Clearing stuff up for the […] I have a BA in physics from Williams College and a Ph.D. in Chemical Physics from the University of Maryland, College Park (studying laser cooling at the National Institute of Standards and Technology in the lab of Bill Phillips, who shared the 1997 Nobel in Physics). The Heisenberg Uncertainty Principle states that you can never simultaneously know the exact position and the exact speed of an object. To use Pip-scale numbers, if I go out biking at 5mph relative to the ground, on a day when the wind is blowing at 1omph, when I bike downwind I effectively have a 5mph wind at my back (the 10mph wind reduced by my 5mph in the same direction), which as noted above feels pretty negligible.

(Photo by Ezra Shaw/Getty Images for AEG) The peak times for Twitter engagement, at least for Americans like me, are during the hours when I’m feeding the kids, getting them to bed, and going to sleep myself. It’s just hard to find time to blog.A secondary reason is that writing blog posts had started to feel more like an obligation than something I enjoyed doing. Psychologically, that feels like the wind is no help at all when it’s with you, but a huge drag when it’s in your face.So, if you’re out riding a bike, and wondering why the stupid wind is always in your face, well, you have the physics of relative motion to blame.I'm an Associate Professor in the Department of Physics and Astronomy at Union College, and I write books about science for non-scientists.

Not because there’s an actual wind moving the air, but because you’re moving your face through the air. Natalia Fedosenko/TASS (Photo by Natalia Fedosenko\TASS via Getty Images) peloton during Stage 1 of the Amgen Tour of California Women's Race Empowered with SRAM on May 17, 2018 in Elk Grove, California. At least, it does if you’re moving a bit faster than The Pip usually does, thanks to air resistance forces.When you’re moving through the air (or the wind is blowing past you), you experience a force in the opposite direction, basically due to Newton’s Third Law (the one about actions having reactions): to move forward through the air, you need to shift the air immediately in front of you out of the way, so you push on it, and it in turn pushes back on you.ELK GROVE, CA - MAY 17: Emma White of the United States riding for Rally Cycling rides in the The resulting force depends on how much air you need to move out of the way, which is determined by the cross-sectional area you present to the air times the speed that you’re moving. Chad Orzel asked for a regional look at the COVID-19 death rate in the United States. And at some point, it just didn’t seem worth bothering to do that. Because everything in the universe behaves like both a particle and a wave at the same time. Between low-traffic suburban streets and the On one of these rides, he asked a question that at some point has occurred to everyone who’s ever gone out for a bike ride: “Why is the Of course, the real answer to the question is that it’s an illusion caused by one of the fundamental principles of physics, the idea of relativity. realclearscience.com — Chad Orzel, MIT Press Reader June 24, 2020 One of the most exciting physics stories of 2011 was the September announcement that an experiment in Italy had observed neutrinos traveling faster than the speed of light. I can do quickie news stories about recent results, but there are lots of other people who can do them just as well, and they probably enjoy it more than I do.Back in the more free-wheeling heyday of Scienceblogs, my value add was to do a really deep dive on the details of news-y papers in my field, digging into the technical details you won’t get from a Dennis Overbye or Kenneth Change. [Directed by Henrik Malmgren, narrated by Addison Anderson]. I'm an Associate Professor in the Department of Physics and Astronomy at Union College, and I … This largely reflects a change in the nature of blogging over the last umpteen years. Twitter 8/29/20 5:07 AM. While I do use Twitter, probably a bit too much, the synchronous aspect of it doesn’t really work for me. I have to pedal hard enough to match that force in order to keep moving, so it starts to be worthwhile to hunch over the handlebars so as to reduce the area.This is also why a headwind is so much more annoying than a tailwind is helpful. Everything about this axe speaks of the existence of prehistoric science.

My books _How to Teach Physics to Your Dog_ and _How to teach Relativity to Your Dog_ explain modern physics through imaginary conversations with my German Shepherd; _Eureka: Discovering Your Inner Scientist_ (Basic, 2014), explains how we use the process of science in everyday activities, and my latest, _Breakfast With Einstein: The Exotic Physics of Everyday Objects_ (BenBella 2018) explains how quantum phenomena manifest in the course of an ordinary morning. Posted on March 30, 2017 by Chad Orzel There was a kerfuffle in academic social media a bit earlier this week, kicked off by an anonymous Twitter feed dedicated to complaints about students (which I won’t link to, as it’s one of those stunt feeds that’s mostly an exercise in maximizing clicks by maximizing dickishness).

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