The releasing of downward pressure on rocks because of removal of overlying material by erosion Unloading can cause the development of horizontal bedding in once solid rock
Selling securities or commodities when prices are declining to preclude further loss
At some points on a race track, the inside wheels can lift up because of high cornering forces This causes a normal ball diff or gear diff to transfer all the available power to the wheel that is in the air (For an example of this, pull the throttle gently on your car while holding one tire - all the power at that end of the car will go to the opposite, free, wheel ) This is because the differential will put any power at the wheel that is the easiest to turn This is called diff "unloading" To counter this, racers sometimes use one-way diffs, which allow the tires connected to the one-way diff to continue providing power the wheel on the ground, even if a wheel on the same axle is in the air
The process by which dirt, orginally stopped by the filter, is released back into the airstream
Selling shares off when prices are falling to avoid further loss Bulls, when they get tired waiting for the price to rise, tend to unload when the market is falling, causing prices to fall further