Encyclopedia of Earth: 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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Moon shrinkage
Moon shrinkage is a recently confirmed phenomenon based upon photographs from NASA’s Lunar Reconnaissance Orbiter spacecraft. The diminution of size in the Earth’s moon is thought to be...
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International Year of Chemistry 2011 (IYC 2011)
International Year of Chemistry 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 unifying theme...
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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 how cutting-edge research...
Articles
Characterization of Indoor Fine Particulate Matter Sources Assessment of human exposure to fine particulate ...
Poor indoor air quality has been linked to health problems. This article, written by Dr. Luz Claudio*, appeare...
Weatherproofing must be undertaken with care to avoid unintended problems with indoor air quality. This ar...
Introduction Pure nickel is a hard, silvery-white metal, which has properties that make it very desir...
An extremophile is an organism adapted to unusual limits of one or more abiotic factors in the environment. So...
Eggs Show Arctic Mercury Cycling May Be Linked to Ice Cover An international research team working with Nat...
NIH study finds two pesticides associated with Parkinsons disease New research shows a link between use of t...
News Articles
Highest levels of flame retardant chemicals reported in California pregnant women Group finds that low-inco...
In December 2011, a high-speed robotic screening system, aimed at protecting human health by improving how che...
►Main Image: Inside the test chamber, the thin-film sample (measuring 6 centimeters on a side), which has be...
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International Year of Chemistry 2011 The International Year of Chemistry 2011 (IYC 2011) is a worldwide cele...
Galleries
Agriculture Gallery II Humans began to cultivate food crops about 10,000 years ago. Prior to that time, hun...
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