole of a wave group, possibly extending over a large volume, is annihilated. The position of a photon particle cannot be exactly specified. It is known only that it is within the wave group and most likely exists where the waves are most intense. Also the energy and momentum of the photon are determined by the frequency of the waves. Fourier analysis of wave groups shows that, when the wave group is short (so that the position of the photon is fairly well determined), the frequency of the waves and, hence, the energy and momentum of the photon are known only within a wide range. The product of the uncertainty in position and the uncertainty in momentum can never be less than a certain minimum value. It will now be shown how these relations appear in some experimental situations.

In one experiment a parallel beam of light is incident on a slit of width d, producing a diffraction pattern on a screen. The y-coordinate, at the moment when a photon passes through the slit, is known within an uncertainty y = d. The direction of propagation when the photons emerge from the slit is uncertain because of diffraction, but most of the photons are observed within an angular range , in which sin = /d. There is therefore an uncertainty py in the y-component of the momentum (p) of about (h sin )/, so that the product of the two uncertainties, p and y, is in which the sign indicates is of the "order of magnitude of." In a second experiment, monochromatic light is passed through an optical shutter. The shutter is opened for a short time t so that a wave group of duration t and length z = ct passes through the shutter. Then ct is the length l of the wave train. This implies that the frequency varies within a range = 1/t--i.e., that the photon energy varies within a range E h/t so that Et h. More detailed analysis shows that, if the uncertainties t and E are the root mean square deviations of statistical theory, then their product is equal to or larger than h/4; so that Et h/4.

Individual examples do not prove that the uncertainty relations are generally true any more than individual examples prove the general validity of the second law of thermodynamics. The fact that every example agrees, and that ingenious attempts to find exceptions all fail, constitutes a kind of proof by default, but the real proof is in the whole range of experimental work that demonstrates the equal status and inescapable association of wave and particle properties.

goto see Photo-dynamics of light

God is light in human DNA secret

'LINK TO Indeterministic principle'

[edit] COLOR & LIGHT

[edit] Proofs of God