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1 calorie definition

1. The alternate spelling calory is archaic. • Until recently it had always been assumed that all calories are the same, regardless of where they came from. 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[6] Berthelot also introduced the convention of capitalizing the kilogram-calorie, as Calorie. The modern calorie (cal) was first recognized as a unit of the cm-g-s system (cgs) in 1896,[6] 1 small kilocalorie (kcal) is equal to 1000 small calories (cal): 1 kcal = 1000 cal . French calorie, from Latin calor heat, from calēre to be warm — more at lee. [21], "kcal" redirects here; this article is about the unit of energy. ≈ 1.162×10−6 kW⋅h ≈ 2.6132×1019 eV, The two definitions most common in older literature appear to be the 15 °C calorie and the thermochemical calorie. Show activity on this post. [3] The SI unit of energy is the joule. Heat is a form of kinetic energy transfer from one medium or object to another. For other uses, see. • Just 200 extra calories each day … 1 kcal = 1 Cal. This page was last edited on 10 January 2021, at 11:15. It comes from Latin calor 'heat'. Kilocalorie: The term used to represent the amount of energy required to raise the temperature of a liter of water one degree centigrade at sea level. We use cookies to enhance your experience on our website, including to provide targeted advertising and track usage. [3][6] The energy in kilojoules E (kJ) is equal to 4.184 times the energy in thermochecmical / food kilocalories E (kcal): E (kJ) = 4.184 × E (kcal-th) International kilocalories to kilojoules. To facilitate comparison, specific energy or energy density figures are often quoted as "calories per serving" or "kcal per 100 g". alongside the already-existing cgs unit of energy, the erg (first suggested by Clausius in 1864, under the name ergon, and officially adopted in 1882). Calorie: A unit of food energy. These example sentences are selected automatically from various online news sources to reflect current usage of the word 'calorie.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. [22] Food nutrients are also often quoted "per 100 g". [18] Australian and New Zealand food labelling laws require the use of kilojoules; kilocalories are allowed to be included on labels in addition to kilojoules, but are not required. The amount of energy required to warm one gram of air-free water from 19.5 to 20.5 °C at standard atmospheric pressure. ≈ 1.168×10−6 kW⋅h 1 kcal th = 4.184 kJ. Accordingly, several different precise definitions of the calorie have been used. (cal) A measure of heat energy representing the amount of heat needed to raise the temperature 1 g of water by 1°C. ", International Organization for Standardization, "Excursion in Chemical Thermodynamics, from the Past into the Future", "The adoption of joules as units of energy", International Union of Pure and Applied Chemistry (IUPAC), "Calculating Calories by Burning Gummy Bears to Death", "Prospects improve for food energy labelling using SI units", "What's the difference between a calorie and a kilojoule", "Australia New Zealand Food Standards Code – Standard 1.2.8 – Nutrition information requirements", "Questions and Answers on the application of the Regulation (EU) N° 1169/2011 on the provision of food information to consumers", "How Do Food Manufacturers Calculate the Calorie Count of Packaged Foods? [1][2] Accordingly, several different precise definitions of the calorie have been used. Until 1948, the latter was defined as 4.1833 international joules; the current standard of 4.184 J was chosen to have the new thermochemical calorie represent the same quantity of energy as before. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. (The word calorie is used instead of the more precise scientific term kilocalorie.) (nutrition) Kilogram calorie or large calorie. Not to be confused with the food Calorie (capital C), which is equal to 1 kilocalorie (1000 calories), or the amount of energy required to raise one kilogram of water by one degree Celsius. Use the term caloriewe mean food calorie actually refers to the small calorie. in per! Please tell us where you read or heard it ( including the quote, if possible.. Standard atmospheric pressure and the starting temperature oldid=999478124, Short description is different Wikidata... At sea level point is to remove any doubt of how much energy 1 and... Each day … definition of a calorie. ease calculations, energy is expressed in 1000-calorie known. On the atmospheric pressure and the starting temperature enhance your experience on our website, including provide! 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