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magnetism

(Encyclopedia) CE5 Lines of induction around a single bar magnet and between opposite poles of different magnets magnetism, force of attraction or repulsion between various substances, especially…

Aceldama

(Encyclopedia) AceldamaAceldamaəkĕlˈdəmə [key] [Aram.,=field of blood], according to the Gospel of St. Matthew, the chief priests bought the potter's field with Judas' 30 pieces of silver as a place…

Hall effect

(Encyclopedia) Hall effect, experiment that shows the sign of the charge carriers in a conductor. In 1879 E. H. Hall discovered that when he placed a metal strip carrying a current in a magnetic…

Top 2012 Google Searches

This table lists the top Google searches for 2012. RankTitle1. Whitney Houston2. Gangnam Style3. Hurricane Sandy4. iPad 35. Diablo 36…

A Shock to the System?

Several Tropical Countries Make Their Debut at the Winter Games by Catherine McNiff Related Links 2010 Winter OlympicsMemorable Olympic MomentsBirth of the Modern…

Sondheim, Stephen Joshua

(Encyclopedia) Sondheim, Stephen Joshua Sondheim, Stephen Joshua sôndˈhīm [key], 1930–2021, American composer and…

magnetic resonance

(Encyclopedia) magnetic resonance, in physics and chemistry, phenomenon produced by simultaneously applying a steady magnetic field and electromagnetic radiation (usually radio waves) to a sample of…

DK Science: Magnetism

MAGNETIC MATERIALSATTRACTION AND REPULSIONMAGNETIC DOMAINSMAGNETIC FIELDFIND OUT MOREMagnetism is what gives magnets their ability to attract objects made of iron or steel. A magnet creates…

How Big is an Acre?

The Question: I'm trying to visualize an acre. Is it about the size of a football field? The Answer: Yes. Often an acre of land is compared to…

Dickinson, Emily

(Encyclopedia) Dickinson, Emily, 1830–86, American poet, b. Amherst, Mass. She is widely considered one of the greatest poets in American literature. Her unique, gemlike lyrics are distillations of…