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.
The abbreviation is kJ. Calorie is a metric energy unit and scientifically defined as the amount of energy to heat 1 gram of water to 1 celsius degree. As a unit of energy, it equals to 4.184 joules.It is also called a small calorie when used in this context and abbreviated as cal (with small letters).he abbreviation is kJ. Calorie is a metric energy unit and scientifically defined as the amount of energy to heat 1 gram of water to 1 celsius degree. As a unit of energy, it equals to 4.184 joules.