Researchers at Caltech, working with French colleagues, have figured out a mechanical means to weigh the previously un-weigh-able--things like individual molecules, viruses, proteins, and other particles--at the individual level, one by one.
So it turns out that Einstein may not have been wrong about the universal speed limit. Not only is special relativity safe, it provides an explanation for those faster-than-light neutrinos. They’re not breaking the light-speed barrier; they just appear to be, thanks to the relativistic motion of the clocks checking their speed.
A pair of magnetic liquid drops oscillating in opposite directions can function as a liquid piston, and could one day be used to deliver drugs, power mobile phone cameras or even serve as implantable eye lenses, according to a new study.
Physicists working with a Fermilab neutrino experiment may have found a new elementary particle whose behavior breaks the known laws of physics. If correct, their results poke holes in the accepted Standard Model of particles and forces, and raise some interesting questions for the Large Hadron Collider and Tevatron experiments. The new particle could even explain the existence of dark matter.
Is everything in the universe made up of vibrating one-dimensional strings? For the first time, scientists think they can concretely test string theory, the mind-blowing “theory of everything” that has dominated physics for the past two decades. It turns out that string theory predicts the behavior of entangled quantum particles, which can be tested in a lab — therefore testing string theory.
Scientists trying to explain the universe’s accelerating expansion usually point to dark energy, which seems to be pushing everything apart.
But an Indiana University professor has a new theory, reports New Scientist: We’re inside a black hole that exists in another universe. Specifically, a black hole that rebounded, somewhat like a spring.
Learn how to destroy expensive glassware with the power of sound
By Adam WeinerPosted 07.08.2008 at 10:52 am 1 Comment
A few weeks back we looked at the phenomenon of resonance with oscillating metronomes. As a follow-up to that meditative and Zen-like video, we've included a crystal-clear demonstration of that favorite old opera singer's trick: shattering a wine glass with resonance.
Metronomes generally keep their own beat -- that's why we love them -- but when several get together, a compromise is hammered out
By Adam WeinerPosted 06.24.2008 at 10:50 am 1 Comment
This charming little video demonstrates the principle of resonant frequency using oscillating metronomes. The mechanical wind-up metronomes used worldwide during the dreaded Saturday piano lesson employ an inverted pendulum to keep even time intervals. The resonant frequency of the pendulum is adjusted by moving the mass up and down. Sliding the mass higher up the rod decreases the resonant frequency of the pendulum by increasing its rotational inertia.