3 ms·
Reflectors, actually. While normally an irrelevant detail, the distinction is quite important here: lasers reflected on mirrors reflect at a complementary angle
by relix 15y ago
Reflectors, actually. While normally an irrelevant detail, the distinction is quite important here: lasers reflected on mirrors reflect at a complementary angle, lasers reflected on a reflector reflect right back at the source, allowing us to actually detect it.
- mturmon 15y agoFor more: http://en.wikipedia.org/wiki/Lunar_Laser_Ranging_experiment http://en.wikipedia.org/wiki/Lunar_Laser_Ranging_experiment