colour theory, light.

Light is a part of the electromagnetic field, which ranges from radio waves to gamma rays.
Electromagnetic radiation wavevs are fluctuations of electric and magnetic fields, which transport energy from one place to another.
Einstein's theory; light could exist in discrete particle-like quantities, which later came to be known as photons. Light can be considered to be particles called photons ,which are massless particles each traveling with wavelike properties at the speed of light. They carry energy and momentum although they have no mass.

Electromagnestim works on the principle that an electric current through a wire generates a magnetic field.

Mathematical Physics, observed by Faraday, later by Maxwell and partially by heaviside and hertz, which took to understanding the nature of light. What is thought of light, is actually a generating wave disturbance in the electromagnetic field.

The part of the electromagnetic spectrum visible to the human eye, extending from extreme red, 760.6 nanometers, to extreme violet, 393.4 nanometers.

Euclid's method consisted of assuming a small set of intuitively appealing axioms, and then proving othe propositions from those axioms. Earlier, many other mathematicians stated these facts, however, Euclid was the first to show how these propositions could fit together into a comprehensive deductive and logical system. The Elements began with plane geometry. Then it went on to to solid geometry and three dimensions. Euclidean geometry desribes physical space.

Empedocles' philosophy was that the four elements are irreducible components of the world, joined and seperated from each other by completing principles.
Greek presocratic philosopher who supposed that the four elements are irreducible components of the world, joined to and separated from each other by competing principles. Love invariably strives to combine everything into a harmonious sphere, which Strife tries to shatter into distinct entities. Human beings corrupted by eating animal flesh, Empedocles, supposed, pursue philosophy in an effort to contribute positively to the cosmic cycle.

Ibn-al Hasan is regarded to be the "father of modern optics."He wrote a book called Optics which proved the intromission theory of vision and turned it into its modern form.
He was recognized for his experimetns on optics including lenses, mirrors, refraction, reflection and the dispersion of light

Intromission theory-
The first was the "emission theory" which maintained that vision occurs when rays emanate from the eyes and are intercepted by visual objects. If we saw an object directly it was by 'means of rays' coming out of the eyes and again falling on the object. A refracted image was, however, seen by 'means of rays' as well, which came out of the eyes, traversed through the air, and after refraction, fell on the visible object which was sighted as the result of the movement of the rays from the eye. This theory was championed by scholars like Euclid and Ptolemy and their followers.

From 1670 to 1672, Newton lectured on optics. During this period he investigated the refraction of light, demonstrating that a prism could decompose white light into a spectrum of colours, and that a lens and a second prism could recompose the multicoloured spectrum into white light.[16]
He also showed that the coloured light does not change its properties by separating out a coloured beam and shining it on various objects. Newton noted that regardless of whether it was reflected or scattered or transmitted, it stayed the same colour. Thus, he observed that colour is the result of objects interacting with already-coloured light rather than objects generating the colour themselves. This is known as Newton's theory of colour.