AKA Spacelike Cadet.
30 How does faster than light travel violate causality? Feb 17 '13
11 What is the exact gravitational force between two masses including relativistic effects? Dec 29 '12
3 Is equivalent resistance always lower if we add a resistor to a passive electronic circuit? Dec 13 '12
3 What is a clock? Feb 21 '13
3 Setting up a local-coordinate system in space-time using only a single clock and light beams Feb 1 '13