- #1
SF
I was playing with a laser pointer and a concave mirror and I managed to get a 5mm beam to spread over a 30cm area.
http://img361.imageshack.us/img361/1884/mspaintfg0.png
http://img228.imageshack.us/img228/1866/lpuc9.jpg
http://img228.imageshack.us/img228/3581/lp0ii9.jpg
The irregular pattern remained stationary even when I moved the beam, so I guess it's due to (a) irregularities in the mirror or (b) impurities in the laser's lens?
http://img361.imageshack.us/img361/1884/mspaintfg0.png
http://img228.imageshack.us/img228/1866/lpuc9.jpg
http://img228.imageshack.us/img228/3581/lp0ii9.jpg
The irregular pattern remained stationary even when I moved the beam, so I guess it's due to (a) irregularities in the mirror or (b) impurities in the laser's lens?
Last edited by a moderator: