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Hi I'm Radiant!Welcome to my science blog..I like to EAT and I love talkingandplayingand jokingandbeingcrazyand..you get the idea :D



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Sunday, January 24, 2010

Light
Light comes into your eyes and not OUT OF your eyes.OUR EYES ARE NOT A LIGHT SOURCE.
Light travels in straight lines.
Reflection
The angle of incidence is the angle between the normal and the incident ray.
The angle of reflection is the angle between the normal and the
reflected ray.

There can be regular reflection or diffused/irregular reflection.
Regular reflection occurs when light shines onto a smooth surface,
and a clear image appears.The rays reflected are parellel.
Diffused reflection occurs when light shines onto a rough surface and there is no reflective image.The rays reflected are scattered.

Refraction
Involves density and speed.
Light bends when a light ray travels from one medium to another of a different density (such as from air to water) , and this bending of light is called refraction.
As light enters a medium of higher density, it slows down and bends towards the normal.
For example, light enters glass, a medium of higher density, so it slows down and bends towards the normal.When it travels through the glass and enters air once again, it speeds up and bends away from the normal.


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