	Site Map \| FAQ in Daily Almanac for Nov 14, 2009 Search White Pages
Skip Navigation Home American Indian Heritage Month Atlas Encyclopedia Dictionary Thesaurus Features Quizzes Timelines Countries Slideshows

Fact Monster Kid's reference,
games, quizzes

Editor's Favorites

atomic mass unit

atomic mass unit or amu,in chemistry and physics, unit defined as exactly 1/12 the mass of an atom of carbon-12, the isotope of carbon with six protons and six neutrons in its nucleus. One amu is equal to approximately 1.66 × 10^-24 grams.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. All rights reserved.

More on atomic mass unit from Infoplease:

atomic mass unit: meaning and definitions - atomic mass unit: Definition and Pronunciation
Suggestions for spelling of encyclopedia/atomic mass unit - The Infoplease spelling checker combines spelling help with our dictionary and thesaurus
atomic weight - atomic weight atomic weight, mean (weighted average) of the masses of all the naturally occurring ...
atomic mass - atomic mass atomic mass, the mass of a single atom, usually expressed in atomic mass units (amu). ...
phosphorus - phosphorus phosphorus [Gr.,=light-bearing], nonmetallic chemical element; symbol P; at. no. 15; at. ...

See more Encyclopedia articles on: Chemistry: General

Premium Partner Content

HighBeam Research

Related content from HighBeam Research on: atomic mass unit

Units in mass spectrometry (Spectroscopy)

Search for variation of the fundamental constants in atomic, molecular, and nuclear spectra.(Report) (Canadian Journal of Physics)

FUSION IN TIME; ATOMIC TICKERS AND RETRO STYLING ARE PUTTING A NEW FACE ON CLOCKS. (HFN The Weekly Newspaper for the Home Furnishing Network)

The roar of an atomic canon.(Interview) (Current Events, a Weekly Reader publication)

Fast-switching valves for high-productivity ALD.(Atomic ayer deposition) (Semiconductor International)

Atomic faces peek through lead shroud.(scientists use scanning tunneling microscope to view silicon through lead coating)(Brief Article) (Science News)

Localization of Linker Histone in Chromatosomes by Cryo-Atomic Force Microscopy (Biophysical Journal)

A Nuclear Family Vacation: Travels in the World of Atomic Weaponry.(Book review) (ForeWord)

No Einstein: overshadowed by a legendary mentor, Leo Szitard switched on the Atomic Age.(Biography) (Mechanical Engineering-CIME)

Probe yields 3-D atomic view of the chemistry of solids. (R & D)

Additional search results provided by HighBeam Research, LLC. © Copyright 2005. All rights reserved.

Infoplease Tools