Hey guys, what do you think the most important discoveries inventions in the last 200 years were?

[G+_Mark Jurisch]

Hey guys, what do you think the most important discoveries/inventions in the last 200 years were?

[G+_Jared Carr]

Light bulb computers

[G+_Fr. Robert Ballecer, SJ]

Spanx

[G+_Shaun Snee]

P valves

[G+_Gerald McEvoy]

Depends.

[G+_610GARAGE]

A/C electric generator and the fact that silicon can be doped to modify the way it acts.

[G+_Terry Henderson]

The Six Transistor AM/FM Radio That Worked With A 9v Battery.

[G+_John Phillips]

Actually the Transistor itself was a huge leap forward and led the way for IC's