Tag Archives: physics

Tycho

One of the most famous stories in astronomy surrounds the development of the Keplerian model of the planets. Kepler’s model (the one we use today) has three laws: Planets travel in an ellipse with the sun at one focus. This … Continue reading

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Why the F is not equal to ma

Those of you who know me will also know that I’m a big fan of crossword puzzles. Maybe it’s the rotational and reflection symmetry in American style crosswords, but I make a point to do all of the late-week puzzles. … Continue reading

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Ask a Physicist: What's so super about Supersymmetry?

Hey everyone, my “Ask a Physicist” column is officially back! This week, I talk all about supersymmetry. Would you like to leave an indelible mark on future generations? Well then, ask me a question! If it’s good and of general … Continue reading

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Why is the Higgs Mechanism so complicated?

Credit: Nature Physics I’ve done a fair amount of writing describing the discovery of the Higgs, why it’s important, and (a pet peeve of mine) why you should under no circumstances call it “The God Particle.” The Higgs is now … Continue reading

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They Found It!

Results from the CMS Experiment. Curve shows probability of a detection being found by chance. Results from the ATLAS Experiment. This isn’t going to be a long post, because I think you knew what was coming. Earlier this morning, both … Continue reading

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Ask a Physicist: Stop Calling it the "God Particle."

Today, in likely anticipation of tomorrow’s Higgs announcement, I hike up my pants high and demand that people stop referring to the Higgs as the “God Particle.” Also, to bring back MacGyver. In case you missed it: Stop Calling it … Continue reading

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Antworld, the Equivalence Principle, and GR

I’ve been thinking a lot about Special and General Relativity lately, and in particular, the Equivalence Principle — the main theme for Chapter 7 of my upcoming book on symmetry. In the process, I started playing around with a really … Continue reading

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A symmetry approach to time dilation

Howdy, folks. As you know, I’m in the midst of writing my book on symmetry, and every now and again, I like to try to run various drafts of different snippets of the manuscript by you, the peanut gallery, for … Continue reading

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I get mail: Twin Paradox Edition

Greetings, true believers! Apologies for the relative infrequency in posting, but as most of you know, I’ve been working hard on my upcoming book. I’m over the hump, and sent the first half to my editor a couple of weeks … Continue reading

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Some awesome stuff (that I didn't do)

We are just finishing up the Winter term here at Drexel. This term, I’ve been teaching an advanced undergraduate/graduate course in cosmology. One of my undergraduate students, Mary Chessey, wanted to do an additional honors elective. She developed a series … Continue reading

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