Pop Quiz Answer

Yesterday’s Michelson Interferometer quiz was surprisingly popular– as of 8:30 pm Tuesday (when I’m writing this), just under 1500 people have voted in the poll, three and a half times as many as in the next most popular poll I’ve done. Who says there’s no audience for physics? So, what’s the right answer, you ask?

links for 2009-07-15

funny-pictures-cat-upsets-your-gravity.jpg (JPEG Image, 500×398 pixels) Finally, the problem with quantum gravity is revealed. (tags: pictures silly animals internet physics gravity quantum) Robert Wright: Why the "New Atheists" are Right-Wing on Foreign Policy "It must strike progressive atheists as a stroke of bad luck that Christopher Hitchens, leading atheist spokesperson, happens to have hawkish views on… Continue reading links for 2009-07-15

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Pop Quiz: Michelson Interferometer

Inspired by one of yesterday’s easy questions, a pop quiz for you. The figure below shows a Michelson Interferometer: A laser falls on a beamsplitter, which allows half of the light to pass straight through, and reflects the other half downward. Each of those beams then hits a mirror that reflects it directly back where… Continue reading Pop Quiz: Michelson Interferometer

links for 2009-07-14

Confessions of a Community College Dean: College Prep "In some circles, ‘college’ is an undifferentiated term for a place that other people go to get the kinds of jobs that other people get. It’s probably some kind of racket, though the exact workings are hard to detail. In some circles, ‘college’ is a place to… Continue reading links for 2009-07-14

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