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Solar stills [file]90222[/file] Further improvement would be to make the wall silver with aluminium foil, ...	7-9-2021 at 21:12 by: Twospoons
Solar stills You're still thinking in terms of a lab still. Your solar still is going to be much slower, as the ...	7-9-2021 at 12:55 by: Twospoons
Transporting Glassware by Car - Melt Styrofoam for Custom Molds? [url=https://www.sealedair.com/products/protective-packaging/instapak-quick]foam-in-place[/url] 2 ...	3-9-2021 at 13:01 by: Twospoons
Can anything reasonably be done to improve Strontium Aluminate phosphorescense? Seems like you really did luck out - or you got scammed by the seller. I bought some many years ago ...	22-8-2021 at 12:31 by: Twospoons
Anything interesting to do with Lactic Acid? Did it ever occur to you that you are simply lucky enough to have strong teeth? And that if you had ...	10-8-2021 at 17:09 by: Twospoons
Drag forces exerted upon a sphere in a rotating fluid [url=https://www.researchgate.net/figure/Viscosity-as-a-function-of-shear-rate-for-PEG-solutions-The ...	22-7-2021 at 19:41 by: Twospoons
Drag forces exerted upon a sphere in a rotating fluid Are you assuming a Newtonian fluid? It may not be ...	22-7-2021 at 17:02 by: Twospoons
Reversing Lead Sulphation on Battery Plates [rquote=663166&tid=71096&author=Fulmen] Most electronics is ±5% so that's of little use. [/ ...	22-7-2021 at 12:59 by: Twospoons
Need some help on how to calculate the surface area of expanded mesh. Might be best to measure a sample. Starting with flat plate as a reference, and a piece of mesh to ...	19-7-2021 at 14:27 by: Twospoons
Passivate Copper for High Temperature Resistance Because copper has a high conductivity it will need to be much thinner or much longer than the equiv ...	13-7-2021 at 17:25 by: Twospoons
DIY Low Temperature Refractory Plaster/Cement? Why are you so worried about aluminium? You know its everywhere - in rocks and soil, in most glazes, ...	13-7-2021 at 15:42 by: Twospoons
DIY Low Temperature Refractory Plaster/Cement? [rquote=662817&tid=157699&author=VeritasC&E]Does anyone know if I can put two dimmers in ...	13-7-2021 at 14:08 by: Twospoons
DIY Low Temperature Refractory Plaster/Cement? I'd start by looking at either phosphate bonded or silicate bonded systems. I dont have a recipe, bu ...	11-7-2021 at 18:12 by: Twospoons
thermoelectric cooling bath [rquote=662473&tid=157673&author=mr_bovinejony] Has anyone else seen these things? They're p ...	4-7-2021 at 17:11 by: Twospoons
Depositing a layer of Cu on perlite Are you more interested in the chemistry or the water purification? - because if the end result is a ...	24-6-2021 at 18:52 by: Twospoons
Lost 5 L HNO3 stored in HDPE Kanister I had the same experience many years ago. 10 litre HDPE container with a pinhole leak in a seam. Luc ...	6-6-2021 at 13:32 by: Twospoons
Any use for broken/crushed quartz glass from tubes - or ULTRA high output UVC bulbs - 12-16KW/bulb? [rquote=660938&tid=157531&author=Fyndium]Household mains is not even able to supply single o ...	30-5-2021 at 14:37 by: Twospoons
Any use for broken/crushed quartz glass from tubes - or ULTRA high output UVC bulbs - 12-16KW/bulb? Melt cast them into a thick disk and then grind a parabolic primary mirror for a telescope. The very ...	29-5-2021 at 02:02 by: Twospoons
Ideas for Engineering In-Demand Lab Equipment [rquote=660792&tid=157522&author=LabDIRECT] My first thought was a heating mantle/hot pla ...	26-5-2021 at 19:22 by: Twospoons
Red Cabbage pH test For my daughters 7th birthday (a long time ago) we had a harry potter theme. Red cabbage was centra ...	20-5-2021 at 20:12 by: Twospoons
Does anyone have experience with silicon wafers? So you want to invest half a million bucks into equipment to make your own chips? The closest I'v ...	19-5-2021 at 20:37 by: Twospoons
how would it change if world population went to 500m? World pop was ~500 million around 1600AD. So theres some clues there. Of course we have a lot more k ...	16-5-2021 at 02:07 by: Twospoons
wall wart as power supply for electrolysis TBH you'd be better off investing in a proper variable bench power supply. It will (should) be more ...	14-5-2021 at 18:44 by: Twospoons
Flashlight power and grow light power I saw a paper once that suggested broadband lighting was better for plants. The study found that so ...	2-5-2021 at 13:53 by: Twospoons
Low resistance electrolytic cell divider [rquote=656703&tid=157195&author=goldberg] U-shaped tube filled with KCl solution gelled by ...	20-3-2021 at 20:11 by: Twospoons
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