4 ms·
Laser interferometry is not beyond the scope of an amateur. You just need a laser :-) A true one not a handheld pointer. Then you'd need some optics and a darkr
by ovi256 15y ago
Laser interferometry is not beyond the scope of an amateur. You just need a laser :-) A true one not a handheld pointer. Then you'd need some optics and a darkroom.
- abecedarius 15y agoWhat's wrong with a pointer? Not coherent enough? It seems like a real laser when you shine it on a CD, at least (ghetto diffraction grating).
- ovi256 15y agoYeah, coherence, altough I'm sure you can test for that. Some cheap pointers use nothing more that collimated LEDs.