What Were Some of the Notable Successes of the Twentieth-Century

question 43

Essay

What were some of the notable successes of the twentieth-century medical revolution? What challenges remain?

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Definitions:

Runout

A defect that causes side-to-side or lateral movement in a spinning object. In wheels it is commonly caused by imperfections in the wheel’s shape; in disc brakes it can be caused by a distorted rotor, hub flange distortion, or worn wheel bearings.

Electrons

Subatomic particles whose activity creates electric currents.

Current Flow

The movement of electric charge through a conductor, creating an electric circuit.

Resistance

In the context of electricity, it is the opposition that a material offers to the flow of electric current, typically measured in ohms.