Search and Discovery
Porous microparticles suspended in a reagent solution can make the transition to synchronous activity in two ways—one gradual, the other sudden.
Issues and Events
Agencies are planning to quickly spend their shares of recovery monies; further budget increases are provided in omnibus spending bill.
An updated electric grid will be more reliable and secure, but some warn that investments should await industry standards.
For a time, Wheeler regarded nuclear physics as the best way to “do battle with nature.” But then he became attracted to the simplicity of the muon, which is immune to the strong nuclear force. He himself, however, could not escape the ramifications of that force in a world at war.
On a morning walk across the snowy Princeton campus early in 1939, Niels Bohr suddenly understood that the rare isotope uranium-235 was alone responsible for the recently discovered nuclear fission.
From the mid-1950s on, John Wheeler’s “radical conservative-ism” allowed him to explore without fear crazy-sounding ideas that often led to profound physical insights.
The phenomenon discovered more than 100 years ago by Edwin Hall is now used to generate thrust for unmanned spacecraft in our solar system. In time, Hall effect thrusters might propel manned spacecraft to nearby planets.