Physics & Chemistry
Physics is the the study of matter and its spatial motion; while it embraces the levels of nucleii, elementary particles and atoms, its domain relative to molecules and their interactions is more properly termed chemistry. The motion of particles is governed by the basic laws of physics including Newtonian mechanics (for large objects); electromagnetism; thermodynamics and quantum mechanics (in the case of molecular and smaller entities). The earliest forms of physics addressed are motions of celestial objects, and presently this field can be viewed as astrophysics. Physics also embraces the notions of the Theory of Relativity, so that the duality of space and time is addressed. Chemistry has taken on added importance in the last half century as the bridge between fundamental laws of nature and the understanding of cellular processes and replication of DNA, the basic molecule of organism genetic coding.
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Dark side of insulation
Building insulation has become a modish activity in the western world since the 1980s. Considerable benefits can accrue in energy conservation, occupant comfort and reduction of... More »
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International Year of Chemistry 2011 (IYC 2011)
The International Year of Chemistry 2011 (IYC 2011) is a worldwide celebration of the achievements of chemistry and its contributions to the well-being of humankind. Under the... More »
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A Walk Through Time
The Evolution of Time Measurement through the Ages. A Walk Through Time Ancient Calendars Celestial bodies — the Sun, Moon, planets, and stars — have... More »
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Global Challenges/Chemistry Solutions
Global Challenges/Chemistry Solutions Global Challenges/Chemistry Solutions is a series of podcasts describing some of the 21st century's most daunting problems, and... More »
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Halocarbon
A halocarbon is an organic chemical molecule composed of at least one carbon atom bound covalently with one or more halogen atoms; the most common halogens in these molecules... More »
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Chemical reaction
A chemical reaction is a process that transforms one set of chemical substances to another. The substances that take part in chemical reactions are known as reactants and the... More »
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Optical and acoustical phenomena in the Arctic
Optical Phenomena In the Arctic, people frequently see unique and beautiful optical phenomena. The atmospheric conditions that can lead to the development of these... More »
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Atmospheric lapse rate
The atmospheric lapse rate ( ) refers to the change of an atmospheric variable with a change of altitude, the variable being temperature unless specified... More »
Redwood Sorrel
Last Updated on 2013-05-20 at 18:13
Redwood Sorrel (Oxalis oregana)
Redwood Sorrel is in the Oxalidaceae, the wood sorrel family, a relatively small family with three genera and 875 species of mostly tropical... More »
Extraterrestrial soils
Last Updated on 2013-05-20 at 04:04
Extraterrestrial soils may be defined as any of the solid granular crustal features of planets and moon other than those soils on planet Earth. Despite four decades of space... More »
Kara Sea
Last Updated on 2013-05-14 at 14:13
The Kara Sea (alternatively, Karshoe More) is a saline marine body that is an element of the Arctic Ocean, situated north of the Siberian region of Russia.
Lying on the... More »
Sulu Sea
Last Updated on 2013-05-13 at 23:04
The Sulu Sea is a tropical seawater body in the Malayan Archipelago of Southeast Asia.
It is partitioned from the South China Sea in the northwest by the Phillipines island... More »
Sea of Marmara
Last Updated on 2013-05-13 at 22:37
The Sea of Marmara (also Sea of Marmora and, in the context of classical antiquity, as the Propontis) is an inland brackish sea which connects the Black Sea to the Aegean... More »
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