February 27, 2014 Social Science
John Lloyd Stephens (1805-1852) was an American explorer, government official and amateur archaeologist. His work in Central America is widely credited as being crucial to the rediscovery of Mayan civilization. According to researcher Joshua J. Mark, Stephens was born in…
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February 27, 2014 Physical Science
Baking soda is scientifically known as “sodium bicarbonate” or, if you lived a century or more ago – bicarbonate of soda. The chemical formula for baking soda is NaHCO3, where Na is the sodium ion, and HCO3 is the bicarbonate…
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February 26, 2014 Physical Science
Are you looking for some hot chemistry gifts for Christmas 2010? Some kids are naturally drawn to chemistry and others are terrified of the word alone. If we present chemistry as what it is, a combining of substances and matter…
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February 26, 2014 Physical Science
It was with awe when Apollo 11 landed on the moon and the world watched Neil Armstrong take a step and say, “This is one small step for man, one giant leap for mankind.” The moon has always been mysterious….
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February 26, 2014 Physical Science
The valence bond theory is a quantum mechanics theory that, like the molecular orbitals theory, tries to explain the chemical bonding between atoms. Each of these theories have different perspectives on how the bond forms. The valence bond theory is a…
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February 26, 2014 Physical Science
Searched for, killed for, hoarded, worshiped, used as money , used to decorate man and building, this shiny yellow metal has fascinated mankind since long before the ancient Egyptians first began mining it. From gold objects made by Cro-Magnon man…
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February 26, 2014 Social Science
Major-General Sir Henry Creswicke Rawlinson (1810-1895) was a British military officer, politician and scholar. He is best remembered for his groundbreaking work translating cuneiform tablets left by the ancient Assyrians. Once archaeologists were able to read ancient scripts like this,…
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February 26, 2014 Earth Science
For centuries, human beings have prized rubies as valuable gems. The brilliant deep red hues of rubies rendered them attractive as jewelry items since ancient times. But the chemical composition of these precious stones might surprise you, however; they are…
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February 26, 2014 Physical Science
Molecular orbital theory is a theoretical method in chemistry that tries to give an explanation to the chemical bond in terms of molecular orbitals formation that are formed by the addition and subtraction of two atomic orbital functions. This method…
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February 26, 2014 Physical Science
Space can inspire the imagination like nothing else. If you have ever looked up into the night sky and seen a full moon, it seems like space goes on forever. On Earth, the most distinctive feature in the night sky…
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