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A high powered pneumatic or electrically driven device for boring holes into rock.

Rock Drill

A high powered pneumatic or electrically driven device for boring holes into rock.

This is a hammer drill, also known as a rotary hammer, a pneumatically powered mechanism which uses percussion to penetrate rock.

Device for Hammer Drill

This is a hammer drill, also known as a rotary hammer, a pneumatically powered mechanism which uses…

Tension is the force which a gas always exerts when confined to a limited space. In the example, a partially filled football is placed in a glass jar (a receiver) from which air has been exhausted. The football immediately expands. This experiment also works with a bladder. A branch of mechanics that deals with the properties of gases is called pneumatics.

Pneumatics

Tension is the force which a gas always exerts when confined to a limited space. In the example, a partially…