Physics

Category archives for Physics

In 2011 Daniel Holz gave a Heinz R. Pagels Public Lecture at the Aspen Center for Physics on the topic of Gravitational Waves. The talk is one of the better explanations of what this is all about, with a bonus introduction!

LIGO: Useful Things

LIGO and allies have also provided a bunch of fun useful stuff: Have We Detected Gravitational Waves Yet? Stretch and Squash Black Hole Hunter Einstein@Home Gravitational Waves 101 – Markus Pössel’s excellent visualizations. The Data The Papers SXS – Simulating eXtreme Spacetimes visualizations The Chirp – courtesy of Georgia Tech GR group

LIGO explains

February 11th was a good day. I spent the day at the “Dynamics and accretion at the Galactic Center” Conference at the Aspen Center for Physics, where about 75 physicists have spent the week talking about black holes and stuff. This morning we watched the LIGO press conference, frantically deciphered the papers, and had a…

Busy Bee

Bee at Backreaction has been busy over the last few months, here is my backlog reading list: A Thousand Words Do we live in a computer simulation? Consciousness and Physics from Scratch 10 things I wish I had known 20 years ago Science changed my life and yours too Do we write too many papers?…

Wind and Snow

Found on Ground

The Physics Tree

Complex Systems #171

One of the joys of the holidays and the University turning off the heating and locking us out, is that it provides time to catch up on things: papers, refereeing, recommendation letters, grading, syllabi, proposals, all the stuff one can rarely get to during actual working semester hours. And, sometimes, there is time for real…

A research group at Lawrence Livermore National Laboratory has produced ultrastiff ultralowdensity metamaterials by 3D printing of microarchitected microlattices. This is very cool – they do additive 3D printing using microstereolithography with nanocoating and postprocessing and can make self-similar lattices with densities varying by several orders of magnitude in bulk density but near constant stiffness.…

Day two of the New Frontiers wrap-up conference. This is a slow liveblog with more cosmology and life in the universe. Yesterday’s summary is here A couple of years ago, the Templeton Foundation funded the New Frontiers program to pose “Big Questions” in some areas of science. This is a slow liveblog – part II…

A couple of years ago, the Templeton Foundation funded the New Frontiers program to pose “Big Questions” in some areas of science. This is a slow liveblog – part II will be tomorrow with more cosmology and life in the universe Seed funding was provided to 20 investigators and small groups to start exploratory research,…