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Energy units: Difference between revisions
→Energy/units
(Created page with "=Energy/units= ''Physicists'' measure energy in ''joules'', because a joule is based entirely on metric units {{x|kg * m<sup>2</sup> / s<sup>2</sup>}}. But a joule is a bit too small for the kinds of calculations we do on this wiki. Here are some other energy units for comparison: {|class="wikitable" !Unit !Joules !Note |- |watt second |1 |Electrical ''power'' is often measured in ''watts''. A watt is the same as ''1 joule per second''. |- |calorie (lowercase) |4 |...") |
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=Energy/units= | =Energy/units= | ||
''Physicists'' measure [[energy]] in ''joules'', because a joule is based entirely on metric units {{x|kg * m<sup>2</sup> / s<sup>2</sup>}}. But a joule is a bit too small for the kinds of calculations we do on this wiki. | ''Physicists'' measure [[energy]] in ''joules'', because a joule is based entirely on metric units {{x|kg * m<sup>2</sup> / s<sup>2</sup>}}. But a joule is a bit too small for the kinds of calculations we do on this wiki. | ||
Here are some other energy units for comparison: | |||
{|class="wikitable" | {|class="wikitable" | ||
!Unit | !Unit | ||
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|calorie (lowercase) | |calorie (lowercase) | ||
|4 | |4 | ||
|This is '''not''' the unit for measuring food. This is an old outdated unit. | |This is '''not''' the unit for measuring food. This is an old outdated unit.<br /><small>{{p2|(show formal definition)|The amount of energy needed to heat 1 '''gram''' of water up by 1 degree Celsius.}}</small> | ||
|- | |- | ||
|kilojoule | |kilojoule | ||
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|[[Term:kalories|kalorie]]<br /><br />kcal<br /><br />kilocalorie<br /><br />Calorie (uppercase) | |[[Term:kalories|kalorie]]<br /><br />kcal<br /><br />kilocalorie<br /><br />Calorie (uppercase) | ||
|4,184 | |4,184 | ||
|'''This is''' the unit used for measuring [[food]] energy | |'''This is''' the unit used for measuring [[food]] energy.<br /><br />For example, "A diet of 2000 Calories" (which would be 8,368,000 joules).<br /><br /><small>{{p2|(show formal definition of unit)|The amount of energy needed to heat 1 '''kilogram''' of water up by 1 degree Celsius.}}</small> | ||
|- | |- | ||
|megajoule | |megajoule | ||