1. plays: 1,089

    The Universe is Weird, Hank Green 

    (Thanks to socalreaper for the suggestion)

     
  2. 09:23 7th Apr 2014

    notes: 5894

    reblogged from: sagansense

    tags: Star Trekphysics

    (Source: nyotasinthesky)

     
  3. 13:15 30th Mar 2014

    notes: 1386

    reblogged from: naydoh

    tags: illustrationcatphysics

    image: download

     
  4. 10:00 28th Mar 2014

    notes: 379

    reblogged from: rhamphotheca

    tags: physicsBig Bang

    rhamphotheca:

    ENORMOUSLY IMPORTANT FINDING IN PHYSICS:

    First glimpse of big bang ripples from universe’s birth

    Important evidence found for Big Bang

    by Lisa Grossman

    Waves in the very fabric of the cosmos are allowing us to peer further back in time than anyone thought possible, showing us what was happening in the first slivers of a second after the big bang. If confirmed, the discovery of these primordial waves will have rippling effects throughout science. It backs up key predictions for how the universe began and operates, and offers a glimmer of hope for tying together two foundational theories of modern physics. It might even net the discoverers a Nobel prize.

    The waves in question are called gravitational waves and are produced when a massive object accelerates through the fabric of space-time, causing ripples. They appear in Einstein’s highly successful theory of general relativity, although they have never been directly detected.

    Today [March 17], scientists working with the BICEP2 collaboration at the south pole announced the first clear sign of gravitational waves, found in maps of the earliest light emitted after the big bang. The distinctive swirls made by the waves are more pronounced than the team expected, because models had suggested that gravitational waves from this early era would be incredibly weak and perhaps even undetectable…

    (read more: New Scientist)

    more stories:

    Science News/AAAS

    Popular Science

    New Scientist

     
  5. Nearly a century ago, Albert Einstein suggested that time should move faster the farther away you are from the surface of the Earth. Now scientists have tested this theory at the small distances we travel up and down every day. Using the world’s most precise clocks, they confirmed that our wristwatches tick at a slightly different speed when we ride an elevator, climb a flight of stairs, or even sit upright in bed.

    […]
    This optical atomic clock uses lasers tuned to the vibrations of a single atom of aluminum, which wobbles more than a quadrillion times per second (a quadrillion is a 1 followed by 15 zeros). It keeps time to within a second for 3.7 billion years.

    Searching for time dilation, Chou and his colleagues put the clock on a table and raised the table by a foot. After a long observation, they found that the time on the raised clock was slightly ahead of the time on a second clock kept below.

    "The difference at a foot of height over 100 years would be about 100 nanoseconds, said Chou. "That’s about a hundred billionths of a second."

    Time, then, does not flow at a constant rate in our daily lives.

    "These small differences would have been undetectable for the previous generation of atomic clocks," said Chou, who published the results in the journal Science.

    All other things being equal, living upstairs causes you to age slightly faster than living downstairs. And even with both feet planted firmly on the ground, parts of your body at different heights will age differently.

    foxnews, 2010

     
  6. 09:38 6th Mar 2014

    notes: 110

    reblogged from: foundfilm

    tags: videoanimationphysics

    Why Do I Study Physics?

     
  7. 10:20 28th Jan 2014

    notes: 174

    reblogged from: m1k3y

    tags: black holephysicsStephen Hawking

    The absence of event horizons mean that there are no black holes — in the sense of regimes from which light can’t escape to infinity. There are however apparent horizons which persist for a period of time. This suggests that black holes should be redefined as metastable bound states of the gravitational field.
    — 

    Stephen Hawking declares: ‘There are no black holes’ | Technically Incorrect - CNET News

    Please update your space lexicons pronto. Black Holes, to be filed next to Pluto is a Planet.

    (via m1k3y)

     
  8. 14:00 8th Jan 2014

    notes: 422

    reblogged from: kodfodrasz

    tags: physics

    image: download

    kodfodrasz:

mysciencelife:

Im now really curious to know what this means If theres anyone who knows what it means please please tell me im dyin here

This is the time dependent Scrödinger equation. The details are tl;dr;

    kodfodrasz:

    mysciencelife:

    Im now really curious to know what this means
    If theres anyone who knows what it means please please tell me im dyin here

    This is the time dependent Scrödinger equation. The details are tl;dr;

     
  9. futurist-foresight:

    The sound of the Big Bang as simulated by physicists John Cramer.

    spaceplasma:

    ▲  A 100-second recording of the sound of the Big Bang, created by University of Washington physicist John Cramer.

    Here’s What the Big Bang Sounded Like

    In the beginning, there was a righteous bass.

    So says physicist John Cramer, who has not only found evidence of the sound created during the Big Bang, but has also created a simulation of the low, deep noise emitted as the universe came into being.

    After the Big Bang, the universe expanded so rapidly that matter itself resonated to create a deep bass noise, and sound waves themselves became stretched and warped. “As the early universe expanded, sound waves propagated through the dense medium that closed back on itself, so that the hypersphere of the universe rang like a bell,” Cramer, a professor of physics at the University of Washington, explained.

    The effect would have been similar to that of a magnitude-9 earthquake that caused the entire planet to actually ring, Cramer said. However, in this case, the ringing covered the entire universe.

    That sound is long gone, of course, but it left its imprint on the cosmic microwave background, which is a thermal echo of the energy released during the Big Bang.

    In 2003, NASA’s Wilkinson Microwave Anisotropy Probe (WMAP) satellite gave scientists an unprecedented picture of the cosmic microwave background. In an article for science-fiction magazine Analog Science Fiction and Fact, Cramer wrote how this thermal data could be extrapolated into wavelengths of sound.

    In other words, the universe’s cosmic microwave background is kind of like a recording of the Big Bang’s phat beat.

    Two years after Cramer published his findings, the mother of an 11-year-old elementary school student wrote to Cramer, asking if there was an actual recording of the sound that her son could use for his school science-fair project. Cramer responded that there wasn’t — but there could be.

    To recreate the Big Bang’s sound, Cramer converted WMAP’s wavelength data into sound using a computational program called Mathematica.

    The resulting sound is low, creaky, and almost unassuming.

    Recently, more precise data from the European Space Agency’s Planck telescope has allowed Cramer to create an even more accurate sound profile, which he has exported as audio files. The files are, of course, a simulation: the true sound is so deep that Cramer had to boost the frequency 100 septillion times to put it within the range of human hearing.

    The sounds are available on Cramer’s website at the University of Washington. So remixers, have at it!

     
    • January 4: Britain’s first hand transplantation operation is successfully conducted.
    • January 9: A gamma secretase inhibitor previously experimented for treating Alzheimer’s disease is found to have regenerative effects on inner ear hair cells, potentially allowing for the effective treatment of deafness
    • January 10: Half of all food is wasted worldwide, according to a new report by the British Institution of Mechanical Engineers (IME)
    • January 23: Scientists encode large amounts of digital information, including the complete sonnets of William Shakespeare, on a single strand of synthetic DNA. DNA has immense potential as a storage medium, and may become commercially available for this purpose in the near future.
    • March 14: CERN scientists confirm, with a very high degree of certainty, that a new particle identified by the Large Hadron Collider in July 2012 is the long-sought Higgs boson
    • March 29: The Neanderthal genome is sequenced by German scientists from a toe bone found in southern Siberia.
    • May 22: Researchers at Purdue University in West Lafayette, Indiana, report that Earth is pushing the Moon away more quickly than it has done for most of the past 50 million years
    • July 16:NASA’s Curiosity rover reaches a milestone in its journey across Mars, having travelled 1 kilometre (0.62 mi) since its landing in 2012
    • November 17: Researchers have made the first battery electrode that heals itself, repairing imperfections within a few hours.

    and a lot more…