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Pickering, William Henry

(Encyclopedia) Pickering, William Henry, 1858–1938, American astronomer, b. Boston, grad. Massachusetts Institute of Technology (B.S., 1879). He taught at the Massachusetts Institute of Technology (…

Algebra: Investigating Variation

Investigating Variation Algebra Rational Equations and Inequalities Solving Rational Equations Proportions and Cross Multiplying Investigating Variation Solving Rational Inequalities There…

Inch to Millimeter Conversion

The Question: I'm an auto mechanic, and I am trying to find a chart for conversion from millimeters to fractions of inch. Can you help? The Answer: We here at…

United Nations Security Council

  The Security Council was constructed as an organ with primary responsibility for preserving peace. Unlike the General Assembly, it was given power to enforce measures and was organized as…

Broadcasting Glossary

addressable converterA cable television box that can be supplied with programming by a cable system, providing pay-per-view events.bandwidthThe numerical difference between the upper and lower…

More Features

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Advanced-Level Science Projects: Earth Science

Earth ScienceAdvanced-Level Science ProjectsEarth ScienceHow Much Oxygen Is in the Air?Which Is More Acidic, Snow or Rain? How Can Different Polymers Be Identified? It seems at times that we…

Anatomy and
Physiology: Gyri and Sulci

Gyri and SulciAnatomy and PhysiologyThe Central and Peripheral Nervous SystemsYou've Got Some Nerve!Gyri and SulciThe Control CenterSensory and Motor ControlThalamus: The Switching StationSpinal…

How Big Is a Bit?

bit: The word "bit" is short for "binary digit." A bit is the smallest piece of computer information. byte: Most computers use combinations of eight bits, called bytes, to represent one…