[RadioAstronomer]

Enstein and these other johnny come latelys had practically nothing to do with that-- or much else that is done in every day engineering and applied physics.

I disagree. Most of the modern "stuff" we use every day is due to something called Quantum Mechanics.

[Brilliant]

Well, yes, but the ironic part is that Einstein had a bone to pick with quantum mechanics.

[Sam Hill]

"Most of the modern "stuff" we use every day is due to something called Quantum Mechanics."

Ridiculous.

99.9% of what we do everyday is based upon classical mechanics.

Quantum Mechanics is used only by people working at the extremes.

As I said above, that is changing, as more and more of the QM is getting applied to the practical everyday world, but it is simply preposterous to claim otherwise.

The stuff that QM is used for in the everyday work of practical applications can probably be counted on one or two hands. E.g., superconductors, superfluids. (Unless you are claiming lasers and semiconductors, etc., as in the provenance of QM, which I think is an over extension.)

But quantum chemistry and other such are changing that.

[Sam Hill]

I meant "required" everywhere I wrote "used" in my previous post.