Microsoft Research has just released its
Project Tuva (click).What is the project? It brings you all seven Messenger Lectures that Richard Feynman gave at Cornell in 1964. Firefox or Internet Explorer are needed. Silverlight (Microsoft Flash Replacement) will install automatically if you don't have it yet: the evaluations of this system seem excellent so far.
The video player includes the complete lectures as subtitles and allows you to make notes, too. Relevant extra pictures, texts, and links appear on the right side and additional notes will be added in a few months.
In the introduction, Bill Gates says that he considers these lectures to be best ever. He has hoped to bring them to the public for 20 years. Now, two decades and 40 billion U.S. dollars later, he has realized his dream. :-)
The seven parts discuss
- Law of gravitation: an example of a physical law
(includes a funny provost's introduction)
- The relation of mathematics and physics
- The great conservation principles
(a clever mother, unlike most, counts the blocks)
- Symmetry in physical law
(includes special relativity)
- The distinction of past and future
- Probability and uncertainty: the quantum mechanical view of Nature
- Seeking new laws
Gates thinks that the cool Feynman lectures are just a tip of a future iceberg.
Thank you, Bill Gates!
Hat tip: Symmetry Magazine (via Facebook)
Bill Gates and hurricanes
Because it has already happened anyway, the comment section is open to people's voices about the new patent by Bill Gates et al. (see also Google News) to suppress hurricanes by pumping cold water from the depths of the oceans to the surface.
I would actually guess it is feasible but you may have done more careful calculations than my estimates.
Palaeocene-Eocene thermal maximum
55 million years ago, an unknown source added a lot of carbon to the atmosphere. At the same moment, the temperatures rose by 5-9 °C within a few millenia. Except that Zeebe, Zachos, and Dickens (Daily Tech, Google News) claim in Nature Geoscience that the greenhouse effect couldn't have been sufficient for this change, and most of the change had to be caused by another, so far unknown mechanism. The authors determine that the IPCC models can't work as believed by some scientists and the errors of the IPCC predictions are of order 100%.