See yesterday’s post for background. Here’s the question: In the helicopter activity, pairs of students design paper ”helicopters” and compete to create the copter that takes longest to reach the ground when dropped from a fixed height. The two parameters of the helicopter, a and b, correspond to the length of certain cuts in the […]
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Today we celebrate another Permutation Day! I call days like today permutation days because the digits of the day and month can be rearranged to form the year. This is the fourth permutation day of of 2014, and there’s one more on its way. Celebrate Permutation Day by mixing things up! Try doing things in a different order […]
...or at least ask a follow-up question.Maybe it's just me, but don't journalists have an obligation to object when sources say something blatantly, laughably untrue? If the subject of an interview has just insulted the intelligence of your readers, should you at least attempt to get a more truthful response?Andrew Cuomo has a new book out. To promote it he has a brief interview with Amy Chozick in the New York Times. I realize that this isn't a setting where you expect hard-hitting […]
Does light have weight? Newton thought so. His laws predicted that gravity would bend of light, two centuries before Einstein's revolution.
Does light have weight? Newton thought so. He supported the corpuscular theory of light, regarding it as comprised of particles with small but finite mass. He concluded
The #MTBoS is a wonderful place. Sometimes the only problem is deciding which awesome activity I will do, since I don’t have time to do them all! Luckily, I had a block day, so I was able to use two … Continue reading →