A proton is a positively charged subatomic particle found in the nuclei of atoms. The number of protons in an atomic nucleus defines what type of atom it is. For example, a carbon atom has 12 protons in the nucleus, and a silver atom has 47 protons.
ARTICLES ABOUT PROTONS
There is more than one way to turn an antisocial particle into one that hangs out with the crowd. At temperatures just above absolute zero, matter can behave in many bizarre ways. Scientists at the University of Colorado and the National Institute...
February 3, 2004, Tuesday
ANTICIPATING continued growth of the biotechnology industry in Westchester, New York-Presbyterian Hospital is planning to begin construction next spring on a 384,000-square-foot treatment and research center on its 214-acre campus here. The $265...
November 23, 2003, Sunday
Flap harder, urged the little girl with the stopwatch. One by one, the children stepped up and launched themselves off the garden wall, flapping homemade wings with their arms. Always with the same result.
September 30, 2003, Tuesday
Experiments at the Brookhaven National Laboratory have created the hottest, densest matter ever observed, recreating conditions a fraction of a second after the birth of the universe, scientists announced today. The ultradense matter will help...
June 19, 2003, Thursday
To the Editor: ''It's a Ball. No, It's a Pretzel. Must Be a Proton'' (May 6) reminds me of a saying from grad school days: ''A model is an equation you can (almost) solve; no more, no less.'' JERRY GLUCK Seattle
May 20, 2003, Tuesday
Ask four physicists a seemingly simple question -- Is a proton round? -- and these might be their responses: Yes. No.
May 6, 2003, Tuesday
PHYSICISTS working at Brookhaven National Laboratory on Long Island believe they have discovered a previously unknown particle, which they call an exotic meson. The discovery of the new particle was reported yesterday in the journal Physical...
September 2, 1997, Tuesday
SOME good news for particle physicists came from Geneva on Friday, when the 19 member nations of the European Laboratory for Particle Physics decided to speed completion of the world's most powerful accelerator by three years. The accelerator,...
December 24, 1996, Tuesday
HAVING vainly sought supporting evidence for more than a decade, most physicists have abandoned a once popular theory that the proton, a fundamental building block of atoms, spontaneously disintegrates. But a new analysis of the problem suggests that...
September 29, 1992, Tuesday
LEAD: THE first machine designed to aim high-energy protons at deeply embedded cancers is finally being built - 42 years after Dr. Robert Wilson first cited the advantages of such therapy.