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Showing results 21-31 of 105 for 'Physics'

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    Ants in the Lead

    As the old song says, ""oops, there goes another rubber tree plant."" People have always been in awe of ants' ability to work together to get the seemingly impossible done – but how, exactly, do they do it? Now we know, thanks to a Weizmann team that created a physics-based model showing how groups of ants cooperate to carry large pieces of food to the nest.

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    Science Tips, July 2014

    Three updates from the labs of the Weizmann Institute: with interferons, even the negative may be necessary when it comes to HIV; mutations harmful to fertility are different in men and women; tiny magnets point to a fundamental principle of particle physics.

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    A Multiple-Impact Origin for the Moon

    While the predominant theory for the Moon's existence was a single, massive impact with Earth, our satellite's origins were still mysterious. Now, complex computer simulations by Prof. Oded Aharonson show that the more likely explanation is multiple impacts of varying sizes that produced many moonlets; over time, these joined to form the Moon we know today.|

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    Weather on the Outer Planets Only Goes So Deep

    Since the ‘80s, when Voyager II discovered extremely high atmospheric winds on Uranus and Neptune, the vertical extent of those winds has been a scientific puzzle. Now, a team led by Weizmann's Dr. Yohai Kaspi has found a way, based on a novel method for analyzing gravitational fields, to determine an upper limit for the atmospheric layer's thickness.

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    Blowing in the (Stellar) Wind

    It is theorized that massive stars have lighter elements on the outside, heavier ones at the core, and that there must be a layer where these meet – and where, possibly, nitrogen is formed. Taking measurements just 15 hours after a star exploded in a supernova, astrophysicists found nitrogen – and shed new light on the origins of the universe.

  • Science Tips, January 2009

    Three research updates from the Weizmann Institute: the benefit of a uterine biopsy; creating functional nerve networks in the lab; and revealing how cancer cells survive chemotherapy. 

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