Monthly Archives: December 2017

Q: Is it possible to write a big number using a small number? Is there a limit to how much information can be compressed?

Physicist: Although there are tricks that work in very specific circumstances, in general when you “encode” any string of digits using fewer digits, you lose some information.  That means that when you want to reverse the operation and “decode” what … Continue reading

Posted in -- By the Physicist, Combinatorics, Computer Science, Entropy/Information, Math | 8 Comments

Q: Is reactionless propulsion possible?

Physicist: In a word: no. A reactionless drive is basically a closed box with the ability to just start moving, on its own, without touching or exuding anything.  The classic sci-fi tropes of silent flying cars or hovering UFOs are … Continue reading

Posted in -- By the Physicist, Physics, Relativity | 15 Comments