3 ms·
The polarised one is really crazy as it is macroscopic and daily life.
by ngcc_hk 4y ago
The polarised one is really crazy as it is macroscopic and daily life.
- denton-scratch 4y agoIt's also dead easy to do - use a cheap laser pointer, a tinfoil cap with a pinhole, and some polarising lenses from an optician (he gave me a couple for free).