What is a Duvet Cover vs Comforter Cover. The origin of the word duvet dates back to the 1750s. Itâs a French word meaning down. According to Dictionary.com, a duvet is usually a down-filled quilt that often has a removable cover.
kJ (kilojoules) is the Australian measure of how much energy people get from consuming a food or drink. Energy in food and drinks is measured by the number of kJ (kilojoules) it provides. kJ are similar to Calories: 1  1 kJ = 0.2 Calories (Cals)  1 Calorie = 4.2 kJs.
Using the International System of Units, researchers measure energy in joules (J) or in its multiples; the kilojoule (kJ) is most often used for food-related quantities. An older metric system unit of energy, still widely used in food-related contexts, is the calorie; more precisely, the food calorie, large calorie or kilocalorie (kcal or Cal), equal to 4.184 kilojoules. (Contrast the small calorie (cal), equal to 1 / 1000 of a food calorie, that is often used in chemistry and in physics.)