domingo, 15 de agosto de 2010
Invisible Light
Introductions
Are many types of invisible light.
The invisible light start in:
Radio Waves, Microwaves,
Infrared Light,Utraviolet Light,
X Rays , Gamma Rays.
The little one is the radio waves
and hardlest is gamma rays.
2.MICROWAVES:microwaves are shortwave radio waves.microwave ovens can heat many foods faster , using less enrgy tha a regular oven.
3.INFRARED LIGHT:infrared light means "just beyond red ." All objects give off more infrared waves , depending on their temperature.
4.ULTRAVIOLET LIGHT:ultraviolet(UV)light is made up of waves just shorter than visible violet light on the spectrum.
5.X RAYS: x rays can pass right through most objects.Thicker or denser objects tend to absorb x rays.
Light an Lenses
4.polarization: allowing light vibrations to passthrough in only one direction.
5.refraction: the bending of light rays as they pass from one subtance into another.
6.convex lens: a lens that curves outward (is thicker at the middle than at the edges) and brings light rays together.
7.concave lens : a lens that curves inward ( is thicker at the edges than at the middle) and speads light rays apart.
viernes, 13 de agosto de 2010
Light and Lenses
5.refraction:the bending of light rays as they pass from one subtance into another.
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