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I'm no physicist or anything, but aren't light waves electromagnetic? Can someone ELI5 how this is fundamentally different from say, a magnetizer/demagnetizer l
by ranger_danger 3y ago
I'm no physicist or anything, but aren't light waves electromagnetic? Can someone ELI5 how this is fundamentally different from say, a magnetizer/demagnetizer like what we already have?
- felsokning 3y agoI, too, am no physicist -- but from what I can discern from the article, they're using the light (presumably, the quanta - or photon) to change the polarity (the light, here, acting as the magnetizer/demagnetizer via spin). This would, in theory, remove the limitations of signaling via copper or the like, which produces the limiting speeds of current RAM implementations.
- ranger_danger 3y agoReminds me of https://www.popsci.com/technology/computer-magnets-technology/ https://www.popsci.com/technology/computer-magnets-technolog...
- _3u10 3y agoTypically magnets are used to create a magnetic field in things, usually using permanent magnets or electrons. Yes light is electromagnetic but electromagnetism is also part of the electroweak force. Whether something is electronic, photonic or harnesses the weak force depends on where the majority of the interaction is. Photons don’t interact with the magnetic force but electrons which do generate photons when they change energy state. You can use a photon to excite an electron which would have electromagnetic effects but it’s not typically what you’d use to induce magentism. Eg. If I asked you to magnetize something you’d use a magnet or electromagnet and not a flash light.