Mon Prof Augmenté
Electromagnetic Spectrum
Age 18 · Physics
The electromagnetic spectrum orders waves by wavelength, from long radio waves to short gamma rays. All these waves travel at the speed of light in a vacuum and carry energy.
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In the picture
- Leftmost glass rod with the widest-spaced sine wave
- Second glass rod from the left
- Fourth glass rod from the left
- Rightmost glass rod with the tightest-spaced sine wave
Examples
- A radio antenna receiving an FM broadcast
- A microwave oven heating food
Key takeaways
- Wavelength and frequency are inversely related.
- Visible light is a small part of the full spectrum.
Quiz: Electromagnetic Spectrum (Age 18)
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What property is used to order the electromagnetic spectrum?
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How do all electromagnetic waves travel in a vacuum?
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What do all waves in the electromagnetic spectrum carry?
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