Physics

Jerk

What is jerk? Jerk is to acceleration as acceleration is to velocity. And, acceleration is to velocity as velocity is to position. So let’s start there. The instantaneous velocity at which you travel tells you…

Submitted on 20 November 2017

Gravitational Waves, a New Observational Window on the Universe

Simulation of two merging black holes [image: SXS, the Simulating eXtreme Spacetimes (SXS) project]

Not that I am going to try, but it is difficult to underestimate the importance of the first detection of gravitational waves for physics. Apart from the fact that it is another gloriously successful test for general relativity, it actually opens up a new observational window on the universe…

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Submitted on 24 April 2016

The Greatest Physics Experiment Ever, Live in Your Browser

LHC dashboard when adjusting beams [image: CERN]

The Large Hadron Collider (LHC) must surely be the greatest physics experiment ever. Remarkably, you can follow the day-to-day operations of this experiment on the web, through the online dashboard. Have a look! The fascinating thing is that such a large machine is needed to study the smallest of things, elementary particles. The LHC is a particle collider that…

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Submitted on 18 April 2011