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  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#1 Re: Dark Discussions at Cafe Infinity » Reaction of alkali metals with water » 2009-05-20 05:51:30

Actually, no-one has actually isolated Francium. It's a sort of theoretical element. Its existence is only proved on paper. The reason is that its most stable isotope, francium-223, has a half-life of only 22 minutes. There are many more isotopes with much shorter half-lifes. Also, the largest amount ever collected was a cluster of around 10000 atoms, amongst Uranuim and Barium isotopes.

#2 Re: Dark Discussions at Cafe Infinity » De- » 2009-05-16 01:13:34

I was a knight, but I was disgraced by the crown. My sword was destroyed, and my exploits discredited.

Triple word score. A bit like scrabble.
Also, why is scrabble called scrabble? Scrabbling describes frantic movements of the hands...Like scrabbling at a slippery thing like a glacier...

#4 Dark Discussions at Cafe Infinity » In response... » 2009-05-15 09:13:21

Ninja 101
Replies: 84

Well, if we are in need of a topic of conversation, why not Cryptozoology?
I have always found it interesting, because I'm open-minded. ^^

#5 Re: Introductions » Hi to everyone » 2009-05-02 05:38:47

Fine greetings to you, bobbym. You, too abilash81.

#8 Re: Introductions » Older, Wiser...Back! » 2009-03-30 06:01:57

Of course they are. They don't understand the data the process.

#9 Re: Introductions » Older, Wiser...Back! » 2009-03-27 05:02:53

And also, they're really stupid...

#10 Re: Introductions » Older, Wiser...Back! » 2009-03-19 07:14:39

I don't think they find it logical to kill people at the moment, sooo...

#11 Re: Introductions » Older, Wiser...Back! » 2009-03-18 08:12:24

Or rather, a fear of Logic-Machines. It's what it means ^^

#12 Re: Introductions » Older, Wiser...Back! » 2009-03-18 05:10:50

Yeah...
No worries on your being grounded, eh? ^^

#13 Re: Formulas » Discussions About The Formulas » 2009-03-15 07:56:13

If this hasn't already been stated...
Surely it's 'Formulae'
It is a Latin word, after all...
I used to say formulae in Chemistry...

#14 Re: Introductions » Older, Wiser...Back! » 2009-03-15 07:48:51

Thanks.
Also. the replies are late, for which I apologise.

#16 Re: Introductions » Older, Wiser...Back! » 2009-02-27 09:31:39

No, it's got some stomach-bug there as well.

#17 Re: Introductions » Older, Wiser...Back! » 2009-02-27 07:42:19

Thanks, lightning. It's a pain. (annoyance)

#19 Re: Introductions » Older, Wiser...Back! » 2009-02-24 04:12:49

No, got a cold-thing and a stomach complaint. It'll be over soon, I think.

#20 Re: Introductions » Older, Wiser...Back! » 2009-02-23 07:02:35

I'd be fixing it now if I didn't feel so bad. Illness-wise.

#22 Re: Introductions » Older, Wiser...Back! » 2009-02-22 09:05:24

It was just a poor quality image.

#23 Re: This is Cool » Calculate your personal horizon. » 2009-02-22 09:03:47

Approximately, I should have written...

#24 Re: Introductions » Older, Wiser...Back! » 2009-02-22 04:55:19

Thanks for the warm welcome-back ^^
I'm reworking that picture. It's a little pixellated.

#25 This is Cool » Calculate your personal horizon. » 2009-02-21 23:21:39

Ninja 101
Replies: 10

I recently came across the equation:
d=√1½h
(Where d is distance and h is your height)
So the distance that you can see is the square-root of one-and-a-half times your height, so a 6ft person can see 3 miles. Good, eh?

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