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Substrate heater for vacuum chamber
I know about the BeO ceramics. If i'm making vacuum feedthroughs I'll just use glass tubing, solid w ... |
15-7-2024 at 15:28
by: Twospoons |
Building a DIY Pirani Gauge from a lightbulb
For intermediate pressure calibration a low friction piston with a set of weights can be used to cre ... |
10-7-2024 at 18:30
by: Twospoons |
Building a DIY Pirani Gauge from a lightbulb
Also be aware that the "24-bits" is misleading. With the input range set up to be 20mV full scale, t ... |
8-7-2024 at 13:03
by: Twospoons |
Building a DIY Pirani Gauge from a lightbulb
[rquote=694046&tid=160402&author=wg48temp9]
WOW 24bit A/D for under £3[/rquote]
Yeah, b ... |
7-7-2024 at 15:25
by: Twospoons |
Substrate heater for vacuum chamber
The end goal is to produce a Ti electrode with a surface coating of Ti[sub]4[/sub]O[sub]7[/sub], ide ... |
5-7-2024 at 17:39
by: Twospoons |
Substrate heater for vacuum chamber
I have this idea I want to try that requires heating TiO[sub]2[/sub] coated Ti mesh to 800C or so un ... |
4-7-2024 at 20:01
by: Twospoons |
Building a DIY Pirani Gauge from a lightbulb
Actually nichrome is a terrible choice for a temperature sensing element, as it has a Tcr an order o ... |
28-6-2024 at 21:36
by: Twospoons |
Notes on the new NurdRage video: making sulphuric acid from sulphates and oxalic acid
If the two solutions were poured in carefully as two layers (denser one on the bottom), then allowed ... |
23-6-2024 at 21:22
by: Twospoons |
Expedient and simple production of small quantities of LOX
If you want simple, then a pulse tube cryocooler is about as simple as it gets, mechanically. Not so ... |
23-6-2024 at 17:17
by: Twospoons |
Ika cmag hs7 fried circuit
I'd be looking downstream of that transformer. High chance the rectifier(s) are dead, and possibly t ... |
22-6-2024 at 20:39
by: Twospoons |
How I safely unplugged a drain using Vinegar and Baking Soda
Just be aware that PVC drain pipe is not pressure rated (usually thin walled and large diameter), so ... |
20-6-2024 at 19:42
by: Twospoons |
Ozon concentration vs. time - practical problem
Or you could treat it as an equilibrium, setting the 1 minute production rate equal to the 1 minute ... |
18-6-2024 at 18:00
by: Twospoons |
Solution strength for dissolving mineral impurities
Its frequently used to etch concrete to expose the aggregate. Check that section of your hardware st ... |
16-6-2024 at 14:00
by: Twospoons |
DIY melting point apparatus
[rquote=693361&tid=160348&author=wxyz] As long as your thermocouple gives [b]repeatable[/b] ... |
31-5-2024 at 14:47
by: Twospoons |
DIY melting point apparatus
[rquote=693354&tid=160348&author=Rainwater] I get accuracy and precision mixed up.
[Edited ... |
30-5-2024 at 18:29
by: Twospoons |
DIY melting point apparatus
Given the inherent non-linearity of thermocouples I'd be skeptical of claiming 0.01K accuracy with j ... |
30-5-2024 at 13:29
by: Twospoons |
Fresh eggs, wash or dont?
Just want to add, thats a lovely and well executed experiment! Would be a good one to try if your k ... |
20-5-2024 at 14:33
by: Twospoons |
Fresh eggs, wash or dont?
2 minutes on google could have saved your $20.
Eggs get laid with a thin coating called a 'bloom' ... |
19-5-2024 at 18:19
by: Twospoons |
Best way to absorb ammonia gas in an air filtration system
I fill the scrubber with ~100g of oxalic acid in about 5l of water. That seems to be good for a year ... |
5-5-2024 at 15:31
by: Twospoons |
Best way to absorb ammonia gas in an air filtration system
I built a gas scrubber using oxalic acid solution to remove the stink from rotting meat* - which I b ... |
4-5-2024 at 19:01
by: Twospoons |
ITER: A useful nuclear fusion experiment or a waste of money ?
[rquote=692601&tid=160006&author=Precipitates]
And there is certainly the argument that som ... |
18-4-2024 at 18:53
by: Twospoons |
Making rubies using microwave
You do know you can just buy them, mounted and unmounted, along with matching bearing pins? Making ... |
17-4-2024 at 15:28
by: Twospoons |
DIY spectrometer resolution
It occurs to me that a second grating oriented 90 degrees to the first grating could be used as an o ... |
14-4-2024 at 21:26
by: Twospoons |
DIY spectrometer resolution
A better explanation (Pictures!), and the solution to order overlap
https://deltaopticalthinfilm.co ... |
13-4-2024 at 16:22
by: Twospoons |
Powerful ozonizer, is it possible at home?
Like the LiIon batteries claiming 10000mAH in an 18650 cell. Complete BS.
They rely on people bei ... |
10-4-2024 at 17:18
by: Twospoons |
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