Samvinna
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FEGURÐ OG VELLÍÐAN
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MENNING OG SAGA
SKEMMTUN
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MATUR OG DRYKKUR
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Efnafræði
1.290 teikningar tiltækar • 22 undirflokkar
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Teikningar (1.290)
Hættulegt
Praseodymium: Anhydrous Chloride Reduced with Calcium in a Tantalum Bomb at 1050 °C, then Vacuum Cast (Daane, Ames 1950)
eftir Charlie
Ólífrænt
9
0
0
0
0
0
Hættulegt
Lanthanum: Anhydrous Chloride Reduced with Calcium in a Tantalum Bomb under Argon, then Vacuum Cast (Daane, Ames 1950)
eftir Charlie
Ólífrænt
9
0
0
0
0
0
Hættulegt
Rhenium: Ore Heated with Nitre Cake at 300 °C, Oxide Caught, Sulphide Reduced in Hydrogen at 1000 °C (Driggs, US 1,911,943)
eftir Charlie
Ólífrænt
6
0
0
0
0
0
Hættulegt
Radium: Chloride Electrolysed onto Mercury, Amalgam Heated to 700 °C in Hydrogen (Curie and Debierne, 1910)
eftir Charlie
Ólífrænt
7
0
0
0
0
0
Hættulegt
Radium Chloride: Pitchblende Residues Worked Up and the Chlorides Fractionally Crystallised from Hydrochloric Acid (Curie, Debierne, Haitinger and Ulrich, Thorpe 1912)
eftir Charlie
Ólífrænt
8
0
0
0
0
0
Samarium: Oxide Reduced with Graphite at 1700 °C in Vacuum and Distilled Twice (Downing, Gorski and Koerner, US 3,104,970)
eftir Charlie
Ólífrænt
5
0
0
0
0
0
Yttrium: Fluoride Reduced with Calcium and Magnesium at 1000 °C, then Distilled to Sponge (Carlson, Schmidt and Spedding, US 2,950,962)
eftir Charlie
Ólífrænt
7
0
0
0
0
0
Hafnium: Iodide Vapour Split on a Tungsten Wire Heated beyond 1600 °C (van Arkel and de Boer, US 1,671,213)
eftir Charlie
Ólífrænt
5
0
0
0
0
0
Hættulegt
Gadolinium: Mixed Rare-Earth Chlorides Reduced with Calcium in Tantalum, Samarium Left in the Slag (Spedding and Daane, US 2,714,554)
eftir Charlie
Ólífrænt
5
0
0
0
0
0
Neon: Atmospheric Argon Fractionated in Liquid Air, then Parted from Helium in Liquid Hydrogen (Ramsay and Travers, 1901)
eftir Charlie
Ólífrænt
6
0
0
0
0
0
Liquid Hydrogen: Gas at 200 Atmospheres Cooled by Dry Ice and Liquid Air, then Expanded in a Regenerator Coil (Travers, 1901)
eftir Charlie
Ólífrænt
4
0
0
0
0
0
Krypton and Xenon: Liquid-Air Residues Cleaned and Fractionated at the Temperature of Liquid Air (Ramsay and Travers, 1901)
eftir Charlie
Ólífrænt
5
0
0
0
0
0
Liquid Air: Air Compressed to 170 Atmospheres and Expanded through the Hampson Liquefier (Travers 1901)
eftir Charlie
Ólífrænt
4
0
0
0
0
0
Carbon as Pure Graphite: Coke and Sand Heated round a Coke Core in an Electric Furnace (Acheson, US 568,323)
eftir Charlie
Ólífrænt
10
0
0
0
0
0
Hættulegt
Fluorine: Anhydrous Hydrogen Fluoride with Potassium Hydrogen Fluoride Electrolysed at -23 °C in a Platinum U-Tube (Moissan 1886)
eftir Charlie
Ólífrænt
6
0
0
0
0
0
Hættulegt
Potassium Hydrogen Fluoride and Anhydrous Hydrogen Fluoride: Moissan's Purification of Commercial Acid (Thorpe 1912)
eftir Charlie
Ólífrænt
7
0
0
0
0
0
Hættulegt
Niobium: Fused Potassium Niobium Oxyfluoride Electrolysed at 400-600 A in a Water-Jacketed Iron Pot (Balke, US 1,905,882)
eftir Charlie
Ólífrænt
9
0
0
0
0
0
Hættulegt
Tantalum: Fused Fluoride Bath with Tantalum Oxide Electrolysed at 700 °C (Driggs, US 1,815,054)
eftir Charlie
Ólífrænt
14
0
0
0
0
0
Hættulegt
Tantalum Pentoxide: Potassium Tantalum Fluoride Heated with Sulphuric Acid to 400 °C and Ignited (Roscoe 1913)
eftir Charlie
Ólífrænt
7
0
0
0
0
0
Hættulegt
Potassium Tantalum Fluoride: Tantalite Fused with Bisulphate, Dissolved in Hydrofluoric Acid and Crystallised (Roscoe 1913)
eftir Charlie
Ólífrænt
9
0
0
0
0
0
Hættulegt
Thorium: Oxide Reduced with Calcium and Calcium Chloride in a Sealed Bomb at 950 °C (Marden and Rentschler, US 1,814,719)
eftir Charlie
Ólífrænt
4
0
0
0
0
0
Hættulegt
Thorium Nitrate: Monazite Sand Opened with Sulphuric Acid, through Phosphate, Oxalate and Sulphate (Roscoe 1913)
eftir Charlie
Ólífrænt
6
0
0
0
0
0
Hættulegt
Vanadium: Dichloride Reduced in Perfectly Pure Hydrogen at Bright Red Heat (Roscoe, Treatise 1913)
eftir Charlie
Ólífrænt
3
0
0
0
0
0
Hættulegt
Vanadium Dichloride: Tetrachloride Vapour and Hydrogen through a Red-Hot Glass Tube (Roscoe 1913)
eftir Charlie
Ólífrænt
5
0
0
0
0
0
Sýni 24 af 1290