Math Notes

Posted in Science & Math by Greg Ross on July 3rd, 2007

35 – 32 – 52 = 75 – 72 – 52


Rimshot

Posted in Humor,Science & Math by Greg Ross on June 29th, 2007

A neutron walks into a bar and orders a beer.

“How much do I owe you?” he says.

“For you,” says the bartender, “no charge.”


A Mathematical Limerick

Posted in Poems,Science & Math by Greg Ross on June 27th, 2007

math limerick

The integral z-squared dz
From one to the cube root of three
Times the cosine
Of three pi over nine
Equals log of the cube root of e.


Math Notes

Posted in Science & Math by Greg Ross on June 22nd, 2007

144648 = 861 × 168 = 492 × 294

185472 = 672 × 276 = 384 × 483

9949716 = 2583 × 3852 = 1476 × 6741

16746912 = 2556 × 6552 = 4473 × 3744


The Goldbach Conjecture

Posted in Science & Math by Greg Ross on June 19th, 2007

Every even number is the sum of two primes.

Is that true? No one knows. Originally proposed in 1742, it’s been tested as far as 1018, but the jury’s still out.


Black Tie Optional

Posted in History,Science & Math by Greg Ross on June 18th, 2007

http://en.wikipedia.org/wiki/Image:Crystal_palace_iguanodon.gif

English biologist Richard Owen designed a collection of life-size concrete dinosaurs for London’s Crystal Palace.

On New Year’s Eve 1853, he hosted a dinner for 21 inside the iguanodon.


Live and Let Die

Posted in Entertainment,Science & Math by Greg Ross on June 14th, 2007

James Bond never really explains why he likes his martinis “shaken, not stirred,” so in 1999 the University of Western Ontario’s biochemistry department decided to find out.

They discovered that a shaken gin martini has stronger antioxidant properties than a stirred one — which would help Bond avoid cardiovascular disease, stroke, and cataracts.

In their writeup for the British Medical Journal, they conclude, “007′s profound state of health may be due, at least in part, to compliant bartenders.”

See also Silly Old Bear.


A Self-Descriptive Number

Posted in Science & Math by Greg Ross on June 13th, 2007

In the number 6210001000:

  • The digit 0 occurs 6 times
  • The digit 1 occurs 2 times
  • The digit 2 occurs 1 time
  • The digit 3 occurs 0 times
  • The digit 4 occurs 0 times
  • The digit 5 occurs 0 times
  • The digit 6 occurs 1 time
  • The digit 7 occurs 0 times
  • The digit 8 occurs 0 times
  • The digit 9 occurs 0 times

See also The Quick Brown Fox …


Math Notes

Posted in Science & Math by Greg Ross on June 8th, 2007

115132219018763992565095597973971522401 = 139 + 139 + 539 + 139 + 339 + 239 + 239 + 139 + 939 + 039 + 139 + 839 + 739 + 639 + 339 + 939 + 939 + 239 + 539 + 639 + 539 + 039 + 939 + 539 + 539 + 939 + 739 + 939 + 739 + 339 + 939 + 739 + 139 + 539 + 239 + 239 + 439 + 039 + 139


One-Sided Issue

Posted in Science & Math by Greg Ross on June 6th, 2007

http://commons.wikimedia.org/wiki/File:Recycle001.svg

The international symbol for recycling depicts a Möbius strip.


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