My son and his wife stopped by Sunday unannounced to visit.
I wouldn't answer the door but I did hold up my new medicine container and pointed to the instructions.
Instructions read: 'Take one tablet before bedtime and Keep away from children.'
CryotronIn 1957, the cryotron, a superconductive computer switch was announced in a press release by the Massachusetts Institute of Technology. Developed by Dudley A Buck, the cryotron was the first practical use of superconductivity—the ability of some metals to conduct current with no resistance at a temperature of a few degrees above absolute zero. A fine hair-thickness wire is coiled around a straight wire cooled by liquid helium. Current passes in the straight wire unless halted by the effect of a magnetic field when a current flows in the coil, thus acting like a switch. The cryotron was hailed as a revolutionary device for miniaturizing the room-sized computers of the 1950s. Buck's invention was first recorded in his lab notebook on 15 Dec 1953, and he coined the term “cryotron” in his an entry in Feb 1954.«[Image: in the hand of its inventor, the cryotron, so incredibly small 100 cryotrons could fit in a thimble.] |
