All Stories by Peter Weiss
- Physics
Motor design flouts physical law
A proposed silicon device the size of a red blood cell would transform random thermal motion into useful mechanical power in violation of the second law of thermodynamics, its designers claim.
- Physics
Putting the brakes on antihydrogen
By mixing ultracold antiprotons and antielectrons, physicists have created the first atoms of antihydrogen that move at a leisurely enough pace for direct measurements of their properties.
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- Physics
Gravity gets measured to greater certainty
Important but imprecisely measured, the gravitational constant, G, is given its most exact experimental value yet, while a pioneering investigation into gravity finds that extra dimensions, if they do exist, occupy spaces of less than a couple tenths of a millimeter.
- Physics
Neptunium Nukes? Little-studied metal goes critical
Researchers have measured with far greater accuracy than ever before how much neptunium it would take to make a bomb.
- Physics
Magnetic snap gives ions extra pop
Magnetic fields pump heat into ions when field lines of opposite orientation snap and reconnect.
- Physics
Groovy ’70s sound keeps X rays tight
Cast aside as a way to reproduce music, LP phonograph records reveal another, unsuspected talent that scientists plan to exploit-focusing X rays.
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- Physics
Intergalactic magnetism runs deep and wide
Mounting evidence that magnetic fields of surprising strength permeate intergalactic space raises questions about how the fields form and what effects they have.
- Physics
Cooled device unveils a quantum limit
A novel suspended device chilled near absolute zero demonstrates the existence of a basic unit, or quantum, of heat conductance—the first evidence of quantum mechanics in mechanical structures.
- Humans
Flame Out: Fishy findings sustain, then snuff, stellar career
Investigators have concluded that a young, up-and-coming physicist repeatedly faked data and committed other types of scientific misconduct.
- Physics
Prize honors physicist with conscience
Physicist-author Freeman J. Dyson received the Templeton prize for originality in advancing religious understanding.
