Read article: Table-top synchrotron defies convention Stars and solar physics Research update Table-top synchrotron defies convention A controversial new type of radio transmitter could transform communications
Constants and units Research update Negative refraction goes acoustic Sounds waves follow light waves into materials with novel properties
Gravity Research update Accelerating universe will limit technology Cosmological considerations will place universal limits on computation
Constants and units Research update New look for the Doppler effect Physicists have demonstrated the inverse Doppler effect
Metrology Research update Silicon joins race to redefine the kilogram A new measurement of the Avogadro constant could allow the unit of mass to be defined in terms of atomic and fundamental constants
Constants and units Research update The height of frequency standards Atomic clocks confront geophysics in experiments to measure time
Read article: The Casimir effect: a force from nothing Surfaces and interfaces Feature The Casimir effect: a force from nothing The force could affect everything from micromachines to unified theories of nature
Constants and units Research update When constants are not constant In the movie The Meaning of Life, the Monty Python team reminds us that we live in “an amazing and expanding universe”. Ever since the startling evidence for cosmic expansion was discovere...
Structure and dynamics Research update Friction riddle is cracked Scientists reveal the atomic origin of the familiar phenomenon
Constants and units Research update When is a constant not a constant? A fluctuating fine structure constant could cast doubt on many physical models