Signs Asymend

1. Line or colum of light, heat or electromagnetic radiation.
3. Distance between oorresponding points of two consecutive waves.
4. Discrete packets of energy, called photons.
5. The colored tissue at the front of the eye that cntains the pupil in the center.
6. Opposite of a concave surface; A shape curving outward. it's middle thicker than it's edges.
8. number of waves that pass a fixed point in unit time; the number of cycles or vibrations undergone during one unit of time.
10. An imaginary line forming a right angle with the tangent to a curved surface at a particular point.
11. Type of energy made by vibrations.
13. Most anterior structure of the eye; A Curved transparent structure with a radius of 7.8mm.
14. A complex ocular structure that converts wavelengths of light into neuronal signals that become perceived visual images.
16. The maximum displacement or distance moved by a point on a vibrating body or wave measured from it's equilibrium position.
18. A thin flap of skin that is stretched tight like a drum and vibrates when sound hits it.
19. The amount of energy exerted when a force of one newton applied over a displacement of one meter.

1. Bending of light which can also happen with sound, water and other waves as it passes from one transparent substance onto another.
2. When light bounces off an object. If the surface is smooth and shiny, like glass, water or polished metal.
7. The capacity for doing work; It may exist in potential, kinetic, or chemical forms.
9. A surface or a line that is curved inward.
12. A measure of sound intensity and amplitude.
15. Propagation of disturbances from place to place in a regular and organized way.
17. The opening within the iris through which light passes before reaching the lens and being focused onto the retina.