If you think it's that they are all sharp and can cut or poke through things, you're partly right, but now add a doorstop to the list. It isn't particularly sharp, and it can't cut anything, but it still belongs, because all the items are examples of wedges. The wedge of is o...
Here's where it gets a little sticky. Some storage devices have what's referred to as flash memory, a confusing term that blurs the line between RAM and storage. Devices with flash memory still hold lots of info, and they do it whether the power's on or not. But unlike hard drives...
Levers belong to a class of devices known as simple machines, which also includes gears, pulleys, inclined planes, wedges and screws. (The word "machine" itself comes from a Greek word that means "help make easier.") All simple machines share one trait: They multiply...
A spring in the secondary clutch operates the cams (wedges), which are sensitive to torque. As the engine's RPM increases and the primary transmits power, these cams squeeze together and tighten the belt. The process continues as the snowmobile accelerates. Once it reaches its top speed...