(Encyclopedia) gamma radiation, high-energy photons emitted as one of the three types of radiation resulting from natural radioactivity. It is the most energetic form of electromagnetic radiation,…
(Encyclopedia) electric fish, name for various fish that produce electricity by means of organs usually developed from modified muscle tissue. The electric eels of South America are freshwater…
(Encyclopedia)
CE5
Sextant
sextant, instrument for measuring the altitude of the sun or another celestial body; such measurements can then be used to determine the observer's geographical…
PINHOLE CAMERAFILM CAMERAMILESTONES OF PHOTOGRAPHYPHOTOGRAPHIC FILMDIGITAL PHOTOGRAPHYFIND OUT MOREA camera is a device that records pictures. It consists of a sealed box that catches the light…
The ringleader of the murders, Edgar Ray Killen, was convicted on June 21, 2005, the 41st anniversary of the crimes
by Borgna Brunner
Related Links Black History Month Encyclopedia: Civil…
WHEN DID PEOPLE FIRST STUDY THE SKY? WHAT DO ASTRONOMERS STUDY TODAY? TELESCOPESFIND OUT MOREAstronomy is the science that studies the stars and all the other bodies (objects) in space. The…
Does Microwave Radiation Affect Seed Growth?Science Projects for BeginnersBotany ProjectsDoes Microwave Radiation Affect Seed Growth?Which Bulbs Are Best for Forcing? Scientific Surprise A…
rock group Rock group remembered for its dark, poetic lyrics, psychedelic guitars, and the drug-induced antics of singer Jim Morrison. Morrison met keyboardist Ray Manzarek at UCLA in the mid-…
(Encyclopedia) Kendrew, John Cowdery, 1917–97, British biochemist, grad. Cambridge (Ph.D. 1949). He was a fellow of Peterhouse College at Cambridge from 1947 to 1975 and was scientific adviser to the…
Global Warming Many scientists believe human-caused pollution is making the world a warmer place, a process called global warming. Scientists also think…
