General knowledge

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Re: General knowledge

Post by VickyS on Sun Feb 21, 2010 5:37 pm

Is square roots the answer?

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Re: General knowledge

Post by Guest on Sun Feb 21, 2010 6:46 pm

If it is, can someone explain why that's 'i' please?

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Re: General knowledge

Post by stoupaduck on Sun Feb 21, 2010 9:25 pm

"square roots" are not the answer by themeselves, not least because this would not fit with the phrasing of my original question.

However, square roots loom large as does Lydia's suggestion of imaginary numbers
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Re: General knowledge

Post by VickyS on Sun Feb 21, 2010 10:03 pm

In the world of real numbers, an expression like the square root of -9 is unsolvable. (Remember, because the square root of a negative number is not real.) However, by using the imaginary number i we can break this problem down as the square root of (9)(-1).
This can be expressed as the square root of 9 (which is 3) times the square root of -1 (which is i). Thus, the answer to this otherwise unsolvable problem is 3i.

There you go...clear as mud!!!

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Re: General knowledge

Post by feathers on Sun Feb 21, 2010 10:07 pm

Eh?????????

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Re: General knowledge

Post by stoupaduck on Sun Feb 21, 2010 10:44 pm

which in a roundabout way tells you that, "i" is the square root of -1

so, over to Vicky (and we won't even go into 1 divided by zero!!!)
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Re: General knowledge

Post by VickyS on Mon Feb 22, 2010 4:00 pm

If zero is nothing, then surely you can't divide anything by it...?

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Re: General knowledge

Post by kidder on Mon Feb 22, 2010 6:26 pm

Who came up with the imaginary number John? Your imaginary friend?

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Re: General knowledge

Post by stoupaduck on Mon Feb 22, 2010 7:45 pm

I think we should leave Harvey out of this
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Re: General knowledge

Post by VickyS on Wed Mar 10, 2010 8:03 pm

Sorry, I forgot it was my turn...I'm still thinking!

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Re: General knowledge

Post by VickyS on Fri Mar 12, 2010 10:33 pm

Who in their life had times of black, blue and rose?

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Re: General knowledge

Post by Guest on Sun Mar 14, 2010 9:02 am

Picasso?

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Re: General knowledge

Post by VickyS on Sun Mar 14, 2010 11:14 am

Yes Lydia it is Picasso. I put times rather than periods because I thought it was less of a give away!

Over to you.

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Re: General knowledge

Post by Guest on Mon Mar 15, 2010 5:56 pm

Oh bums. I'll have a think.

Right, done that.

What collection is shared amongst Moscow, St Petersburg and Berlin?

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Re: General knowledge

Post by stoupaduck on Mon Mar 15, 2010 7:59 pm

I'm guessing you went to the Berlin one then on your recent jaunt?
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Re: General knowledge

Post by Guest on Tue Mar 16, 2010 3:33 pm

We did indeed.

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Re: General knowledge

Post by stoupaduck on Wed Mar 17, 2010 7:00 pm

Ostasiatische Kunstsammlung!

Lived in Germany for a couple of years as a child but we never got to Berlin as we were practically on the Dutch border.
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Re: General knowledge

Post by Guest on Wed Mar 17, 2010 11:03 pm

Great place. Still haven't written a report - or uploaded any pictures. Lazy wotsit!

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Re: General knowledge

Post by stoupaduck on Thu Mar 18, 2010 9:59 pm

Which famous person's last words are said to be "Oh Dear!"

(I'm sure there may be others but the judges decision is final)
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Re: General knowledge

Post by Guest on Sat Mar 20, 2010 11:40 am

Erm, have I missed something? Did you answer my last question John?

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Re: General knowledge

Post by stoupaduck on Sat Mar 20, 2010 12:42 pm

stoupaduck wrote:Ostasiatische Kunstsammlung!
or the east Asian collection most of which went off to Russia after the war.

I assumed that as you hadn't said this was wrong, that it must be right!
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Re: General knowledge

Post by Guest on Sat Mar 20, 2010 7:17 pm

Oh, sorry. I didn't understand. No, it's wrong. I thought it was some kind of exclamation!! Idjut.

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Re: General knowledge

Post by stoupaduck on Sat Mar 20, 2010 10:26 pm

....and there's me thinking I was being clever - doh wrong again (on both counts)
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Re: General knowledge

Post by Guest on Sun Mar 21, 2010 8:54 am

Well you were - just not clever in the right way.............

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Re: General knowledge

Post by stoupaduck on Tue Mar 23, 2010 4:26 pm

totally stumped!
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Re: General knowledge

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