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Properties of Light
Properties of Light
Light Travels extremely Fast (3.0 x 108 m/s in vacuum)
Light Travels in Straight Lines (rectilinear propagation)
Undergoes reflection and refraction
Light Travels as Waves
Is a form of energy
Can be dispersed
Consists of 7 main colours
Part of the electromagnetic spectrum
Formation of Light & Eclipses
Reflections
Refraction
Differences between reflection and refraction
speeds are the same in reflection.
ray travels in the same medium after reflection.
beam of white light does not disperse in reflection/
step 1
step 2
step 3
Total Internal Reflection
Total Internal Reflection
Optical Fiber Cables
Optical Fiber Cables
Dispersion of Light
Dispersion of Light
Light Pollution
Light Pollution
Light Pollution
Effects of Light Pollution
Why Light Pollution is a Problem
ELECTROMAGNETIC RADIATION POLLUTION
ELECTROMAGNETIC RADIATION POLLUTION
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