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.
Gottlieb Daimler used a new engine invented by engineer, Nicolaus August Otto. Otto invented the first Four-Stroke Internal-Combustion Engine in 1876. He called it the Otto Cycle Engine. As soon as he completed his engine, Daimler (a former Otto employee) built it into a motorcycle. History of the Harley Davidson Motorcycle.