alt Hacker News> To quantify this influence, the team applied their model to Terbium Gallium Garnet (TGG), a crystal widely used to measure the Faraday effect. They found that the magnetic field of light accounts for about 17% of the observed rotation at visible wavelengths and up to 70% in the infrared range.
Nearly 20% seems already significant, but 70%?! that's massive.
Replies
nrhrjrjrjtntbt • yesterday at 2:52 AM
Nice to see a graph of % magnetic priportion and log wavelength going from radio to gamma.
CamperBob2 • yesterday at 2:58 AM
How did no one notice that before, and what else have they (we) missed?
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Seems to be a minor typo . Paper:
>17.5% of the measured value for Terbium-Gallium-Garnet (TGG) at 800 nm, and up to 75% at 1.3 µm.
Here's what the crystal looks like
https://www.photonchinaa.com/tgg-terbium-gallium-garnet/
Here's transmission plot (UV-IR)
https://www.samaterials.com/terbium-gallium-garnet-crystal.h...
Note there's almost no effect on transmission
Relevant? https://dspace.mit.edu/handle/1721.1/51819