Internal Combustion Engines and Lasers Heat Engines In

Internal Combustion Engines and Lasers

Heat Engines • In 1824 French physicist Sadi Carnot established thermodynamic theory of idealized heat engines. This scientifically established the need for compression to increase the difference between the upper and lower working temperatures.

History of the Internal Combustion Engine • In 1867, Nikolaus August Otto, a German engineer, developed the four-stroke "Otto" cycle, which is widely used in transportation even today. Otto developed the four-stroke internal combustion engine when he was 34 years old.

Then, Now, Future?

Discovery of the Laser • The name laser is an acronym for Light Amplification by the Stimulated Emission of Radiation. In 1917, Albert Einstein first theorized about the process which makes lasers possible called "Stimulated Emission. "

Invention of the Laser • Theodore Maiman was the first person in the world to show a working laser. Gordon Gould was said to create the first laser but was unable to paten it and show it. However Gordon Gould was the first person to actually use the word laser.

Then, Now, Future?

• Zitzewitz, Paul W. Physics Principles and Problems. 2002 e New York: Glencoe, 2002. Print. • Watson, David. "Examples of The Second Law of Thermodynamics. " Science and Technology. N. p. , 2007. Web. 5 Jan. 2011. <http: //www. ftexploring. com/energy/2 nd_Lawb. html>. • Thall, Dr. Edwin. Thermodynamics: Who Wrote the Laws? Florida State College at Jacksonville, n. d. Web. 10 Jan. 2011. http: //mooni. fccj. org/~ethall/ thermo/thermo. htm.