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Topic: Beryllium 10

	Beryllium - Wikipedia, the free encyclopedia
		Beryllium oxide is useful for many applications that require an excellent heat conductor, with high strength and hardness, with a very high melting point, and that acts as an electrical insulator.
		Although the use of beryllium compounds in fluorescent lighting tubes was discontinued in 1949, potential for exposure to beryllium exists in the nuclear and aerospace industries and in the refining of beryllium metal and melting of beryllium-containing alloys, the manufacturing of electronic devices, and the handling of other beryllium-containing material.
		Beryllium and its compounds should be handled with great care and special precautions must be taken when carrying out any activity which could result in the release of beryllium dust (lung cancer is a possible result of prolonged exposure to beryllium laden dust).
	en.wikipedia.org /wiki/Beryllium (2264 words)

	Encyclopedia :: encyclopedia : Proxy (climate) (Site not responding. Last check: 2007-09-29)
		Isotopic variations in ice cores can be used to infer temperature changes and ice sheet volume.
		Beryllium 10 variations can be used to infer past solar irradiance.
		Fractionation occurs during changes between condensed and vapour phases: the vapour pressure of heavier isotopes is lower, so vapour contains relatively more of the lighter isotopes and when the vapour condenses the precipitation preferrentially contains heavier isotopes.
	www.hallencyclopedia.com /Proxy_(climate) (367 words)

	Beryllium
		A highly toxic bivalent element, beryllium is a steel grey, strong, light-weight yet brittle, alkaline earth metal, that is primarily used as a hardening agent in alloys (most notably beryllium copper).
		The modulus of elasticity of beryllium is approximately 1/3 greater than that of steel.
		In the telecommunications industry, Beryllium is made into tools that are used to tune the highly magentic klystrons used for high power microwave transmissions for safety.
	omniknow.com /common/wiki.php?in=en&term=Beryllium (3510 words)

	CHAPTER 7 - DATING METHODS Part 1
		This will be covered in the chapters, Primitive Environment (chapter 9), and DNA (chapter 10).
		If that were true, then radical resetting of radioactive clocks would have occurred.
		(10) The daughter products must be measured as a ratio of the parent substance in order to obtain a date, but, aside from leaching and other factors, some of the daughter products go off in the form of gases.
	www.evolution-facts.org /Ev-V1/1evlch07a.htm (9175 words)

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