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Where to get "impure" elemental selenium.
Well I see I'm seriously out of date on the toner drum technology. Selenium Sulfide is also availabl ... |
17-10-2011 at 09:12
by: Mr. Wizard |
Where to get "impure" elemental selenium.
The print drums on old Xerox copiers used to be Selenium. A Selenium allotrope changes resistance wi ... |
16-10-2011 at 16:16
by: Mr. Wizard |
Video lab tour/how to get chemicals
Yes,,, mine worked its way through a 1/2" thick OSB shelf , a cheap type of plywood, and spread out. ... |
15-10-2011 at 20:32
by: Mr. Wizard |
Video lab tour/how to get chemicals
I must tell you about a near disaster I just avoided. I had two boxes of Calcium Chloride, sold as d ... |
15-10-2011 at 14:49
by: Mr. Wizard |
Isotope distribution in the universe ?
[rquote=224569&tid=17763&author=blogfast25]The isotope distribution throughout the universe ... |
15-10-2011 at 07:29
by: Mr. Wizard |
Create a Stronger Vacuum with Dual Aspirators?
firecreature, yes the aquarium and waterbed pumps are made primarily to handle water, and will screw ... |
30-9-2011 at 11:46
by: Mr. Wizard |
Create a Stronger Vacuum with Dual Aspirators?
You might draw more volume, but the lowest pressure you could draw would still be the vapor pressure ... |
29-9-2011 at 20:52
by: Mr. Wizard |
Reducing Sodium Sulfate to its Sulfite
Wouldn't burning sulfur in air produce SO2 that could be pulled through water to form a H2SO3 soluti ... |
29-9-2011 at 08:26
by: Mr. Wizard |
Small resistance heater. Problem
What is happening is electrolysis of the heating element. The voltage drop across the resistance wi ... |
27-9-2011 at 16:51
by: Mr. Wizard |
Electroforming Copper Liners
Regarding the corrosion on the aluminum forms, be aware they might be using an alloy of zinc and alu ... |
12-9-2011 at 09:02
by: Mr. Wizard |
Isolation of thorium metal
Small amounts of up to 3%Thorium Oxide are used in Tungsten Inert Gas (TIG) welding electrodes. Tho ... |
7-9-2011 at 08:26
by: Mr. Wizard |
Constant gas flow from electrolysis?
Is your electrolysis unit open to the air? Containing the electrolyte and electrodes inside a seale ... |
7-9-2011 at 06:52
by: Mr. Wizard |
How should I properly dispose of iron acetate?
In an area with hard calcium carbonate rich water it would even make a good garden additive. Where I ... |
2-9-2011 at 14:43
by: Mr. Wizard |
"Swirls"?
On the subject of Schlieren methods of seeing density and diffraction by means of parallel light bei ... |
1-9-2011 at 10:55
by: Mr. Wizard |
Mason Jars?
I hadn't thought about storing paint in them, but it would work well. I have used the larger 24 oz ( ... |
29-8-2011 at 12:16
by: Mr. Wizard |
Mason Jars?
Most "Mason Jars", Kerr , Ball or similar type have a two part lid. The flat part of the lid is mean ... |
29-8-2011 at 07:37
by: Mr. Wizard |
Poor alcohol lamp performance
A compressed wick was my first thought. How does this happen? Somebody buys a new wick and forces it ... |
21-8-2011 at 13:47
by: Mr. Wizard |
Video lab tour/how to get chemicals
[rquote=219546&tid=17317&author=Acetic Acid]Although some of it was clearly meant to be hurt ... |
21-8-2011 at 13:36
by: Mr. Wizard |
Video lab tour/how to get chemicals
The stuff stored in his closet is stored with the stuff most likely to leak and cause a problem at t ... |
19-8-2011 at 15:26
by: Mr. Wizard |
Calculus: utility in chemistry
Knowledge is like a box full of tools, or a lab full of equipment. Who knows what may prove to be an ... |
18-8-2011 at 21:06
by: Mr. Wizard |
Recovering Platinum tips on spark-plugs
It was time for the 100K mile tune up on my truck, so I asked the mechanic to save the plugs, which ... |
18-8-2011 at 08:07
by: Mr. Wizard |
Insane science projects — Think BIG
They say on the first page they will publish separate articles on combustion of metals with other ga ... |
17-8-2011 at 08:49
by: Mr. Wizard |
sulfur and tarnishing
I think he is trying to prevent the tarnishing, rather than looking for an easy way to remove it. If ... |
13-8-2011 at 14:33
by: Mr. Wizard |
sulfur and tarnishing
In the US, ethyl mercapitan is the usual gas odorant. It has an intense smell, and a leaking bottle ... |
13-8-2011 at 07:10
by: Mr. Wizard |
gas cylinders?
If you know the volume of the cylinder at normal air pressure , then you know how much it holds at n ... |
12-8-2011 at 21:40
by: Mr. Wizard |
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