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A real place? There’s an optics experiment I did, bloody fiddly, where a picture goes through some lenses, and there’s a plane of the frequencies, and it goes
by zeristor 3y ago
A real place?
There’s an optics experiment I did, bloody fiddly, where a picture goes through some lenses, and there’s a plane of the frequencies, and it goes through further lenses and is projected on a screen.
By blocking out areas in the frequency plane, you can change the image. It was extremely fiddly so huge thanks to Dr Bruce Sinclair at St Andrew’s.
Physics lab work is where you get to see how things work, although if you go through the theory several months after you’ve done the lab work you’re a bit lost.
- knolan 3y agoFourier optics. This is also how Schlieren works.
- Anotheroneagain 3y agoand there's a plane of frequencies Doesn't that always happen, which is why aperture limits resolution, why you get diffraction spikes with reflecting telescopes, and so on?
- teamonkey 3y agoUpvoted by a fellow Bruce fan
- rasz 3y agoyou can do it in software https://imagemagick.org/Usage/fourier/#noise_removal https://imagemagick.org/Usage/fourier/#noise_removal
- thfuran 3y agoIn software, you can also make pictures of a lot of things that don't exist.
- dotnet00 3y agoYep, that feature of getting the frequency domain representation through optics is pretty convenient for the various microscopies and spectroscopies performed at light sources.