Very cool article about the physics of pitching.

Trackman charts rpms, spin rate on pitchers like David Robertson - Tom Verducci - SI.com

It's that time of the year!

Chapter 4 Section 5

Optical Instruments on Prezi

Optical Fibers on Prezi

Cool Bald Eagle cam

Visit the site to view archived video of an egg hatching!

  
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EXTRA CREDIT *Personality Test*

Seventh graders please go here and take the test.  Then post your name and personality type in the comments section below.  Worth 5 pts extra credit on the Chapter 4 Exam.

Optical transistor advance: Physicists rotate beams of light with semiconductor

Optical transistor advance: Physicists rotate beams of light with semiconductor

For 5 points extra credit (8th grade): summarize and respond to this article. Also, here's what we've coved in Ch. 4 so far.

Measurements of winter Arctic sea ice shows continuing ice loss, study finds

Measurements of winter Arctic sea ice shows continuing ice loss, study finds

Email me a short summary of the article and your response to it and receive 5 extra credit points on your next exam.