2 ms·
What'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).
by abecedarius 15y ago
What'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.