The EM Spectrum

Julian Alviz-Gransee

Radio Waves

-Frequency range (hertz): 10^4 to 10^12

-2 key characteristics: Lowest energy, lowest frequency, longest wavelength.

-2 uses: Radio, garage door remote

-A danger: Long doses of radio waves is believed to cause cancer.

-How it affects me: Lets me watch TV

-Who discovered: Heinrich Hertz

-2 pics|

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Microwaves

-Frequency range (hertz): 10^8 to 10^12

-2 key characteristics: Higher frequency, shorter wavelengths

-2 uses: microwaves, phones

-A danger: Interferes with airplanes

-How it affects me: Lets me use a microwave to heat things

-Who discovered: Percy Spenser

-2 pics:

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Infrared

-Frequency range (hertz): 10^12 to 10^15

-2 key characteristics: More energy than microwaves, shorter wavelengths

-2 uses: Heat lamp, Night vision

-A danger: Heat strokes

-How it affects me: During camping, I use infrared night goggles at night.

-Who discovered: Frederick William Herschel

-2 pics:

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Visible Light

-Frequency range (hertz): 10^14 to 10^15

-2 key characteristics: Medium energy, medium wavelengths

-2 uses: Vitamin D, Plant growth.

-A danger: Blindness

-How it affects me: Lets me see colours from red to violet.

-2 pics:

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Ultraviolet

-Frequency range (hertz): 10^15 to 10^18

-2 key characteristics: One of the highest energy, high frequency

-2 uses: Sterilize eq. Equipment

-A danger: Sunburn

-How it affects me: when I play sports outside for a long time in the summer, I get sunburnt

-Who discovered: Johann Ritter

-2 pics:

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X-rays

-Frequency range (hertz): 10^16 to 10^21

-2 key characteristics: High energy, very small wavelengths

-2 uses: Surgery Uses, Airport scaner

-A danger: Cancer

-How it affects me: When I break my bone, they can see me.

-Who discovered: Wilhelm Conrad Roentgen

-2 pics:

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Gamma

-Frequency range (hertz): 10^19 to 19^25

-2 key characteristics: Highest energy, highest frequency

-2 uses: MRI

-A danger: you can die!

-How it affects me: I stay away from the sun so I don't die.

-Who discovered: Paul Villard

-2 pics:

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What's the Electromagnetic Spectrum?

The electromagnetic wave spectrum is a range of electromagnetic radiation by wavelengths-starting with the largest -radio waves(lowest frequency) to the absolute smallest- gamma rays (highest frequency) and one of the small sections is "visible light" which is small, but all we can see.

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