How can one Calorie equal a thousand calories?
A food Calorie and a small calorie can describe the same energy using numbers a thousand times apart. The capital-C convention usually means a kilocalorie, so the apparent contradiction starts with the unit name rather than anything mysterious happening to the food.
Questions you could explore
- How do food labels use Calories, kilocalories, and kilojoules for the same energy?
Start reading
- OpenStax / Rice University14.1 Heat
Explains the thousandfold unit convention and connects calories with energy measured in joules.
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