Electromagnetic Waves
What does energy have
to do with waves?
What does energy have
to do with the wave?
• Electromagnetic wave: A
transverse wave that consists
of changing electric and
magnetic fields.
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Electromagnetic wave:
Electromagnetic wave fun facts:
• The energy transferred by this type of wave
is electromagnetic radiation.
Electromagnetic wave fun facts:
• The energy transferred by this type of wave
is electromagnetic radiation.
• They travel at about 300,000,000 meters per
second in a vacuum.
Electromagnetic wave fun facts:
• The energy transferred by this type of wave
is electromagnetic radiation.
• They travel at about 300,000,000 meters per
second in a vacuum.
• Speed = wavelength X frequency
Electromagnetic wave fun facts:
• The energy transferred by this type of wave
is electromagnetic radiation.
• They travel at about 300,000,000 meters per
second in a vacuum.
• Speed = wavelength X frequency
– Wavelength decreases frequency increases.
Electromagnetic wave fun facts:
• The energy transferred by this type of wave
is electromagnetic radiation.
• They travel at about 300,000,000 meters per
second in a vacuum.
• Speed = wavelength X frequency
– Wavelength decreases frequency increases.
– Wavelength increases frequency decreases.
Electromagnetic wave parts from
high energy to low energy:
• Gamma rays:
Electromagnetic wave parts from
high energy to low energy:
• Gamma rays: Used to kill cancer cells
(radiation therapy). Also used for precise
surgeries (very small cuts).
Electromagnetic wave parts from
high energy to low energy:
• Gamma rays: Used to kill cancer cells
(radiation therapy). Also used for precise
surgeries (very small cuts).
• X-rays:
Electromagnetic wave parts from
high energy to low energy:
• Gamma rays: Used to kill cancer cells
(radiation therapy). Also used for precise
surgeries (very small cuts).
• X-rays: Used to take “pictures” of bones.
Electromagnetic wave parts from
high energy to low energy:
• Gamma rays: Used to kill cancer cells
(radiation therapy). Also used for precise
surgeries (very small cuts).
• X-rays: Used to take “pictures” of bones.
• Ultraviolet:
Electromagnetic wave parts from
high energy to low energy:
• Gamma rays: Used to kill cancer cells
(radiation therapy). Also used for precise
surgeries (very small cuts).
• X-rays: Used to take “pictures” of bones.
• Ultraviolet: Low exposure helps your body
produce Vitamin D. High exposure can
cause sunburn or skin cancer.
Electromagnetic wave parts from
high energy to low energy:
• Visible light:
Electromagnetic wave parts from
high energy to low energy:
• Visible light: What human eyes can see.
Each wavelength has a different color.
Electromagnetic wave parts from
high energy to low energy:
• Visible light: What human eyes can see.
Each wavelength has a different color.
• Infrared rays:
Electromagnetic wave parts from
high energy to low energy:
• Visible light: What human eyes can see.
Each wavelength has a different color.
• Infrared rays: Toaster elements, night vision
goggles, paintball lasers, remote controls.
Electromagnetic wave parts from
high energy to low energy:
• Visible light: What human eyes can see.
Each wavelength has a different color.
• Infrared rays: Toaster elements, night vision
goggles, paintball lasers, remote controls.
• Microwave rays:
Electromagnetic wave parts from
high energy to low energy:
• Visible light: What human eyes can see.
Each wavelength has a different color.
• Infrared rays: Toaster elements, night vision
goggles, paintball lasers, remote controls.
• Microwave rays: Microwave ovens and
transmit cellular phone messages. The
shortest radio wave.
Electromagnetic wave parts from
high energy to low energy:
• Visible light: What human eyes can see.
Each wavelength has a different color.
• Infrared rays: Toaster elements, night vision
goggles, paintball lasers, remote controls.
• Microwave rays: Microwave ovens and
transmit cellular phone messages. The
shortest radio wave.
• Radio / TV waves:
Electromagnetic wave parts from
high energy to low energy:
• Visible light: What human eyes can see. Each
wavelength has a different color.
• Infrared rays: Toaster elements, night vision
goggles, paintball lasers, remote controls.
• Microwave rays: Microwave ovens and transmit
cellular phone messages. The shortest radio wave.
• Radio / TV waves: Carry signals through radio
and TV.