Hewitt-Drew-it! Ballistic Pendulum

Paul explains how the classic ballistic-pendulum problem cannot be solved with energy conservation alone.

Hewitt-Drew-it! PHYSICS 32. Ballistic Pendulum

Your Life in Pi

Nathan Shields, Washington's 2011 PAEMST awardee in mathematics, made a nice video explaining the consequences of the nature of the numerical value of pi. Take a look and be amazed!

Your Life in Pi

This past century of global warming? It ain't natural!

Climate science deniers trot out well-worn, discredited warhorses when anyone is willing to listen.

"Warming isn't happening!" "It's the sun!" "The warming (that isn't even happening) is just natural variation." Their meritless tactics mirror those employed by creationists so well that the National Center for Science Education now provides support for climate science education in addition to their work in evolution instruction.

In any case, today we learn that the rate of global temperature rise over the past century is unlike anything seen since the last Ice Age.

The research appears in the journal, Science. A nice summary appeared this morning on NPR.

Climate science deniers prefer to announce their "findings" (usually bloated misinterpretations of cherry-picked research) in such distinguished scientific journals as The Daily Mail, Forbes, Fox News, and The Wall Street Journal.

Can't connect to phyz.org?

Register.com's Premium (paid for) Web Site Forwarding usually works. But since it doesn't always work, I've changed the link in the "Sites, Pics, and Docs" section (to the right) to take you directly to my specific web page, currently http://marge.ragesw.com/~phyzorg.com/phyz/index.html.