In 1967, acting on Einstein's proof that the speed of light is the most constant dimension in the universe, the International System of Units used two specific wave counts from an emission spectrum of caesium-133 to co-define the second and the metre.
Calories in a large orange. There are: Approximately 86 calories in one large orange. Approximately 13 calories in each ounce, or 28g, of an orange.
Serving Size and Calories. As a food item packed by nature, it can be difficult to determine the exact serving size and calories per serving of a navel orange. According to the USDA Nutrient Database, a 2 7/8-inch diameter navel orange contains 69 calories. Carbohydrates, Fat and Protein Each 2 7/8-inch diameter navel orange contains 17.5 g of carbohydrates, 3 g of fiber, 1 g of protein and less than 1 g of total fat. Carbohydrates turn into glucose during digestion and act as a source of fuel for your cells. The USDA recommends 45 to 65 percent of your total calories come from carbohydrates.