Calories (Units of En ergy) Year of Dis cov ery: 1843 What Is It?

Fun Facts: The cal o ries on a food pack age are ac tu ally kilocalories, or
units of 1,000 cal o ries. A kilocalorie is 1,000 times larger than the cal o rie 
used in chem is try and phys ics. A cal o rie is the amount of en ergy needed
to raise the tem per a ture of 1 gram of wa ter 1 de gree Cel sius. If you burn
up 3,500 cal o ries dur ing ex er cise, you will have burned up and lost one
pound. How ever, even vig or ous ex er cise rarely burns more than 1,000
cal o ries per hour.
More to Ex plore
More to Ex plore
Card well, Don ald, ed. The De 
vel 
op 
ment of Sci 
ence and Tech 
nol 
ogy in Nine 
-
teenth-Cen tury Brit ain. Lon don: Ashgate Pub lish ing, 2003.
———. James Joule: A Bi og ra phy. New York: St. Mar tin’s Press, 1997.
Joule, James. The Sci en tific Pa pers of James Prescott Joule. Wash ing ton, DC: Schol -
arly Press, 1996.
Smith, Crosbie. Sci ence of En ergy. Chi cago: Uni ver sity of Chi cago Press, 1999.
Steffens, Henry. James Prescott Joule and the Con cept of En ergy. Sagamore Beach,
MA: Wat son Pub lish ing, 1999.
72 Cal o ries (Units of En ergy)

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Document Outline

• 100 Greatest Science Discoveries of All Time.pdf
  • Calories (Units of Energy)