On 2/27/2014 4:38 PM, Russell Standish wrote:
On Fri, Feb 28, 2014 at 12:47:05PM +1300, LizR wrote:
On 28 February 2014 07:47, John Clark <[email protected]> wrote:
Food energy is not all that dilute, a 1000 calorie jelly doughnut has
about as much chemical energy as a hand grenade.
You have 1000 calorie jelly doughnuts??? (What's that in metric units?)
Actually, a calorie _is_ a metric unit (it is defined as the amount of
heat needed to raise 1 gramme of water by 1 degree Celsius (or
Kelvin)), but it is not an SI unit.
Actually, there are two different definitions of "calorie", a small
calorie (as defined above) and a large calorie (equivalent to 1000
small calories) which is commonly used in dieter's books.
Which led to an amusing fad of eating ice to lose weight in the 60's. At 80cal/g just to
melt the ice and another 30cal/g or so to raise it to body temperature it appeared that
just eating some ice cubes could completely cancel out a big meal.
Brent
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