links for 2009-04-28

• Common Sense for Uncommon Physics | Cosmic Variance
  Tricks to get 'a feeling' for very large or small quantities. I learned from this post that light travels a foot per nanosecond (12 million miles a minute, according to Monty Python) and that
  "the sensitivity of the human eye is such that it can see a match flame from a mile away"
  and …
  "an ultra-high-energy cosmic ray has about the same energy as a good fastball."
  (tags: physics)

Filed under: Quick links

The Pi-day effect…

on the pageviews of Qulog:

A few days before 14 March lots of people searching for random facts on pi and pi songs find Qulog… and when Pi day is gone, they’re all gone too.

Filed under: Qulogistics

Cube in crochet

As a follow-up on my earlier post with pictures of a yellow crocheted bead and cube (which at some point got quite some visitors from a knitting and crochet group on yahoo, if I remember well) I present you another cube in crochet.

This time with pictures of the making-of! Let me know if you made one yourself.

Filed under: Crochet, English, Hands-on math & science

links for 2009-04-12

• Screencasts maken zonder software te installeren | Antoine van Dinter: Frans & ICT
  Dit klinkt handig: online een screencast maken (een filmpje van je beeldscherm).
  (tags: web screencast software)

Filed under: Quick links