Splitting white light into colours

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Your new ahaDispersion

Different wavelengths can travel at different speeds in a material, so a prism can separate white light into colors. Source: Dispersion (optics) ↗

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34Sound cannot travel throughRECALL
A vacuum
Sound needs a material medium
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35Particle of lightRECALL
Photon
A quantum of electromagnetic radiation
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36This quantity counts complete wave cycles per second.RECALL
Frequency
Measured in hertz
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