For how long do I have to aim a laser at the moon to see a dot? - Quora

Answer: There are two possible questions here. The first is simply how long w...   Your Quora Digest Top Stories from Your Feed   For how long do I have to aim a laser at the moon to see a dot? 1.4k Robert Frost, engineer/instructor at NASA There are two possible questions here. The first is simply how long would it take for a laser to travel to the moon and back. The moon is around 384,000 km away. The sp... Read More » What are some really cool ways animals defend themselves? 395 Brian Dunlap, I work on a series of tubes. Langur monkeys and chital (spotted deer) in India, individually with respect to each species, aren't entirely remarkable when it comes to how they defend themselves from p... Read More » What are the most unexpected / shocking / baffling things people encounter when visiting the USA for the first time? 213 Mircea Goia, Traveled in Germany, France and now i... When I came here from an Eastern European country I was "shocked" by: how big are everything (cars, buildings, streets, restaurant portions, clothes and yes, some people t...  Read More » How would it feel to die in an airplane crash like MH17? 1.4k Ramzi Amri, MD/PhD candidate (Surgical Oncology) I am very sorry for your loss and cannot begin to imagine what you are going through. I really would prefer not to speculate on such morbid matters, but knowing people who ... Read More » What was it like to work with Bruce Lee? 78 Joel Rogosin, Writer, Producer & Director, Magnum, ... The reality was that I didn’t work with Bruce that much. I did a series called Longstreet with Jim Franciscus, Marilyn Mason, Peter Mark Richman and Ann Doran. Bruce was su... Read More » What is the ultimate irony? 1.5k Dan Knight, Art, like morality, consists of drawi... China is the world's worst polluter but largest investor in green energy. This is Baotou, China: This is where they make the magnets we use for our wind turbines in the UK... Read More » Who are the most evil humans in history whom most people have never heard of? 194 Donato Santo, "Caesar si viveret, ad remum dareris" Not sure if exactly most people have never heard of him, but some probably haven't, and he's surely overshadowed by higher-profile tyrants, kings, dictators, etc, in slight... Read More » What images will change the way a person sees the world after viewing them? 194 Janie Sanchez Below are images of regular practices in the animal farming industries in the US and UK (they're common worldwide): (*No Gore*) ... Read More » Could two smart computer science Ph.D students create a search engine that unseats Google? How vulnerable is Google to this possibility? 706 Graham Horton, Professor, Innovation Consultant, Ven... 1) No and 2) Not at all. If anything can unseat Google, it won't be better search, it will be something that makes search irrelevant. ... Read More » What is the silliest thing you have done that taught you a lesson? 68 Adriano Horotano Can't decide: - At 4, as one of my friends was banging a stone with a metal pipe I wanted to touch the stone to see if it got hot from the banging. The pipe came down rippi... Read More »   Read More in Your Feed       This email was sent by Quora (650 Castro Street #450, Mountain View, CA 94041). Quora is your best source for knowledge. Unsubscribe from this email.