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Where can I get penicillium molds for making penicillin?
Make sure you get the right one : https://en.wikipedia.org/wiki/Penicillium
3-1-2022 at 21:50
by: Twospoons
How to remove these incrustations? Cleaning a GPU heatsink
The problem with any chemical cleaning method is that you are going to have to remove every trace of ...
16-12-2021 at 11:00
by: Twospoons
Shooting oxygen tank shows fire and no fuel ??
[rquote=668711&tid=158184&author=yobbo II]

It would take a mighty powerful gun to penetra ...
15-12-2021 at 13:56
by: Twospoons
Shooting oxygen tank shows fire and no fuel ??
The steel is the fuel. The bullet impact will inject hot steel fragments into the pure 200bar O2 atm ...
13-12-2021 at 11:24
by: Twospoons
A high-temperature mini-furnace for temperatures above 2000 C.
A laser is a rather inefficient way to put heat into bulk material. CO2 lasers are about 10% wall-pl ...
6-12-2021 at 23:49
by: Twospoons
A high-temperature mini-furnace for temperatures above 2000 C.
I'd put the graphite crucible inside a zirconia crucible for a first layer of insulation. Vacuum ...
2-12-2021 at 14:10
by: Twospoons
A high-temperature mini-furnace for temperatures above 2000 C.
Of course that would work - but that wasn't your original question was it? Making a graphite heatin ...
2-12-2021 at 11:18
by: Twospoons
A high-temperature mini-furnace for temperatures above 2000 C.
Ideally you want to modify the oven by inserting a circulator or isolator between the magnetron and ...
1-12-2021 at 19:54
by: Twospoons
A high-temperature mini-furnace for temperatures above 2000 C.
[rquote=667992&tid=158143&author=Jenks] What I don't understand about the above furnaces is ...
1-12-2021 at 11:33
by: Twospoons
Electrostatic generator from Alpha,or Beta emitters!
Yes, it should work. Am 241 and tritium come to mind as most accessible. With an Alpha decay energy ...
20-11-2021 at 20:41
by: Twospoons
Hello and help for lightsensitive paint
Start here: https://en.wikipedia.org/wiki/Photopolymer
That will give you a broad overview of the c ...
11-11-2021 at 12:32
by: Twospoons
Smokeless Rocket Propellant
You need to build a strand burner so you can run tests to work out the burn rate coefficients for yo ...
11-11-2021 at 12:21
by: Twospoons
Hello and help for lightsensitive paint
What you are looking for is a photocured polymer - quite different from a silver photographic emulsi ...
11-11-2021 at 01:25
by: Twospoons
copper clad aluminium wire
[rquote=665996&tid=157996&author=MadHatter]
The coaxial I run to the outdoor antenna is RG- ...
8-10-2021 at 12:59
by: Twospoons
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
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