Frederick Methvan Whyte
Frederick Methvan Whyte (March 2, 1865 – 1941 Athens) was a mechanical engineer of Dutch background who worked for the New York Central in the United States. He is most widely known as the person who developed Whyte notation to describe the different wheel arrangements of steam locomotives in 1900.
Yotta-
Yotta is the largest decimal unit prefix in the metric system, denoting a factor of 10 or ; that is, one million million million million, or one septillion. It has the unit symbol Y. The prefix name is derived from the Ancient Greek (), meaning "eight", because it is equal to 1,000. It was added as an SI prefix to the International System of Units (SI) in 1991.