Archive for the 'Physics' Category

“The good news is the void is there.”

Thursday, November 2nd, 2017

NPR The Two-Way: Scientists Say They’ve Found Hidden Space In Great Pyramid Of Giza.

“Tayoubi explains that his team installed sheets of muon-detecting film in a lower-level room of the pyramid known as the Queen’s Chamber. The goal was to test whether they could use muons to accurately discern two well-known rooms located above: the King’s Chamber and Grand Gallery.

They saw those rooms but, to their surprise, they found an additional large space as well.”

Deutsche Welle: Hohlraum in Cheops-Pyramide entdeckt. “Seit zwei Jahren durchleuchten internationale Forscherteams mit Strahlungsdetektoren die Cheops-Pyramide. Jetzt feierten sie den Durchbruch: Sie entdeckten einen riesigen Hohlraum in der größten Pyramide in Gizeh.”

“I was appalled by the number of people affected by lead contamination in water.”

Friday, October 20th, 2017

NPR the two-way: Troubled By Flint Water Crisis, 11-Year-Old Girl Invents Lead-Detecting Device.

“Gitanjali Rao, 11, says she was appalled by the drinking water crisis in Flint, Mich. — so she designed a device to test for lead faster. She was named “America’s Top Young Scientist” on Tuesday at the 3M Innovation Center in St. Paul, Minn.”

“Some 130 million years ago, when dinosaurs roamed Earth, two dead stars in a far-away galaxy collided violently…”

Wednesday, October 18th, 2017

NRP Science: A New Era For Astronomy Has Begun.

“Astronomy will never be the same again. We will be able to watch extremely violent processes on the fly, and watch them in many different ways, as they run their course. […] That so many astronomers could each catch a piece of the story and then work together to patch it together is a magnificent achievement.

Everytime a new tool or technique made its way into astronomy, amazing new discoveries followed. We are now watching the skies with unprecedented precision and breadth, combining all wavelengths of light with gravitational waves.

If history is a guide, we can expect untold surprises as we dramatically amplify our grasp on physical reality. Stay tuned and enjoy the show.”

When adding a third filter lets through MORE light

Monday, October 16th, 2017

3Blue1Brown with minutephysics: Some light quantum mechanics. “This is a simple primer for how the math of quantum mechanics, specifically in the context of polarized light, relates to the math of classical waves, specifically classical electromagnetic waves.”

minutephysics with 3Blue1Brown: Bell’s Theorem: The Quantum Venn Diagram Paradox. “This video is about Bell’s Theorem, one of the most fascinating results in 20th century physics. Even though Albert Einstein (together with collaborators in the EPR Paradox paper) wanted to show that quantum mechanics must be incomplete because it was nonlocal (he didn’t like “spooky action at a distance”), John Bell managed to prove that any local real hidden variable theory would have to satisfy certain simple statistical properties that quantum mechanical experiments (and the theory that describes them) violate. Since then, GHZ and others have managed to extend the theoretical work, and Alain Aspect performed the first Bell test experiment in the late 1980s.”

Physik mit dem Handy

Friday, September 29th, 2017

PhyPhox: Your smartphone is a mobile lab. (Gibt’s auch in deutscher Sprache.) This app was created at RWTH Aachen and is available for free for Android and iOS. You can download it here. They also have a YouTube channel with demo videos in English and German.