Download Electromagnetic Spectrum and Light

Electromagnetic Spectrum and
Light
Electromagnetic Waves
Electromagnetic waves are transverse waves
that consist of changing electric and magnetic
fields
Electromagnetic Waves
They are produced when an electric charge
vibrates and accelerates
Electromagnetic waves
Electromagnetic waves can travel through
empty space as well as matter
The transfer of energy by electromagnetic waves
traveling through matter or through space is
called electromagnetic radiation
The Electromagnetic Spectrum
The electromagnetic spectrum consists of radio
waves, infrared rays ,visible light, ultraviolet
rays, x-rays, and gamma rays
Each type of wave is characterized by specific
wavelength and frequencies
As wavelength shortens, frequency becomes
higher
Radio Waves
Radio waves are used in radio and television
technologies
They are also used in radar technologies
Microwaves
Microwaves has a slightly short wavelength and
higher frequency than radio waves
Microwaves are used in kitchen appliances used
to heat food
Infrared Rays
Infrared waves are used as a source of heat and
also to discover sources of heat
Infrared rays are not visible
Used in heat sensing
technologies
Visible Light
These waves are the visible part of the
spectrum. Visible light is broken into six colors
(red, orange, yellow, green, blue, violet)
Each color has a specific wavelength and
frequency
Ultraviolet Rays
In moderation, exposure to UV rays help your
body to produce vitamin D
However, if overly exposed to UV rays, they can
damage your skin as well as your eyes
X-rays
X-rays are most commonly used in medical
technology
X-rays can take pictures of the inside of solid
objects
Gamma Rays
Gamma rays are used in the medical field to kill
cancer cells, take pictures of the brain, and can
also be used for industrial inspection purposes
Gamma rays have the shortest wavelength and
the highest frequency on the
EM spectrum
Video
https://www.youtube.com/watch?v=HPcAWNlVl
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