Recent content by Smurf

The problem is that pesky conservation-of-momentum thing, which means that you need to throw mass backwards, which means that since e=mc² you need a large heap of energy to create the equivalent of that much mass in photons. Coupled with the inevitable losses when storing that much energy, plus...

You can play around with gyros all you like, but the total angular momentum of your space ship is constant: if it was still before you turned on the gyros it'll be motionless after you turn them off. Re-orienting around a stationary center of mass requires no energy. Strictly speaking, linear...

You can't "disprove" anything anyway. You can only show that whatever effect those Em Drive proponents have been measuring can be explained by perfectly-well-known physics and thus the law of parsimony dictates that their ideas are wrong unless they manage to demonstrate something plausible. In...