Join 3,561 readers in helping fund MetaFilter (Hide)

582 posts tagged with physics. (View popular tags)
Displaying 201 through 250 of 582. Subscribe:

Related tags:
+ (236)
+ (49)
+ (38)
+ (33)
+ (33)
+ (29)
+ (29)
+ (28)
+ (27)
+ (27)
+ (26)
+ (24)
+ (22)
+ (20)
+ (19)
+ (17)
+ (17)
+ (17)
+ (17)
+ (16)
+ (16)
+ (15)
+ (14)
+ (14)
+ (14)
+ (14)
+ (14)
+ (13)
+ (13)
+ (12)
+ (12)
+ (12)
+ (12)
+ (11)
+ (11)
+ (11)
+ (10)
+ (10)
+ (10)
+ (9)
+ (9)
+ (9)
+ (9)
+ (8)
+ (8)
+ (8)
+ (8)
+ (7)
+ (7)
+ (7)
+ (7)
+ (7)
+ (7)
+ (7)
+ (7)
+ (7)
+ (7)
+ (7)
+ (7)
+ (6)


Users that often use this tag:
kliuless (23)
homunculus (13)
zarq (11)
Gyan (11)
loquacious (8)
empath (8)
Blazecock Pileon (7)
Artw (7)
Wolfdog (7)
DU (7)
jjray (6)
netbros (5)
ozomatli (5)
escabeche (5)
AElfwine Evenstar (5)
sergeant sandwich (4)
lazaruslong (4)
Bora Horza Gobuchul (4)
Blasdelb (4)
Jimbob (3)
thatwhichfalls (3)
plep (3)
vacapinta (3)
OmieWise (3)
brundlefly (3)
Brandon Blatcher (3)
BlackLeotardFront (3)
jeffburdges (3)
MetaMonkey (3)
fearfulsymmetry (3)
Rhaomi (3)
ocherdraco (3)
cthuljew (3)
sweetkid (2)
cross_impact (2)
GuyZero (2)
justkevin (2)
Eideteker (2)
darkstar (2)
goodnewsfortheinsane (2)
grapefruitmoon (2)
zardoz (2)
tellurian (2)
blahblahblah (2)
leibniz (2)
odinsdream (2)
knave (2)
gramschmidt (2)
ikkyu2 (2)
ZenMasterThis (2)
mcgraw (2)
monju_bosatsu (2)
srboisvert (2)
Espoo2 (2)
stuporJIX (2)
Mitheral (2)
Kattullus (2)
Pretty_Generic (2)
quin (2)
ptermit (2)

Physics from Hell

It's possible that Galileo arrived at basic laws of physics by studying Dante's Inferno. In 1588, Galileo gave two lectures questioning the scalability of Dante's Hell. A paper questions its importance.
posted by twoleftfeet on Jan 16, 2011 - 24 comments

I Can Has Gravity?

Weightless Cats and other fun experiments. An excerpt from from coverage of research at the Aerospace Medical Division Hq 657Oth Aerospace Medical Research Laboratories including scenes of F-104 seat ejection; drop tests from C-130 and ejection from F-106; effects of weightlessness on cats and pigeons in a C-131; test subjects in water tank, on centrifuge, in heat chamber and on complex coordinator. Also, scenes of vertical deceleration tower, incline impact test facility, vertical accelerator, equilibrium chair and vibration platform. More videos can be found at Airboyd.tv: Accident Animations, Aviation Films, Military Flight Training Films, and Space Shuttle Vidoes.
posted by Fizz on Jan 15, 2011 - 32 comments

Women of the Royal Society and elsewhere

The Royal Society's lost women scientists. Women published in the Royal Society, 1890-1930. Most influential British women in the history of science. Women at the Royal Observatory Greenwich. Heroines of Science. Women Biochemists, 1906-1939. Women in Science. Previously: The Women of ENIAC.
posted by mediareport on Jan 12, 2011 - 9 comments

Energy=Mass of City squared

A Physicist Solves the City [more inside]
posted by Ndwright on Dec 24, 2010 - 37 comments

How does the Large Hadron Collider Work?

A good video animating the different stages of the LHC. (SLYT)
posted by bodywithoutorgans on Dec 8, 2010 - 12 comments

riverrun, past Eve and Adam's, from swerve of shore to bend of bay, brings us by a commodius vicus of recirculation back to Howth Castle and Environs.

to talk about the concept of "time" before the big bang; the Cyclic Universe Theory proposes an alternative to the predominant Inflation Theory that led to this intuition. Now Gurzadyan and Penrose have observed low-variance rings in the CMB, supporting the notion that it makes sense
posted by jjray on Nov 27, 2010 - 41 comments

Sir, we have a antimatter containment breach on deck 10!!!

Antimatter atoms produced and trapped at CERN [more inside]
posted by AElfwine Evenstar on Nov 18, 2010 - 125 comments

Snail Ball

The Geometry of the Snail Ball [pdf] - an interesting article (with some DIY advice at the end) about a toy shop curiosity you may have encountered.
posted by Wolfdog on Nov 16, 2010 - 25 comments

The problem of powering paradise

Professor Brian Cox: "If there were an afterlife I would have to reconsider the engineering design of fridges with a very critical eye" The field of cessation thermodynamics considers how the hereafter might be powered - probably without 21 grams of human soul - and whether this may mean hell will freeze over. [more inside]
posted by rongorongo on Nov 15, 2010 - 19 comments

The Circular Jump is a White Hole

Circular jumps (previously) form when you turn on your tap and the water lands in a thin circular disk with a raised lip. Jannes et al have now shown that circular jumps are examples of hydrodynamic white holes: waves can escape the jump, but not enter it. [more inside]
posted by jjray on Nov 13, 2010 - 19 comments

That darn cat!

Scientists have finally discovered tyhe physics of how cats drink.
posted by Daddy-O on Nov 12, 2010 - 51 comments

And it's going, going, GONE!

The Longest Home Run Ever
posted by zarq on Nov 5, 2010 - 41 comments

Fucking electromagnetism: How does it work?

Physicist responds to Troll Physics.
posted by emilyd22222 on Oct 26, 2010 - 59 comments

Calculating the Madness of People

Unpopular Science: One man's unhappy encounters with the laws of physics.
posted by spiderskull on Oct 25, 2010 - 7 comments

from complexity, universality

A brief tour of the mysteriously universal laws of mathematics and nature. [more inside]
posted by kliuless on Oct 24, 2010 - 33 comments

The Future of Fundamental Physics

Renowned theoretical physicist Nima Arkani-Hamed gave a series of five Messenger lectures on "The Future of Fundamental Physics" at Cornell University two weeks ago. 1 3 4 5 [more inside]
posted by bread-eater on Oct 20, 2010 - 15 comments

(?:Ig)? Nobel Laureate

Andre Geim has earned many awards from his peers for groundbreaking research in physics, but he's arguably only won the attention of the general public a couple times: First for levitating a frog, and then for discovering 2D atomic crystals. For these efforts he has become the first person to be a laureate of both the Ig Nobel Prize and Nobel Prize.
posted by ardgedee on Oct 5, 2010 - 12 comments

What would happen if you put your hand in the Large Hadron Collider.

Several physicists weigh in on what would happen if you were to place your hand in the proton stream of the Large Hadron Collider at CERN. There's not a definite answer...the responses range from "nothing" to "you'd die for sure, instantly". [more inside]
posted by albrecht on Oct 1, 2010 - 53 comments

Dance the microtubule tango

While working on a PhD, did you ever feel no one understood your research? Well instead of writing your dissertation about your topic, ““Microtubule Catastrophe in Living Cells” or “Hydrodynamic Trail Following in a Harbor Seal (Phoca vitulina)”, you can dance to it. Or, if you don’t want to dance to a science topic, then change your topic and publish research about zombies as a disease model. [more inside]
posted by Wolfster on Sep 29, 2010 - 3 comments

Hello

(over-simplified) Anatomy of a Typical Phone Conversation
posted by ocha-no-mizu on Sep 29, 2010 - 19 comments

danyk's Electromagnetic Shenanigans

(MLYT) Danyk666 and his microwave oven, danyk and his unshielded Source, danyk's little jacob's ladder, danyk heats water, zaps a CD, uses wrong AC power. Also hairspray high-volt abuse, his flyback transformer no workee (wait for it), carbon scoring on your droids? And danyk's small shaded-pole motor ...OF DEATH!!! [more inside]
posted by billb on Aug 25, 2010 - 35 comments

The Fate of the Universe

Fate of Universe revealed by galactic lens [spoiler alert] [more inside]
posted by Joe Beese on Aug 20, 2010 - 45 comments

Does the Past Still Exist?

Is our present defined by decisions we make in the future? And maybe we don't know who killed JFK because the universe hasn't decided yet. A Huffington Post science blogger discusses the nature of history from a quantum perspective. To quote Stephen Hawking, "The histories of the universe depend on what is being measured, contrary to the usual idea that the universe has an objective observer-independent history." [more inside]
posted by GnomeChompsky on Aug 20, 2010 - 95 comments

That Was the This Week's Finds That Was

The 300th issue of This Week's Finds in Mathematical Physics will be the last. It is not an exaggeration to say that when John Baez started publishing TWF in 1993, he invented the science blog, and an (academic) generation has now grown up reading his thoughts on higher category theory, zeta functions, quantum gravity, crazy pictures of roots of polynomials, science fiction, and everything else that can loosely be called either "mathematical" or "physics." Baez continues to blog actively at n-category cafe and the associated nLab (an intriguingly fermented commune of mathematicians, physicists, and philosophers.) He is now starting a new blog, Azimuth, "centered around the theme of what scientists can do to help save the planet."
posted by escabeche on Aug 14, 2010 - 17 comments

It's the end of space-time as we know it, and I feel fine.

Those wacky New Scientists are reporting on a "new challenge" to part of Einstein's theory of special relativity that changes the relationship of Space to Time. No, this has nothing to do with Conservapedia's laughable challenge to the theory*. Petr Hořava** won't replace Einstein*** in scientific importance in this new Century, but maybe Hendrik Lorentz whose theories on symmetry apparently take a beating****. Remember kiddies, Science (especially Physics) doesn't have Absolute Truths, it just keeps getting closer to them. And even ol' Albert E. can and WILL be improved upon. [more inside]
posted by oneswellfoop on Aug 10, 2010 - 37 comments

Position-based quantum cryptography theoretically proved

Our results open a fascinating new direction for position-based security in cryptography where security of protocols is solely based on the laws of physics and proofs of security do not require any pre-existing infrastructure.
posted by Joe Beese on Aug 8, 2010 - 47 comments

What the pangeaists don't want you to know

Don't continue fooling yourself. The earth is growing and expanding rapidly. Despite plate tectonics' popular acceptance in the 60s, Samuel Warren Carey, the father of modern expansion tectonics, was publicly promoting his theories of an expanded earth as late as 1981. One of the theory's most prominent modern spokesmen is comics artist Neal Adams, who has created a number of informative videos about a new model of the universe that even manages to explain why the dinosaurs died out. [more inside]
posted by Lorc on Aug 7, 2010 - 77 comments

If these pants could talk

Small amounts of sound can now be harvested by this special fabric to produce very small amounts of current. And what if there was a clever, logic-defying way to possibly greatly enhance the conversion capabilities of such piezoelectric materials? Then maybe I'll get that "Power Suit" I always wanted.
posted by cross_impact on Jul 22, 2010 - 18 comments

Shooting rabbits takes on a whole new meaning

A video of a bunch of CG physics demonstrations that can be interacted with in real time.
posted by cthuljew on Jul 20, 2010 - 32 comments

Gravity is Optional

Physicist Erik Verlinde proposed in a recent paper that the force of gravity can be derived from the principles of thermodynamics. NY Times explains. [Physicist Lee] Smolin called it, “very interesting and also very incomplete.”
posted by jjray on Jul 12, 2010 - 55 comments

Physics of Phootball

Free during the World Cup the IOP (Institute of Physics) has a collection of papers all about football (soccer). Also related is NASA's recent findings regarding the randomness of the new Adidas ball.
posted by ozomatli on Jul 6, 2010 - 8 comments

What the Earth knows

Experts are little help in the constant struggle in this conversation to separate myth from reality, because they have the same difficulty, and routinely demonstrate it by talking past each other. Respected scientists warn of imminent energy shortages as geologic fuel supplies run out. Wall Street executives dismiss their predictions as myths and call for more drilling. Environmentalists describe the destruction to the earth from burning coal, oil, and natural gas. Economists ignore them and describe the danger to the earth of failing to burn coal, oil, and natural gas. Geology researchers report fresh findings about what the earth was like millions of years ago. Creationist researchers report fresh findings that the earth didn’t exist millions of years ago. The only way not to get lost in this awful swamp is to review the basics and decide for yourself what you believe and what you don’t. [more inside]
posted by infinite intimation on Jun 27, 2010 - 31 comments

The Brooklyn Project

Inspired by a talk by Dr. Robert W. Bussard, Mark Suppes, a web developer by day, has built his own nuclear fusion reactor. [more inside]
posted by fearfulsymmetry on Jun 24, 2010 - 23 comments

Academic Snarkives

arXiv vs snarXiv. "A ran­dom high-energy the­ory paper gen­er­a­tor incor­po­rat­ing all the lat­est trends, entropic rea­son­ing, and excit­ing mod­uli spaces". [more inside]
posted by a womble is an active kind of sloth on Jun 4, 2010 - 50 comments

Up a bit, down a bit, over a bit ...

Sprocket Rocket is a physics game whose goal is to collect sprockets to unlock argumentations to your egg shaped rocket ship (and school you about IP law but you can ignore that part). [more inside]
posted by Mitheral on May 31, 2010 - 41 comments

Yarchive - Notes from the hinterland.

Yarchive is one man's collection of UseNET posts on the topics of Air Conditioning; Aircraft; Bicycles; Cars; Chemistry; Computers; Electrical, Electronic; Environment; Explosives, Pyrotechnics; Food; Houses; Guns; Jokes; Medicine; Metalworking; Military; Nuclear; Telephones; Physics; Risks; Security; Space mostly from a select group of authors. It has been updated several times since it first appeared here in 2001 and it never fails to sucker me in for hours every time I stumble upon it from a Google Search. [more inside]
posted by Mitheral on May 19, 2010 - 37 comments

This chronological wang-dang-doodle could destroy the very matrix of reality.

The Physics of Futurama David X Cohen, producer of Futurama, explains how there's actual, legitimate physics in the show, why not.
posted by shmegegge on May 16, 2010 - 56 comments

The quantum mechanics of the waggle dance.

Mathematician Barbara Shipman speculates that a honey bee's sense of the quantum world could be as important to their perception of the world as sight, sound or smell: "the mathematics implies that bees are doing something with quarks."
posted by jardinier on May 7, 2010 - 46 comments

Economics and Physics Envy

"Take a little bad psychology, add a dash of bad philosophy and ethics, and liberal quantities of bad logic, and any economist can prove that the demand curve for a commodity is negatively inclined." MIT economist Andrew Lo and string theorist turned asset manager Mark Mueller on the "physics envy" that plagues economics, and how to stop worrying and love uncertainty.
posted by escabeche on Apr 1, 2010 - 37 comments

spacetime must organise itself in a way that maximises entropy

Gravity from Quantum Information
At the heart of their idea is the tricky question of what happens to information when it enters a black hole. Physicists have puzzled over this for decades with little consensus. But one thing they agree on is Landauer's principle: that erasing a bit of quantum information always increases the entropy of the Universe by a certain small amount and requires a specific amount of energy. (via mr)
posted by kliuless on Apr 1, 2010 - 33 comments

Tell me why this doesn't work

The physics of Mothra
posted by elephantday on Mar 29, 2010 - 28 comments

Quantum weirdness at the large scale

Scientists supersize quantum mechanics. "A team of scientists has succeeded in putting an object large enough to be visible to the naked eye into a mixed quantum state of moving and not moving."
posted by homunculus on Mar 18, 2010 - 73 comments

Tiny & Big

Tiny & Big. Help Tiny recover his grandfather's magical underpants of teleportation stolen by the nefarious Big. A demo for a 3D physics puzzler involving a cutting laser and grappling hook. Youtube preview. Available for OSX (10.5), Windows, & Linux (32bit, 64bit).
posted by juv3nal on Mar 12, 2010 - 18 comments

there are many types of balls

Blosics 2 is a physics game. Throw blocks off the stage by shooting balls at them. There are many types of blocks, there are many types of balls. 30 levels to finish. (flash, music/sound effects optional) [more inside]
posted by crunchland on Mar 9, 2010 - 26 comments

Constants & Variables

Caltech physicist Sean Carroll recently tweeted that he was meeting up with Lost producers Damon Lindelof and Carlton Cuse. This was posted to the forums at Lostpedia, prompting immediate spoiler complaints ... so Carroll signs up and drops in to the thread to clear up the confusion, also offering some of his thoughts on the use of time travel in the show and referencing a longer blog post he wrote shortly before the start of the final season.
posted by mannequito on Mar 3, 2010 - 75 comments

10^27 = HELLA BIG

Northern California physics student proposes hella as new SI prefix.
posted by cgc373 on Mar 2, 2010 - 68 comments

Life, the Universe and Everything -- explained

The Perimeter Institute is a center for theoretical physics in Waterloo, Canada. Among other outreach activities, they host a series of public lectures on a variety of physics related topics. [more inside]
posted by empath on Feb 26, 2010 - 11 comments

Phriday Physics

Physics shorts: odd & weird
posted by DU on Feb 26, 2010 - 15 comments

Left Hand Doesn't know what the Right Hand is Doing

Many thought the secrets of the universe would be revealed by the LHC in Switzerland, but the lower powered Brookhaven Collider briefly violated the laws of physics recently.
posted by ExitPursuedByBear on Feb 16, 2010 - 74 comments

Roger Penrose is looking more credible

Quantum processes involved in photosynthesis? "[A]lgae and bacteria may have been performing quantum calculations at life-friendly temperatures for billions of years. The evidence comes from a study of how energy travels across the light-harvesting molecules involved in photosynthesis. The work has culminated this week in the extraordinary announcement that these molecules in a marine alga may exploit quantum processes at room temperature to transfer energy without loss. Physicists had previously ruled out quantum processes, arguing that they could not persist for long enough at such temperatures to achieve anything useful." (via mr)
posted by kliuless on Feb 10, 2010 - 43 comments

Page: 1 2 3 4 5 6 7 8 ... 12