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Topic: Didymium

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	Didymium UV and Visible Wavelength
		Didymium glass has been used for many years as a high wavelength visible reference material.
		When prepared in perchloric acid, didymium gives a spectral scan containing a series of sharp characteristic peaks that extend well above the useable range of the holmium into the near NIR (680-900 nm).
		All Starna® didymium Certified Reference Materials are manufactured using procedures similar to those used in the preparation of our Holmium Oxide Reference Material (RM-HL).
	www.optiglass.com /ukhome/d_ref/didymium.html (264 words)

	didymium
		and Nann.-Bremek., Didymium atrichum Henney and Alexop., Didymium bahiense Gottsb., Didymium bahiense var.
		and Broome, Didymium leptotrichum (Racib.) Massee, Didymium listeri Massee, Didymium macrospermum Rostaf., Didymium marineri G.Moreno Illana and Heykoop, Didymium martinii (T.N.Lakh.) H.Neubert Nowotny and K.Baumann, Didymium megalosporum Berk.
		and Schwein.) Fr., Didymium sturgisii Hagelst., Didymium subreticulosporum Oltra G.Moreno and Illana, Didymium synsporon T.E.Brooks and H.W.Keller, Didymium trachysporum G.Lister, Didymium tubicrystallinum Nann.-Bremek.
	www.nivicol.de /didymium.htm (814 words)

	Phillips Ace-202 Didymium Lenses
		Excellent for those who are not interested in ordering didymium prescription glasses but want the same protection as other lampworkers for their eye's..
		If you are using didymiums instead of the proper borosilicate glass eye protection and you are not ready to purchase a proper pair, you can use these clip-ons temporarily.
		If your using didymiums instead of the borosilicate glass eye protection and you are not ready to purchase boroscopes, you can use these clip-ons temporarily.
	jodelglass.com /shopsite_sc/store/html/page26.html (0 words)

	Didymium UV and Visible Wavelength
		Didymium glass has been used for many years as a high wavelength visible reference material.
		When prepared in perchloric acid, didymium gives a spectral scan containing a series of sharp characteristic peaks that extend well above the useable range of the holmium into the near NIR (680-900 nm).
		All Starna® didymium Certified Reference Materials are manufactured using procedures similar to those used in the preparation of our Holmium Oxide Reference Material (RM-HL).
	www.starna.co.uk /ukhome/d_ref/didymium.html (248 words)

	Didymium Safety Glasses - Sundance Art Glass Center
		Most all of the didymium lenses available anywhere comes from the same factory in Germany.
		So the only difference between where you buy your glasses is: the style of the frame and how much you pay.
		Boroscopes should be worn when working on hard glass types where regular didymium lenses are not adequate due to the fact of insufficient filtration of ultra violet and infrared absorption.
	www.sundanceglass.com /didymiumsr.htm (0 words)

	: Economy Didymium Glasses
		Boroscope with #3 shade Didymium lenses combined with welding shade
		The basic Didymium lenses are ideal for working clear glass or soft glass in the torch.
		They are not enough protection for those working with large amounts of borosilicate color or fuming.
	www.winshipdesigns.com /home/ws3/page_567_45/economy_didymium_glasses.html (0 words)

	Didymium II
		Didymium II Didymium II For some time now, there has been a product called ‘Didymium II’ floating around the industry.
		TRUE Didymium is a combination of neodymium and praseodymium, which are rare earths that create the classic didymium transmission spectra.
		Another example: if you are doing traditional glassblowing and working at a glory hole and/or furnace, you are being exposed to tremendous amounts of IR and you need to take steps to limit your exposure.
	www.auralens.net /e_gwdidymium2.cfm (780 words)

	didymium - Search Results - MSN Encarta
		Didymium Safety Glasses - Sundance Art Glass Center
		Didymium Safety Glasses for the Flameworker, Lampworker, Glass Blower, and Glass Beadmaker.
		This interactive Java tutorial explores how didymium filters act to enhance certain tones and hues...
	encarta.msn.com /didymium.html (113 words)

	Didymium (Site not responding. Last check: )
		Didymium is a mixture of the elements praseodymium and neodymium.
		It is used in safety glasses for glass blowing, where it provides a narrow filter which blocks mainly the light emitted by the hot sodium in the glass, without having much effect on general vision, unlike dark welder's glasses.
		Didymium was wrongly believed to be one of two elementss discovered by Carl Mosander in 1839.
	www.gogoglo.com /wiki/en/wikipedia/d/di/didymium.html (156 words)

	Molecular Expressions Microscopy Primer: Photomicrography - Interactive Java Tutorials - Didymium Filters for Color ...
		Didymium filters remove a portion of the orange region of the visible light spectrum, an effect that increases the color saturation intensity of brown, blue, and red-stained features in the specimen.
		The extinction coefficient is highest between 580 and 590 nanometers for the didymium filter, allowing the filter to remove most of the orange and yellow colors that tend to dull red and blue tones in stained thin sections.
		Didymium filters are produced in very thin glass sections with a thickness of between one and two millimeters, because the amount of light absorbed by the filter is dependent upon filter thickness.
	www.molecularexpressions.com /primer/java/photomicrography/didymium/index.html (666 words)

	Didymium - LoveToKnow 1911
		In 1879, however, Lecoq de Boisbaudran showed that Mosander's "didymium," contained samarium; while the residual "didymium" after removal of samarium, was split by Auer v.
		Chemie, 1885, 6, 477) into two components (known respectively as neodymium and praseodymium) by repeated fractional crystallization of the double nitrate of ammonium and didymium in nitric acid.
		Neodymium (Nd) forms the chief portion of the old "didymium." Its salts are reddish violet in colour, and give a characteristic absorption spectrum.
	www.1911encyclopedia.org /Didymium (199 words)

	Didymium glasses (Don Wilkins) (Site not responding. Last check: )
		Didymium is a name given to a rare earth mixture.
		Didymium is a mixture of neodymium and praseodymium.
		Didymium should be listed in any decent English dictionary.
	www.yarchive.net /metal/didymium.html (524 words)

	Singh-Ray Filters: Nye Simmons on Enhancing Filters
		While the intense reds and oranges knocked your socks off, and the yellows were often improved, it had significant color cross-over problems (the overall magenta cast taken on by the neutrals, whites, greens, and lighter pastel shades).
		Didymium is a blend of two rare earth elements, praseodymium and neodymium, which have unusual spectrophotometric properties.
		If you have been disappointed with the results from didymium, then the Singh-Ray should be looked at closely, as the objectionable effects are significantly diminished while the desired effect is improved.
	www.singh-ray.com /srci2.html (2106 words)

	Rare-Earth Magnets - Neodymium Properties
		He named the element didymium, as it was an inseparable twin brother of lanthanum.
		While the free metal is in misch metal, long known and used as a pyrophoric alloy for light flints, the element was not isolated in relatively pure form until 1925.
		Didymium, of which neodymium is a component, is used for coloring glass to make welders goggles.
	www.rareearth.org /neodymium_properties.htm (337 words)

	didymium (Site not responding. Last check: )
		Sorry, "didymium" still seems to be on our 'things to do' list...
		Electrowinning high-purity neodymium, praseodymium, and didymium metals from their oxides (Report of investigations)
		Didymium glass filters for calibrating the wavelength scale of spectrophotometers--SRM 2009, 2010, 2013, and 2014 (Standard reference materials)
	www.abacci.com /wikipedia/topic.aspx?cur_title=didymium (76 words)

	physics - Didymium
		Mosander wrongly believed didymium to be an element, however in 1885 Carl Auer von Welsbach discovered that didymium was really a mixture of the elements praseodymium and neodymium.
		Mosander had concluded that "ceria" (sometimes called cerite) isolated by Jöns Jakob Berzelius in 1803 was really a mixture of cerium, lanthanum and didymium.
		During the period when it was believed to be an element, the symbol Di was used for it.
	www.physicsdaily.com /physics/Didymium (182 words)

	Neodymium - History, Properties and Applications
		He believed that the oxide contained a new element which he names didymium, as it was the inseparable twin brother of lanthanum.
		Although, von Welsbach successfully separated didymium into two elemental components, neodymia and praseodymia in 1885, it was not until 1925, when neodymium was separated into a raltively pure form.
		Similarly didymium is used for making the glass that goes into welders goggles and neodymium is used as a colourant for enamels.
	www.azom.com /details.asp?ArticleID=1595 (365 words)

	Glassblowing Supplies - Didymium Glasses P-70F
		Rose didymium is a high luminous transmittance filter specifically designed to absorb bright yellow sodium flare (589 nm) which occurs when heating glass.
		Didymium lenses protect the eyes from certain visible and UV light produced in the glassblowing process.
		They enable the glassblower to see the glass while it is being worked in the flame.This is the classic filter that has been used for many years in all types of hot glass applications, as well as kiln working.
	www.glasscolor.com /products/default.aspx?cID=52&pID=602 (91 words)

	Plasmodial incompatibility in the myxomycete Didymium squamulosum -- Clark 95 (1): 24 -- Mycologia
		Plasmodial incompatibility in the myxomycete Didymium squamulosum -- Clark 95 (1): 24 -- Mycologia
		1978 Plasmodial incompatibility in the myxomycete Didymium nigripes.
		Collins OR, Clark J., 1968 Genetics of plasmodial incompatibility and heterokaryosis in Didymium iridis.
	www.mycologia.org /cgi/content/full/95/1/24 (1172 words)

	Phillips Ace-202 Didymium Lenses
		Excellent for those who are not interested in ordering didymium prescription glasses but want the same protection as other lampworkers for their eye's..
		If you are using didymiums instead of the proper borosilicate glass eye protection and you are not ready to purchase a proper pair, you can use these clip-ons temporarily.
		If your using didymiums instead of the borosilicate glass eye protection and you are not ready to purchase boroscopes, you can use these clip-ons temporarily.
	www.jodelglass.com /shopsite_sc/store/html/page26.html (879 words)

	didymium safety glasses :: dark sunglasses
		The beauty of rose safety glasses from Didymium is the fact that you can add lenses over top the standard protection.
		There are three shades of Didymium you can combine in addition to the standard protection.
		The first class of shades is simply enhanced Didymium, which doesn't offer much more protection than the standard Didymium glasses beyond reducing the yellow glare from the Sodium used in glass making.
	www.safety-glasses-n-goggles.com /203-didymium-safety-glasses.html (378 words)

	Amazon.com: didymium: Books (Site not responding. Last check: )
		Didymium glass filters for calibrating the wavelength scale of spectrophotometers--SRM 2009, 2010, 2013, and 2014 (Standard reference materials) by William H Venable (Unknown Binding - 1979)
		He named the element didymium, as it was an in- separable twin brother of lanthanum.
		Didymium Filters The Didymium Filter is a combination of rare earth...
	www.amazon.com /s?ie=UTF8&keywords=didymium&tag=540-20&index=books&link_code=qs&page=1 (1109 words)

	Didymium Safety Glasses - Sundance Art Glass Center
		Most all of the didymium lenses available anywhere comes from the same factory in Germany.
		So the only difference between where you buy your glasses is: the style of the frame and how much you pay.
		Boroscopes should be worn when working on hard glass types where regular didymium lenses are not adequate due to the fact of insufficient filtration of ultra violet and infrared absorption.
	www.artglass1.com /didymiumsr.htm (550 words)

	Supplies & Flameworking Supplies
		With the clip-ons you can have your correct vision without paying big bucks.
		The Didymium lens cuts down on soda flare, so you can not only see better, but reduce eye fatigue while protecting your eyes.
		Deluxe High Heat Kevlar/PBI gloves - 14" Length
	www.delphiglass.com /flameworking/supplies (0 words)

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