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  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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Topic review (newest first)

bobbym
2013-04-05 18:53:56

Hi gAr;

Yes, I know about that one. There is also some at the OEIS.

gAr
2013-04-05 18:48:44

Hi,

Here's a discussion about the same problem : http://www.ocf.berkeley.edu/~wwu/cgi-bi … 1103172669

bobbym
2013-04-05 18:28:43

Not true, a while back a new type of type of material was discovered or delivered that would superconduct at much higher temperatures. The race with not much success for a room temperature superconductor has been on ever since.

Agnishom
2013-04-05 13:34:31

Yes, but such things are not real

bobbym
2013-04-05 04:50:05

When substances get very cold the resistance decreases. As you approach absolute zero the resistance drops off to nothing. Current begins to flow in the substance by itself. This is called superconductivity. Follow?

Agnishom
2013-04-05 04:38:40

Then, describe it, if you please

bobbym
2013-04-05 04:35:31

I can give a very loose definition or you can google it. It is surprising that you have not seen it demonstrated in physics class.

Agnishom
2013-04-05 04:33:06

No, should I google it?

bobbym
2013-04-05 04:29:02

Let's talk about what we think we know. You have heard of the Meisner effect?

Agnishom
2013-04-05 04:24:00

Yes

But I would like to hear about levitation

bobbym
2013-04-05 04:21:32

The question of the intersecting chords. Are you satisfied with it?

Agnishom
2013-04-05 04:17:11

Which question are we done with?

bobbym
2013-04-05 04:13:44

About what in particular?

Agnishom
2013-04-05 04:04:01

I am not sure I understood what you mean

bobbym
2013-04-05 03:50:53

Yes, but we do not have to talk about such things for many years.

Hopefully, we are now done with this question.

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