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Your search has returned 41 articles:
  • Feature

    Past SN Quantum coverage

    The Light Game. The Science News-Letter. May 12, 1928, p. 294. “Ray O. Light” summarizes the particle-wave dispute over the nature of reality as if it were a football game.

    “Uncertainty Principle” Enters Science. The Science News-Letter. April 27, 1929, p. 257. An introduction to Werner Heisenberg’s uncertainty principle.

    Einstein Finds Past Events Not Knowable with...

    11/05/2010 - 17:03
  • Feature

    75 years of entanglement

    Though it has been confirmed numerous times since 1935, entanglement is as spooky as ever.

    1935: Physicists Albert Einstein, Boris Podolsky and Nathan Rosen publish a paper in Physical Review asking “Can quantum-mechanical description of physical reality be considered complete?” Their answer: no.

    The same year, in the journal Naturwissenschaften, Erwin Schrödinger coins the...

    11/05/2010 - 17:02
  • Feature

    Quantum weirdness

    Quantum weirdness

    Some key concepts in quantum mechanics lead to rather startling results. In the quantum world, objects can be in two states at once and the outcomes of experiments can change depending on when, how and how often scientists make their measurements.

    Double-slit experiment An electron can be either a wave or a particle depending on the design of the experiment....

    11/05/2010 - 17:02
  • Feature

    Like fate of cat, quantum debate is still unresolved

    In the tapestry of 20th century physics, virtually every major thread is entangled with the name of Albert Einstein. He was most famous for the theory of relativity, of course, which rewrote Newton’s laws and set modern theoretical cosmology in motion. But Einstein also played a major role in the origins of quantum theory and in perceiving its weird implications — including entanglement, a...

    11/05/2010 - 17:01 Quantum Physics
  • Feature

    Everyday Entanglement

    If the Manning brothers were quantum physicists as well as NFL quarterbacks, one of them could win his game’s opening coin toss every time. The night before they played, the brothers would take two coins from a special quantum box to use the next day. If Peyton’s game came first, after learning the outcome of his coin toss, he would know without a doubt how his brother’s coin would land. Say...

    11/05/2010 - 17:01 Quantum Physics
  • Feature

    Clash of the Quantum Titans

    Schrödinger’s cat was born 75 years ago. Its date of death remains uncertain. Science’s most famous feline remains perpetually both alive and dead, a mythological zombie symbolizing an enduring enigma at the heart of modern physics.

    It’s an imaginary cat, of course, invented by Austrian physicist Erwin Schrödinger in 1935 to emphasize the weirdness of quantum...

    11/05/2010 - 17:00 Quantum Physics
  • News

    Fossil fangs not so fierce

    Anomalocaris, that fearsome predator of ancient seas, may have to return its title. A new analysis suggests that the monstrous shrimplike creature, which lived more than 500 million years ago, couldn’t handle crunchy food.

    Researchers modeled the stresses that Anomalocaris jaws would have undergone while feeding on snacks as hard as lobster tails. The team found that eating hard-shelled...

    11/05/2010 - 15:37 Earth & Environment
  • Reviews & Previews

    Book Review: The Many Worlds of Hugh Everett III: Multiple Universes, Mutual Assured Destruction, and the Meltdown of a Nuclear Family by Peter Byrne

    In histories of quantum physics, Hugh Everett III’s name appears frequently, but without much about the life of the man behind the name. He did not pursue a career in academic physics, opting instead to work as an analyst for secret military projects, and he died young, in 1982 at age 51.

    In Everett’s 1957 Ph.D. dissertation, he introduced a radical view of quantum...

    11/05/2010 - 13:33
  • Science Future

    Science Future for November 20, 2010

    November 20 New York’s American Museum of Natural History opens its interactive brain exhibit. Go to www.amnh.org/exhibitions/brain

    December 2 San Francisco’s Exploratorium considers sugar, from its bodily functions to art. With cocktails. See www.exploratorium.edu

    December 2–3 Howard Hughes Medical Institute airs live classroom webcasts on infectious diseases....

    11/05/2010 - 10:53
  • Science Past from the issue of November 19, 1960

    MERCURY CAPSULE FAILS — Failure of the test shot of the Mercury space capsule and its pilot escape system will not “necessarily” delay putting a man in space, the National Aeronautics and Space Administration reported. NASA has scheduled a manned rocket launch for 1961. The Mercury spacecraft, designed to take an astronaut safely into outer space and return him to earth, failed to...

    11/05/2010 - 10:52