Month: May 2014

Dark Energy, Faster-Than-Light Travel, and Fine Structure Bombs

Figure from my relativity book showing how FTL violates causality.

Last week’s talks were using sci-fi space travel as a hook to talk about relativity, and my original idea for the talk was to explain how faster-than-light travel ultimately ends up violating causality. Some observers will see effects happening before the events that cause them, and that’s just weird. In How to Teach Relativity to… Continue reading Dark Energy, Faster-Than-Light Travel, and Fine Structure Bombs

Cosmos, Just-So Stories, and Hindsight

I have a couple of things in the mental queue for this week, but I’m still playing catch-up from my trip to Texas, so instead you get a really quick comment on last night’s Cosmos. This one was all about the history of the Earth– continents moving, climate changing, mass extinctions– stuff that I know… Continue reading Cosmos, Just-So Stories, and Hindsight

Space Travel, Einstein, and GPS

Slide from my talk at Space Center Houston.

Below you’ll find the slides from my Physics Day presentations at Space Center Houston, embedded via SlideShare. I was doing the TED-style minimal text thing, so they’re probably not all that comprehensible on their own. The event was supposed to have a pop-culture connection, so I decided to use space travel and extrasolar planets as… Continue reading Space Travel, Einstein, and GPS

Cover for Eureka! Discovering Your Inner Scientist

Cover for the book-in-progress.

My Thursday presentation here in Houston went well, though it was a pretty small crowd. I’ll be doing it again today before running to the airport to get home. I didn’t really have an opportunity to do shameless self-promotion regarding the new book, but I did get a copy of the official cover for it,… Continue reading Cover for Eureka! Discovering Your Inner Scientist

Trespassing on Einstein’s Lawn by Amanda Gefter

One of the pop-physics books I’ve read recently was Amanda Gefter’s much-discussed Trespassing on Einstein’s Lawn. I was going to post a review of it back in March, but literally the day I was planning to write it, I got email from an editor at Physics Today asking if I had any books I’d like… Continue reading Trespassing on Einstein’s Lawn by Amanda Gefter