Torpedoes. The torpedo, a self‐propelled and self‐guided underwater explosive device, was invented in 1866 by Robert Whitehead, a British engineer working for the Austro‐Hungarian Navy. The U.S. Navy evinced early interest in the device and established in 1869 the Torpedo Station at Newport, Rhode Island. When were submarines first usedRead More →

The photon torpedo will be observed by Earthbound observer A to have a speed of 0.86c. That is faster than the 0.75c in B’s frame, of course, but far different than the 1.05c predicted by the Galilean Transformation. What is the difference between a photon and quantum torpedo? The 2010Read More →