Quantcast

Latest Michael Chapman Stories

Quantum Inverted Pendulum
2013-08-28 08:18:43

Georgia Institute of Technology A simple pendulum has two equilibrium points: hanging in the "down" position and perfectly inverted in the "up" position. While the "down" position is a stable equilibrium, the inverted position is definitely not stable. Any infinitesimal deviation from perfectly inverted is enough to cause the pendulum to eventually swing down. It has been known for more than 100 years, though, that an inverted pendulum can be stabilized by vibrating the pivot point....

One More Victory Scored Over Uncertainty In Quantum Physics Measurements
2012-02-27 05:56:47

Squeezing what hasn't been squeezed before Most people attempt to reduce the little uncertainties of life by carrying umbrellas on cloudy days, purchasing automobile insurance or hiring inspectors to evaluate homes they might consider purchasing. For scientists, reducing uncertainty is a no less important goal, though in the weird realm of quantum physics, the term has a more specific meaning. For scientists working in quantum physics, the Heisenberg Uncertainty Principle says that...

2008-12-05 19:39:17

Demand for taxpayer funded in-vitro fertilization among women over 40 in Australia has doubled in recent years, officials said. The Sydney Daily Telegraph reported Friday that the number of women over 40 wishing to conceive has more than doubled government payments to IVF programs to $42.6 million in the last four years. Michael Chapman from IVF Australia said the rate of successful pregnancy for women over 45 is appalling, the newspaper said. We as doctors present the facts, and the facts...


Word of the Day
malpais
  • The ragged surface of a lava-flow.
'Malpais' translates from Spanish as 'bad land.'