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Comment Anything you can do Argon do better (Score 1) 109

Well, to continue the song metaphor, no, it can't. But which applications can use a replacement gas?

Nitrogen is good for cooling, but helium is better. Nitrogen is also fairly unreactive. Argon is better, and I gather helium is slightly better still. Both can be extracted from the air.

MRIs need newer materials to use nitrogen, but I think they can. Why can't semiconductors use nitrogen or argon?

Comment I'm a human and I want radar (Score 1) 219

I have a very old car, but I recently drove a new rental. Radar has two huge benefits for me. First, I'm bad at checking my blind spots. On a self driving car it could fill in for camera glitches. Second, radar can detect when the car I'm following slows down faster than I can see that the car's getting closer. Especially if it's doppler radar. A self driving system deserves the same info.

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