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26 posts tagged with physics and space. (View popular tags)
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conservation of information

A Black Hole Mystery Wrapped in a Firewall Paradox - "A paradox around matter leaking from black holes puts into question various scientific axioms: Either information can be lost; Einstein's principle of equivalence is wrong; or quantum field theory needs fixing." [more inside]
posted by kliuless on Aug 18, 2013 - 36 comments

"Ring it Out"

Last fall, the Canadian Space Agency asked students to design a simple science experiment that could be performed in space, using items already available aboard the International Space Station. Today, Commander Chris Hadfield conducted the winner for its designers: two tenth grade students, Kendra Lemke and Meredith Faulkner, in a live feed to their school in Fall River, Nova Scotia. And now, we finally have an answer to the age-old question, What Happens When You Wring Out A Washcloth In Space? [more inside]
posted by zarq on Apr 18, 2013 - 63 comments

There is always a last time for everything

Is Science Fiction promoting pseuodoscience? Is it not really better than fantasy? Is it exhausted and dying, per Paul Kincaid (part 1, part 2), a sort of genre-writing version of completing a list of The Nine Billion Names of God? Does physics-bothering unrepentant space case Alistair Reynolds have a compass pointing the way forwards?
posted by Artw on Dec 19, 2012 - 84 comments

Flipping cat physics

The physics of how cats flip their bodies to land feet first also allows spacecraft to turn. Flipping cats [previously] is interesting. It's even more interesting if your dad works at NASA and you have access to people who use flipping-cat physics to make spacecraft turn in space.
posted by milkb0at on Aug 26, 2012 - 28 comments

"Because I'm in space, and I can, I get to name these yo-yo tricks."

NASA Astronaut Don Pettit uses his off-duty time to practice his microgravity yo-yo skills.
posted by OverlappingElvis on Aug 11, 2012 - 39 comments

Physics Demos that are Out of this World

Science off the Sphere is a video series by Don Pettit aboard the ISS showing off the neat things you can do in zero-gravity. [more inside]
posted by quin on May 31, 2012 - 13 comments

Measuring the Universe

The Royal Observatory, Greenwich has put together the fantastic short video Measuring the Universe which briefly describes the different techniques used to allow us to calculate the vast distances to stellar objects in space. [via]
posted by quin on May 30, 2012 - 11 comments

A snack of classical mechanics

What is the Dzhanibekov effect? Known as the Tennis Racket theorem in English and documented by Vladimir Dzhanibekov in 1985 space, it is the result of unstable rotation about a principle axis.
posted by Algebra on Apr 6, 2012 - 21 comments

Is the Earth getting lighter?

Is the Earth getting lighter? BBC Radio's More or Less ("the mathematical icing on the cake of life") talks to some of the Naked Scientists from Cambridge about whether the Earth is gaining or losing mass, revealing some surprising and interesting facts.
posted by philipy on Jan 31, 2012 - 12 comments

Fabric of the Cosmos

Brian Greene's Fabric of the Cosmos is online in its entirety on NOVA's website, in four one-hour episodes. Time, Space, Quantum Mechanics, Multiverses.
posted by empath on Nov 26, 2011 - 32 comments

SciGuy Eric Berger

One of my favorite blogs happens to be local to me. Eric Berger, the Houston Chronicle's "SciGuy" usually reports on the weather. But he also posts entertaining and serious stuff as well. [more inside]
posted by PapaLobo on Nov 22, 2011 - 3 comments

Space Station Reboost

Physics! (SLYT via)
posted by curious nu on Nov 10, 2011 - 38 comments

This view of time does not look encouraging for time travelers

The concept of time as a way to measure the duration of events is not only deeply intuitive, it also plays an important role in our mathematical descriptions of physical systems. For instance, we define an object’s speed as its displacement per a given time. But some researchers theorize that this Newtonian idea of time as an absolute quantity that flows on its own, along with the idea that time is the fourth dimension of spacetime, are incorrect. They propose to replace these concepts of time with a view that corresponds more accurately to the physical world: time as a measure of the numerical order of change.
posted by finite on Apr 25, 2011 - 127 comments

Earth tide

"The Earth tide is a little-known daily event, similar to the oceans' more familiar tides. But the sun and moon's gravity doesn’t just pull on water, it deforms the Earth itself, causing the ground beneath us to bulge toward the pulling heavenly body." [more inside]
posted by Paragon on Mar 10, 2011 - 12 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

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

The Spherical Wave Structure of Matter in Space

On Truth and Reality. Despite several thousand years of failure to correctly understand physical reality (hence the current postmodern view that this is impossible) it is actually very simple to work out how matter exists and moves about in Space. The rules of Science (Occam's Razor / Simplicity) and Metaphysics (Dynamic Unity of Reality) require that reality be described from only one single source existing, as Leibniz wrote: "because of the interconnection of all things with one another." [more inside]
posted by netbros on Jan 30, 2009 - 46 comments

I Didn't Know That

Science Hack is a unique search engine for science videos focusing on Physics, Chemistry, and Space. For example, things to do with sulfur hexafluoride. Still growing, the editors are presently indexing other scientific fields of study including Geology, Psychology, Robotics and Computers. Ever wonder why things go bang?
posted by netbros on Aug 7, 2008 - 6 comments

Warp Drive

Putting the Warp into Warp Drive.
posted by homunculus on Jul 28, 2008 - 60 comments

Universe Sandbox

An Interactive Space Simulator "Smash planets together, introduce rogue stars, and build new worlds from spinning discs of debris. Fire a moon into a planet or destroy everything you've created with a super massive black hole. You can simulate and interact with our solar system: the 8 planets,160+ moons, and hundereds of asteroids, the nearest 1000 stars to our Sun, and our local group of galaxies." [31Mb, Windows only, sorry, but see inside for similar Mac and Linux apps] [more inside]
posted by stavrosthewonderchicken on Jul 11, 2008 - 27 comments

Imagining the Tenth Dimension

Imagining the Tenth Dimension (Flash). 10th dimensional physics and string theory don't get any easier than this.
posted by Jimbob on Jul 4, 2006 - 76 comments

Learning can be fun.

Science sites of all kinds for kids. Archeology. Entomology. Natural Symphony. Baseball in Space. Philosophy. Process or Content. Science songs. Physics songs, relativity. String theory. Science and Art.
posted by nickyskye on Jun 26, 2006 - 9 comments

Function Follows Form in Quantum Mechanics and Astronomy. The need for a NEW Black Hole.

Function Follows Form in Quantum Mechanics and Astronomy. The need for a NEW Black Hole. A Weblog.
posted by nthdegx on Apr 14, 2006 - 22 comments

Make the Kessel run in less than twelve par-secs!

Hyperdrive and a possible Unified Theory. New Scientist article about a paper and proposal to NASA outlining development parameters and possiblities for a faster-than-light anti-gravity propulsion system, based on some rather interesting physics theories originated by a guy named Heim. You mean you've never heard of the Millenium Falcon? (via)
posted by zoogleplex on Jan 9, 2006 - 70 comments

Italo Calvino's Cosmicomics

"I was willing to bet that there was going to be a universe, and I hit the nail on the head." The other day we had Avram Davidson, which got me thinking of Calvino's Invisible Cities, but all the recent talk about black holes made me remember that Italo Calvino is at his most charming when he's playing with physics, math, and cosmology in Cosmicomics.
posted by vraxoin on Nov 20, 2002 - 15 comments

A computer aided simulation builds a spiral galaxy from its beginning. In all, 390,000 particles were placed in an arrangement similar to a newborn galaxy. The end result after three months is an event that is believed to take billions of years to occur. (animation)
posted by samsara on Aug 7, 2002 - 7 comments

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