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Light and all electromagnetic waves trave, at the same speed what speed do they travel at
3 X10 to the power of 8
As each wave front increase in radius will the area increase or decrease with it ?
Area increases
As the energy in a moving wave is distributed over an expanding area what happens to the intensity
The intensity declares as the energy is expanded
Inverse square law formula
I=k/r(squared) I is intensity, K is constant, r is distance from source
What electromagnetic wave can our eyes see and why
Visible light as our eyes can only see a very small range of frequencies
We can sense frequencies a little lower than light as heat, what electromagnetic wave is this ?
Infra red waves
There are frequency above our visible range which can be seen by animals ,what Wave is this ?
Ultra violet light
X-rays are produced by what
High energy atomic electron transitions
Gamma rays are produced by what
By nuclear disintegrations and collision from high energy sub atomic particles
Wavelength can be calculated by
C=f X (speed of light). C is the wavelength F is the frequency
