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Comment: Re:Reminds me of one engineer's maxim (Score 1) 501

by yo303 (#47322555) Attached to: A Physicist Says He Can Tornado-Proof the Midwest With 1,000-Foot Walls

In theory, the difference between practice and theory is due to practical considerations that theorists find it impractical to fit into their theories.

In practice, theory uses the practice of theorizing about practical matters, while not noticing that the theoretical method practically distorts the theory beyond application to practice.

Theoretically then, the practical facts are that theory is in practice good for predicting what happens in theory, but impractical as a theory with direct implications for practice, except where theory states that the practice is sufficiently close to the theory to make any difference, for all practical purposes, theoretically zero.

In practice this does not happen very often.

Comment: pizza and pi (Score 1) 218

by yo303 (#46488075) Attached to: Happy Pi Day

If you eat pie today, you will increase your circumference by 2*pi*dr.

And if the volume of a pizza of radius z and thickness a is pi*z*z*a, and its density is p, and the Earth's mass times the gravitational constant is u and its distance from the center is l, the force pulling on that pizza is pi*z*z*a*p*u / l*l.

Comment: Re:Renewable Doesn't Mean Invincible (Score 1) 78

by yo303 (#45498307) Attached to: Another Casualty of Typhoon Haiyan: Geothermal Power

I'd rather be asking why they are bothering to have cooling towers,

That part was explained in TFS. It is because after the expanding pressurized hot water expands into steam past turbines, they cool it and run the condensing steam past turbines a second time to get even more energy out of it. Clever.

Comment: Re:Might be? (Score 1) 314

by yo303 (#44794931) Attached to: Research Shows E-Cigs Might Be As Good For Quitting As Nicotine Patches

Enjoy not being addicted while it lasts. Continue, and you will become hooked, just as if you were smoking a few times a week. Nicotine is on a short list of common addictive drugs that include caffeine, alcohol,,heroin, cocaine, meth etc.

But as discussed elsewhere in this thread, it remains to be seen how harmful nicotine addiction is by itself.

You knew the job was dangerous when you took it, Fred. -- Superchicken

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