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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,529

Currently reading http://arstechnica.com/science/guides/2 … s-work.ars in the hopes of understanding how quantum computers work.

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

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**Ricky****Moderator**- Registered: 2005-12-04
- Posts: 3,791

If the phonebook has 10,000 entries, on average you'll need to look through about half of them5,000 entriesbefore you get lucky.

Umm, who looks through a phonebook sequentially? Worst case you would need to look at 14 entries. So it looks like he is talking about an *unsorted* phone book.

"In the real world, this would be a problem. But in mathematics, we can just define a place where this problem doesn't exist. So we'll go ahead and do that now..."

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**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,552

The juicy physics stuff on page 4 to 6 is amazing to try to read.

The 85% reading they get over and over that should be 75%

on the electrons. Then they move over to photons later.

Maybe we should tell ilovephysics about this article.

**igloo** **myrtilles** **fourmis**

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