Reuben

Author's details

Name: Reuben Gann
Date registered: 11/30/-0001

Latest posts

  1. An illuminating trip to the Microsoft store — 12/29/2013
  2. Netflix streaming continues to founder as dozens of prominent movies are taken down — 12/28/2013
  3. Saints Row IV is the most fun I've had playing a game — 11/19/2013
  4. Statisticians need to see how experimental science really works, then shut up about it — 11/13/2013
  5. Surface Pro 2: first impressions — 10/24/2013

Author's posts listings

Feb 23 2013

Sudoku: more basics

Categories:

Sudoku

by

SudokuHarder1

It's possible to solve a Gentle Sudoku with only a box-by-box search technique. While this is the first technique I will normally apply, it is not the only one necessary to solve most Gentle puzzles. Sudoku has 3 rules: every 3x3 highlighted box must have 1-9, every row must have 1-9, and every column must …

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Feb 22 2013

Thermo for Normals (part 30): Complicated things

Categories:

Thermo for Normals

by

All cars have to keep themselves cool. The reason for this, as we've seen, is the inefficiency of the engine: you can't convert the heat, made in the burning of gasoline, into work without creating some waste heat. If we take the energy stored in gasoline to be the "free energy" of the chemical bonds, …

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Feb 18 2013

Sudoku: the basics

Categories:

Sudoku

by

SudokuBasic1

Those of us who think we'll live a long time (not me) have a couple near certain conditions to look forward to. For men, it's prostate cancer. But for either gender, it's dementia. Puzzles ward off dementia. I'm not all that good at puzzles. Over the years I've done crosswords, but they require a bit …

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Feb 06 2013

Thermo for Normals (part 29): Radiation, continued

Categories:

Science, Thermo for Normals

by

er

Now we know the amount of radiation coming from an object with a surface at temperature . And we know the amount for each frequency of light. It's where is frequency you're interested in, is the speed of light, and is a property of the object called emissivity. Emissivity measures the fraction of white light …

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Feb 01 2013

New American Cancer Society report

Categories:

Science

by

Males

The American Cancer Society just published their 2013 Facts and Figures report. It's kind of interesting to look at the time dependence of the rates. First for men: Since 1990, the rate of lung (mostly smoking induced) cancer has been falling, presumably due to the government's concerted effort to force people to stop---absent any other …

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