Physics - Browse Physics

161.

Focus

Landmarks: The First Million-Volt Accelerator

Phys. Rev. Focus 13, 17 (2004) – Published April 20, 2004

In 1932, the invention of the cyclotron marked the start of modern particle physics.

162.

Focus

How the Proton Got its Spin

Phys. Rev. Focus 12, 5 (2003) – Published August 8, 2003

Mathematically-derived pictures show the structure of quarks inside a proton.

163.

Focus

Supernovae that Don’t Explode

Phys. Rev. Focus 11, 30 (2003) – Published June 27, 2003

A supernova simulated using state-of-the-art equations doesn’t explode, exposing astrophysicists’ ignorance about neutrino physics.

164.

Focus

Detecting Dark Dimensions

Phys. Rev. Focus 10, 21 (2002) – Published November 1, 2002

Dark matter arising from extra spatial dimensions could be detected with existing or future experiments.

165.

Focus

Nobel Focus: Neutrino and X-ray Vision

Phys. Rev. Focus 10, 18 (2002) – Published October 16, 2002

The 2002 Nobel Prize in Physics went to three experimentalists who opened the window on cosmic neutrinos and x rays.

166.

Focus

Casting a Strange Glow

Phys. Rev. Focus 10, 13 (2002) – Published September 20, 2002

Bare quark stars may give off a unique signal that could soon be detected.

167.

Focus

Galaxies Help Weigh Neutrinos

Phys. Rev. Focus 10, 2 (2002) – Published July 12, 2002

The clustering of galaxies in space places the tightest bound yet on the mass of the wispy neutrino.

168.

Focus

Black Holes from Heaven

Phys. Rev. Focus 9, 3 (2002) – Published January 11, 2002

High energy cosmic rays might produce tiny black holes that could be detected in the next several years.

169.

Focus

Signs of the Quark-Gluon Plasma?

Phys. Rev. Focus 8, 34 (2001) – Published December 21, 2001

Researchers have seen the first indicator of an exotic state of matter but can’t yet confirm its presence.

170.

Focus

Straddling a Speeding Proton

Phys. Rev. Focus 8, 19 (2001) – Published October 5, 2001

An accelerating proton collides with particles that don’t exist in the stationary observer’s world.

171.

Focus

Ozone Layer Burned by Cosmic Rays

Phys. Rev. Focus 8, 8 (2001) – Published August 2, 2001

Cosmic rays may be enlarging the ozone hole.

172.

Focus

Neutrinos Reveal Star’s Inner Secrets

Phys. Rev. Focus 7, 26 (2001) – Published June 1, 2001

Neutrino observatories may be able to detect exotic matter in proto-neutron stars or witness the births of black holes.

173.

Focus

Neutrino Models Aren’t Separable

Phys. Rev. Focus 6, 4 (2000) – Published August 2, 2000

New calculations show that two models for solar neutrinos are not really as distinct as most researchers had thought.

174.

Focus

No WIMPs in Sight

Phys. Rev. Focus 5, 28 (2000) – Published June 20, 2000

WIMPs, particles that may solve the dark matter mystery, have still not been detected by the most sensitive search yet.

175.

Focus

An Insect Trap for Electrons

Phys. Rev. Focus 5, 17 (2000) – Published April 21, 2000

A new technique for combining a free electron and a positively charged ion might help physicists unite positrons with antiprotons to make neutral antimatter.

176.

Focus

Cosmic Ray Puzzle Solved?

Phys. Rev. Focus 5, 16 (2000) – Published April 13, 2000

New estimates of extragalactic magnetic fields may resolve the long-standing mystery regarding the sources of the highest energy cosmic rays.

177.

Focus

A Universal Asymmetry

Phys. Rev. Focus 4, 1 (1999) – Published July 7, 1999

Physicists at Fermilab have precisely measured a new aspect of the asymmetry in the laws of physics known as CP violation.

178.

Focus

Neutrinos Have Mass

Phys. Rev. Focus 2, 10 (1998) – Published September 1, 1998

179.

Focus

Update on the Top Quark

Phys. Rev. Focus 1, 2 (1998) – Published March 16, 1998

Two Fermilab teams have improved their measurement of the mass of the top quark.