1871 – Andrew S. Hallidie received a patent for an “endless wire rope way” which he would put into practice as the cable car system in San Francisco, California.
1882 – Thomas Edison received a patent for adding a carbon microphone to the telephone. The patent described finely divided conducting material, like carbon, between metal cups mounted on arms that attached to the mouthpiece diaphragm.
1928 – Anatol M. Josepho received a the first US patent for a fully automatic photographic film developing machine. The Photomaton better known as a PhotoBooth in the US still survives as an app and in dark corners of subway stations.
1949 – The first synchrotron installed at the Radiation Laboratory at the University of California, Berkeley, reached its design energy of 300 MeV.
Read Tom’s science fiction and other fiction books at Merritt’s Books site.