Posted by rbanffy 6 hours ago
He says brown is perceived when you see an orange-wavelength light that is significantly darker than its surroundings, providing the necessary context for your brain to interpret it as brown.
… now, if that setup could be drawn out into a fiber laser as cladding with a wide spectrum neural amplifying core (if such a material exists) that could maybe be something idk
One of its receptors only detects circularly polarized light
But the only thing we know of, in the entire natural world, that emits circularly polarized light... is the reflection off the shell of the mantis shrimp.
We have a hard enough time building shipping-container sized devices that reflect extreme ultraviolet though... so I think a handheld gamma ray laser is off the table for this century.