How fast is gravity?

Gravity is the most familiar of the known forces, but it seems to be eternal and unchanging. However, scientists believe that gravity moves with a specific speed. In this video, Don Lincoln describes a fascinating observation that definitively measures the speed of gravity.

How cold can it get?

Cryogenics is the science of cold. But how cold is cold? In this video, Fermilab scientist Don Lincoln tells us about some of the most amazing achievements in cryogenic science. And there is no truth to the rumor that he sings at the end.

Pound for pound, of all the particles with mass, neutrinos are the fastest, almost traveling at the speed of light … but not quite. So exactly how fast are they? Neutrino physicist Kirsty Duffy and Durham University neutrino theorist Jessica Turner discuss how fast the elusive neutrinos can travel.

Falling into a black hole is a science fiction favorite. In this video, Don Lincoln tells you what it’s really like, telling the facts and dispelling fiction. (Hint: Avoid it if at all possible.)

Among the most interesting astronomical bodies is the black hole; but it’s also one of the most misunderstood. In this video, Don Lincoln debunks some common misconceptions about black holes and also explains some important truths.

The Deep Underground Neutrino Experiment is an international experiment to unlock the mysteries of neutrinos. DUNE will be installed in the Long-Baseline Neutrino Facility, under construction in the United States. One mile underground, at the Sanford Underground Research Facility in South Dakota, the excavation of the large LBNF caverns for the DUNE far detectors is in full swing. When complete, the LBNF underground facility will cover an area about the size of eight soccer fields.

Dark matter is invisible; it’s everywhere; and it doesn’t interact with matter very often. The same is true for neutrinos. So are neutrinos dark matter? Neutrino physicist Kirsty Duffy and neutrino/dark matter researcher Asher Kaboth (Royal Holloway, University of London) break down the most likely dark matter candidates and where neutrinos fit into the mix.

Using Newtonian physics, physicists have found an expression for the value of kinetic energy, specifically KE = ½ m v^2. Einstein came up with a very different expression, specifically KE = (gamma – 1) m c^2. In this video, Don Lincoln shows how these two equations are the same at low energy and how you get from one to the other.

On July 4, 2012, researchers at the CERN laboratory in Europe announced the discovery of the Higgs boson. It was a tremendous triumph for the Standard Model of particle physics and confirmed a prediction made nearly half a century prior. In 2022, we celebrate the 10th anniversary of that momentous discovery.