PBS Space Time host Gabe Perez-Giz explores whether a circle can be a straight line in a recent episode. The answer is rather complicated, and is the first part of Perez-Giz’s three-part explanation of general relativity.
General Relativity! Spacetime! And… Curved Lines? On this week’s episode of Spacetime, Gabe talks about what it actually means for a line to be straight so we can better understand what we mean by the idea of “curved Spacetime”.