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Evanescent field

physical science Maturity 9-11

Some energy stays very close to things.

Evanescent wave.jpg
Evanescent wave.jpg
It does not travel far away. It stays near the source. This helps tools work well. It can even help us see tiny things.
Total internal reflection.jpg
Total internal reflection.jpg
Can you find things with energy nearby?

43 words
🖼️ Images & Media (4)
File:Electron density wave - plasmon excitations.png
Electron density wave - plasmon excitations.png
File:Total internal reflection.jpg
Total internal reflection.jpg
File:Evanescent wave.jpg
Evanescent wave.jpg
File:FITR penetration depth.svg
FITR penetration depth.svg
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📚 Content adapted from Wikipedia | Readability: FK 16.7 | Vital Level 5