electromagnetic spectrum. the colors we see only represent a small portion of the electromagnetic...
TRANSCRIPT
Electromagnetic SpectrumElectromagnetic Spectrum
The colors we see only represent a small The colors we see only represent a small portion of the electromagnetic spectrumportion of the electromagnetic spectrum
In order from the shortest wavelength to the longest In order from the shortest wavelength to the longest wavelength:wavelength:
Gamma Rays: Gamma Rays: Shortest wavelengthShortest wavelengthHigh FrequencyHigh FrequencyHigh EnergyHigh EnergyUsed to kill cancer cellsUsed to kill cancer cells
X Rays: Used to take pictures of bones and X Rays: Used to take pictures of bones and teethteeth
Ultraviolet(UV) Rays: Ultraviolet(UV) Rays: Emitted by sun Emitted by sun Can cause our skin to burnCan cause our skin to burn
Visible Light Waves: Visible Light Waves: The only part of the spectrum that we can The only part of the spectrum that we can
see with our eyessee with our eyesViolet is shortest wavelength Violet is shortest wavelength Red is the longest wavelengthRed is the longest wavelengthThe color we see is being reflected while the The color we see is being reflected while the
other colors are absorbedother colors are absorbed
Infrared Waves: Infrared Waves: Found in lasersFound in lasersBody emits infrared waves, which allows night Body emits infrared waves, which allows night
vision goggles to workvision goggles to work
Microwaves:Microwaves:Cooks your food in minutesCooks your food in minutes
Radio Waves:Radio Waves:Emitted from radio stations and picked up by Emitted from radio stations and picked up by
your antennayour antennaStars and other gases in space emit these Stars and other gases in space emit these
also, so we can see what they are made ofalso, so we can see what they are made of
All electromagnetic waves travel at the All electromagnetic waves travel at the same speed in empty space: same speed in empty space:
3 X 10 3 X 10 88 m/s m/s (186,000miles/second)(186,000miles/second)