You know who never has a shortage of work? Skylight repair man in Gotham City.
- Dan Moren (@dmoren) December 10, 2013

I totally wanted to reply to this, but there isn't enough space in 140 characters ( Read more... )

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Poll Gravity in Space

Does anyone have a source for cow stickers? Amazon seems to only have third party vendors, and the best I could find on Oriental Trading were mixed barnyard animals. I want cows. Only cows.

I'm looking for a wiki that allows entering and editing complex math formulae (like Mediawiki, I don't care if it's WYSWYG or LaTeX-like), but hosted on their servers (like PBWorks) for an online Physics course that I'm developing for the Spring. My goal is to have the students collaboratively write their own outlines and study sheets.

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The Large Hadron Collidor goes online today! This is as exciting as the day Hubble opened its shutters May 20 1990 ( Read more... )

If you've already beaten Magic Pen and loved it, then you have to give Fantastic Contraption a shot. It's another cartoon physics game, this one based on wheels and levels.

In case anyone's interested, I thought I'd post some answers to the quiz questions I posted the other day asking people for help in timing online quizzes ( Read more... )

It is worth noting that for all vehicles that travel on wheels (such as cars and bicycles), the sum of rolling resistance and static friction is what causes the vehicle to slow when the brakes are applied. The actual force applied in braking (for example, clamps applied to disk brakes) is internal, and by Newton's First Law cannot cause a change in ( Read more... )

It's a spherical cow!


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