[CraigS]

Originally Posted by supernova1965

If Quantum Theory/Quantum Mechanics was used to create the Transistor how come we still call it a Theory

http://www.physics.ucla.edu/~ianb/history/

Hi Warren;

A theory, is an explanation of an observed phenomenon.

The explanation remains an explanation, regardless of whether something has been created from it or not. So the title, 'Theory' stays.

Hope this helps.

Cheers