In British English, the term drive shaft is restricted to a transverse shaft that transmits power to the wheels, especially the front wheels. A drive shaft connecting the gearbox to a rear differential is called a propeller shaft, or prop-shaft. A prop-shaft assembly consists of a propeller shaft, a slip joint and one or more universal joints.
The researchers found that the transparency of food packaging influences snacking habits in different ways depending on the size, visual appeal and healthiness of the food it contains. And the project uncovered some counterintuitive results.
Nearly half of America's food gets thrown out each year â much of which is actually perfectly safe to eat â often because of passed sell-by dates. Here's a little secret about those sell-by date labels you see on food packages: they don't mean that much. The labels, or open dating, are meant to tell grocers how long to keep items on shelves. But consumers should know they're not safety dates, according to the U.S. Department of Agriculture.