In terms of relative length of units, a yoctometre ranks as follows: Planck length yoctometre zeptometre. A yoctometre is 1/1000 of a zeptometre (1 zeptometre (zm) = 1,000 yoctometres). The yoctometre,is the distance light travels in about:1Ã·2.99Ã10 35 seconds.
Engines of various sorts have been invented over the last two or three centuries. 1  In 1698, English military engineer, Thomas Savery, invented and patented the first crude steam engine, based on Denis Papin's Digester (pressure cooker) of 1679.
Probably the most historically significant engine ever in production was the Otto-. Langen atmosphere engine, designed and produced by Nicolaus Otto and Eugene. Langen between 1864 and 1878. It was an important stepping stone for the. introduction of the 4 stroke cycle engine later developed by Otto in 1876.