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Topic: Wave theory of light

	Light - LearnThis.Info Enclyclopedia (Site not responding. Last check: 2007-10-10)
		Light is electromagnetic radiation with a wavelength that is visible to the eye, or in a more general sense, any electromagnetic radiation in the range from infrared to ultraviolet.
		Descartes' theory is often regarded as the forerunner of the wave theory of light.
		The wave theory was accepted until the late 19th century, when Albert Einstein described the photoelectric effect, by which light striking a surface caused elecrons to change their momentum, which indicated a particle-like nature of light.
	encyclopedia.learnthis.info /l/li/light.html (1956 words)

	The Wave Theory of Light. Sir William Thomson (Lord Kelvin). 1909-14. Scientific Papers. The Harvard Classics
		The wave-length of light is the distance from crest to crest of the wave, or from hollow to hollow.
		Plane-polarised light is light with the vibrations all in a single plane, perpendicular to the plane through the ray which is technically called the “plane of polarisation.” Circularly polarised light consists of undulations of luminiferous ether having a circular motion.
		Light is always polarised when it is reflected from a plate of unsilvered glass, or from water, at a certain definite angle of fifty-six degrees for glass, fifty-two degrees for water, the angle being reckoned in each case from a perpendicular to the surface.
	www.bartleby.com /30/15.html (7699 words)

	ipedia.com: Wave theory of light Article (Site not responding. Last check: 2007-10-10)
		The wave theory of light is the representation of light as an electromagnetic wave.
		In this theory, light is represented as a spectrum of frequencies, some of which we can see and some of which we can...
		In this theory, light is represented as a spectrum of frequencies, some of which we can see (visible light) and some of which we can't (ultraviolet and infrared light).
	www.ipedia.com /wave_theory_of_light.html (124 words)

	AllRefer.com - quantum theory (Physics) - Encyclopedia
		quantum theory, modern physical theory concerned with the emission and absorption of energy by matter and with the motion of material particles; the quantum theory and the theory of relativity together form the theoretical basis of modern physics.
		Just as the theory of relativity assumes importance in the special situation where very large speeds are involved, so the quantum theory is necessary for the special situation where very small quantities are involved, i.e., on the scale of molecules, atoms, and elementary particles.
		Aspects of the quantum theory have provoked vigorous philosophical debates concerning, for example, the uncertainty principle and the statistical nature of all the predictions of the theory.
	reference.allrefer.com /encyclopedia/Q/quantumt.html (210 words)

	quantum theory -> Evolution of Quantum Theory on Encyclopedia.com 2002 (Site not responding. Last check: 2007-10-10)
		While the theory of relativity was largely the work of one man, Albert Einstein, the quantum theory was developed principally over a period of thirty years through the efforts of many scientists.
		The wave mechanics of Erwin Schrödinger (1926) involves the use of a mathematical entity, the wave function, which is related to the probability of finding a particle at a given point in space.
		Quantum mechanics was combined with the theory of relativity in the formulation of P. Dirac (1928), which, in addition, predicted the existence of antiparticles.
	www.encyclopedia.com /html/section/quantumt_EvolutionofQuantumTheory.asp (726 words)

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