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radioactive carbon dating animation-34

A necessary condition for vision: the entrance of light into the eye.xistence de deux types de sources de lumire : The light beam. Sun-Earth-Moon Phases of the Moon, eclipses: simplified interpretation. It heats up and transfers part of the energy received from outside the form of heat.

First notions of colored lights: - As a filter; - Continuous spectrum; - Superposition of colored lights. Principle of image formation in geometrical optics.

Concentration of energy with the thin lens convergent. Safety: danger of direct observation of the sun through a converging lens. Vision results from the formation of an image on the retina.

Experimental approach to corrections of the defects of the eye (myopia, hyperopia).

The program is fully covered in this website, from flash animations and interactive exercises.

For each course, an entertainment and exercise are possible.

Electricity, chemistry, mechanics, optics are common themes at all levels.

Existence of two types of light sources: - Primary sources (stars, sun ...); - Scattering objects (planets, satellites, white walls ...). Own shadow, shadow and shadow cone: interpretation in terms of light rays.

- The light can propagate in a vacuum and in transparent media like air, water and glass.