Swans on Tea

I’ve always wanted a huge double-pole, double-throw knife switch in the lab, because you can’t utter that phrase without it, but it’s probably a bad idea.
So you settle (just a little)

Because sometimes you just need to run a few hundred amps through something …

One thing about R & D is that the project eventually moves you from physics (the “R” part) over to something that’s more engineering in nature (the “D” part). Here’s a quick example. Here’s the laser system for the caesium fountain, which is a research device. It’s spread out to be optimized [...]

Who cares about gas mileage? This sucker warps time!
When relativity is discussed in popular literature it’s often couched in terms of affecting objects moving at a significant fraction of the speed of light, and that’s a true statement: kinematic time dilation cannot generally be ignored in that situation. But the implication that the [...]