### Bookmarks for December 25th from 00:00 to 00:51

#### by danhon

This is an auto-posted collection of public links I’ve either posted to, or favourites from Twitter, my Instapaper bookmarks and my public links posted to Pinboard.in for December 25th from 00:00 to 00:51:

- russell (@russelldavies) on Twitter – The usual Xmas amenities to you all!
- The most beautiful theory – “ALFRED, it’s spinning.” Roy Kerr, a New Zealand-born physicist in his late 20s, had, for half an hour, been chain-smoking his way through some fiendish…
- Holographic principle – Wikipedia, the free encyclopedia – The is a property of string theories and a supposed property of quantum gravity that states that the description of a volume of space can be thought of as…
- Minkowski space – Wikipedia, the free encyclopedia – In mathematical physics, or Minkowski spacetime is a combination of Euclidean space and time into a four-dimensional manifold where the spacetime interval…
- Conformal field theory – Wikipedia, the free encyclopedia – A (CFT) is a quantum field theory that is invariant under conformal transformations. In two dimensions, there is an infinite-dimensional algebra of local…
- AdS/CFT correspondence – Wikipedia, the free encyclopedia – In theoretical physics, the anti-de Sitter/conformal field theory correspondence, sometimes called Maldacena duality or gauge/gravity duality, is a conjectured…
- Quantum gravity – Wikipedia, the free encyclopedia – (QG) is a field of theoretical physics that seeks to describe the force of gravity according to the principles of quantum mechanics.

The current understanding… - Hierarchy problem – Wikipedia, the free encyclopedia – In theoretical physics, the is the large discrepancy between aspects of the weak force and gravity.[1] There is no scientific consensus on why, for example, the…
- Right Now, You’re Breathing A Potentially Dangerous Substance – Sam Kaplan

Air

The air man needs a fresh hit. It’s a beautiful summer morning. Dew shines on the grass. Birds chirp. What a glorious day to contemplate the air.… - Dave Barry’s 2015 Year in Review – Was 2015 the worst year ever? Yes, yes it was.

By Dave Barry

Sometimes we are accused — believe it or not — of being overly negative in our annual Year in… - This Is Your Brain on Nature – Within sight of downtown Seoul, capital of South Korea and a hub of stressful modern life, salesman Sungvin Hong rests after a hike in Bukhansan National Park.…
- Medicine’s Burning Question – Several years ago, I fell at the gym and ripped two tendons in my wrist. The pain was excruciating, and within minutes my hand had swollen grotesquely and…
- The Most Notable Medical Findings of 2015 – The New Yorker – Every week, I peruse around fifteen journals, some featuring basic science, others clinical research and patient cases, and still others a mix. As a specialist…