Often, the player needs one object to act as a "key" for another.

The theory says a massive object can act as a gravitational lens, bending and magnifying the light from more distant objects in space.

Notice how one object can act both as a and a at different points, by passing the appropriate method calls on to whichever tool is active.

This way, we can understand how objects act on Earth.

A distant object therefore cannot act on the eye; nor consequently make itself or its properties perceivable to the soul.

Any metal or conductive object placed into the microwave will act as an antenna to some degree, resulting in an electric current.

Some object within the room acoustically couples to sound in the room, and acts as a modulator.

"Traditional data need an application; objects act by themselves," she said.

The inputs, the data or objects acted upon by the operation, enter the box from the left.

The future object acts as a placeholder for the result of the not-yet-performed method invocation.