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 SI energy unit is the joule. 4.186 Joule = 1 calories. Another common energy unit is the calorie. The calorie, cal, is defined as the amount of energy (heat) needed to increase the temperature of one gram of water by 1oC. The kilocalorie, kcal, equals 1000 small calories. To make life more complicated Nutritional energy values are reported in dietetic calories or the big Calorie.