# Electromagnetic Spectrum

• Created by: cjohn12
• Created on: 16-04-18 14:23
• Electromagnetic Spectrum
• in a vacuum
• light, and radiation travel at the same speed
• 2.997 925 x10^8  ms^-1
• This is usually denoted as the letter 'c'
• For every frequency of radiation you can calculate the corresponding wavelength
• speed of light = frequency of radiation X Wavelength in vacuum
• Inverse square law
• Waves transfer energy
• Waves are propagated from a point. This point will be spherical
• PROPAGATED = spread put
• surface are of a sphere is 4xPixR^2
• Intensity of the wave is shown in the formula
• Energy is a quantity that is always conserved
• Waves are propagated from a point. This point will be spherical
• PROPAGATED = spread put
• surface are of a sphere is 4xPixR^2
• Intensity of the wave is shown in the formula
• I = K/R^2
• I = intensity of wave
• R = distance from source
• Your eyes can detect a very small range of frequencies.
• This range is called visible light
• Reigons
• Electromagnetic Spectrum
• in a vacuum
• light, and radiation travel at the same speed
• 2.997 925 x10^8  ms^-1
• This is usually denoted as the letter 'c'
• For every frequency of radiation you can calculate the corresponding wavelength
• speed of light = frequency of radiation X Wavelength in vacuum
• Inverse square law
• Waves transfer energy
• Energy is a quantity that is always conserved
• You can sense frequencies just a little lower then the red of light as heat warming.
• This is called infra-red radiation
• You can sense frequencies just a little lower then the red of light as heat warming.
• The frequencies that can not be seen by humans but by other animals such as bees which help plants grow and cause sunburn.
• This is called Ultra-Violet
• Reigons

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