ELi5: Physicists say space is ‚flat‘, but how can 3D space be flat? 244 viewsSeptember 3, 2024OtherPhysics Question100.55K September 2, 2024 0 Comments My assumption is that the short answer is that light travels in a 45 degree angle in a space-time diagram? In: Physics 6 Answers ActiveNewestOldest Anonymous Posted September 2, 2024 0 Comments Flat refers to the geometry of the universe. A flat universe is the one you always thought you lived in: Angles of a triangle sum to 180 degrees, parallel lines do not intersect, etc. You are viewing 1 out of 6 answers, click here to view all answers. Register or Login
Latest Answers