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Why you can't buy sulfuric acid Why stop at banning sulphuric acid? Boiling water disfigures many more kids every year than acid doe ... |
24-7-2012 at 20:26 by: Twospoons |
Flash Set of Cement Sounds like you need to add a retarder.
Snipped from Wikipedia article on concrete:
"Retarders s ... |
24-7-2012 at 19:01 by: Twospoons |
Acid Resistant Coating for Storage Purposes? Isn't paraffin wax used to line glass bottles for storing HF? Maybe you could adapt that approach. |
17-7-2012 at 14:19 by: Twospoons |
Suggestion for keeping oil dry? I've settled on silicone oil, as it isn't flammable and seems to be more compatible with the polypro ... |
16-7-2012 at 20:44 by: Twospoons |
Suggestion for keeping oil dry? I've seen the musical ones. Thats a feature thats going to have to be some way down the track. I jus ... |
15-7-2012 at 17:56 by: Twospoons |
Suggestion for keeping oil dry? Vacuum tube Tesla coil ![:D](./images/smilies/biggrin.gif)
The variable cap is so I can easily tune the primary side oscillator into ... |
15-7-2012 at 15:12 by: Twospoons |
Suggestion for keeping oil dry? I am making a high voltage variable capacitor by submerging a variable air-spaced capacitor in oil, ... |
15-7-2012 at 14:34 by: Twospoons |
identification of unusual electronic component, large. [rquote=253116&tid=20610&author=watson.fawkes] That's enormous, and would be very instantly ... |
2-7-2012 at 14:14 by: Twospoons |
Sciencemadness turns ten! Congradulations! Been nearly 8 years for me, and I still drop in every day (mostly lurking now). How time flies. Con ... |
10-6-2012 at 19:06 by: Twospoons |
High temperature, high speed thermometer I would have said 'spectroscope' too. Ordinary IR pyrometers are not that fast. At 7000K analysing ... |
7-6-2012 at 13:55 by: Twospoons |
Water flouridation I wonder how many smokers there are in the anti-fluoride brigade?
I have a mate who tells me about ... |
4-6-2012 at 19:11 by: Twospoons |
Cracking Diesel Fuel I recall an experiment in chem class ( ~30 years ago) where we passed kerosene vapor over heated por ... |
20-5-2012 at 14:36 by: Twospoons |
air liquefier attempt, questions Don't forget to put some kind of safety shield between you and those compressors. Just in case ...
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30-4-2012 at 22:12 by: Twospoons |
air liquefier attempt, questions ^ what he said. Also post compressor and water cooling you could add an air tank placed in a domesti ... |
11-4-2012 at 21:27 by: Twospoons |
How to control the temperature of an oil bath & PID controller equipment basics Dann2, you are over thinking it. The PID algorithm does control the on ff
timing ratio of the outp ... |
4-4-2012 at 18:48 by: Twospoons |
How to control the temperature of an oil bath & PID controller equipment basics The Omron controllers I use at work have an adjustable cycle time - down to 0.5 seconds. Unless you ... |
4-4-2012 at 15:55 by: Twospoons |
Substances with near room temp phase change bahamuth : thanks for the "stormglass" tip. What a neat idea. I love it how these weird little thing ... |
27-3-2012 at 16:33 by: Twospoons |
On solar hot water systems Used to be that PV cells needed as much energy to manufacture as they could produce in their lifetim ... |
31-1-2012 at 00:22 by: Twospoons |
Change wavelength of light? [rquote=235106&tid=18700&author=Polverone]Most green laser pointers work by frequency doubli ... |
31-1-2012 at 00:16 by: Twospoons |
On solar hot water systems 3/4 of a litre of warm water makes for a very short shower! |
26-1-2012 at 18:49 by: Twospoons |
On solar hot water systems Where did you get the idea that painted radiators are better than evacuated glass tubes with heat pi ... |
26-1-2012 at 14:55 by: Twospoons |
Recovering useable components from a car battery There's the messy, toxic, environmentally unfriendly way : put the whole battery on top of a forced ... |
24-11-2011 at 20:36 by: Twospoons |
Eggs down car air vent Trade up on a new car before it starts to smell.
People say H2S smells like rotten eggs: well I've ... |
9-11-2011 at 20:38 by: Twospoons |
Solar energy a pipe dream? The only use I can think of for the fluidyne is pumping water in areas where the only energy source ... |
9-11-2011 at 17:30 by: Twospoons |
Garden Sulfur for Oxidizing Copper? Yes Lime Sulphur definitely works - I've used it for that purpose myself. I usually add a bit of po ... |
8-11-2011 at 18:56 by: Twospoons |
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