Timeline for Why are electromagnetic waves not able to pass through a hole with a diameter smaller than the wavelength?
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
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| May 29, 2021 at 5:53 | comment | added | HolgerFiedler | A link to Bethe, not behind a paywall web.stanford.edu/class/ee349/Handouts/Bethe_PR1944.pdf | |
| Dec 31, 2014 at 16:55 | comment | added | ProfRob | @EHekkelman I think it would be well worth looking at the duplicate flagged by Ben Crowell. The first part of your paraphrasing looks ok, but the virtual magnetic dipole is what is radiating from the hole, so the smaller that is (and the longer the wavelength), the less efficient it becomes. | |
| Dec 31, 2014 at 12:29 | comment | added | E Hekkelman | Thank you so much for this answer! If I understand correctly, this is how it works: When a lightwave approaches a hole with diameter d, the oscillations with a certain frequency push away and attract electrons in the material, such that those electrons themselves will cause electromagnetic waves. The amount depends on (d/λ)^4 and thus some light is blocked and some is not. The stronger the (kind-of virtual ?) dipole the less light comes through. Is this correct? | |
| Dec 27, 2014 at 13:54 | history | edited | ProfRob | CC BY-SA 3.0 |
added 348 characters in body
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| Dec 27, 2014 at 13:47 | history | answered | ProfRob | CC BY-SA 3.0 |