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Magnettic stirring is surprising
You are probably seeing two effects:
1] at faster speeds there will be a thicker film of liquid bet ...
14-4-2025 at 17:54
by: Twospoons
Looking for replacement stopcock
I could probably just get our machinist to make one out of acetal or UHMPE. That might be the simple ...
6-4-2025 at 13:59
by: Twospoons
Looking for replacement stopcock
I'd probably go for ptfe, just because it would be less likely to stick with salt dried all over it. ...
4-4-2025 at 19:12
by: Twospoons
Looking for replacement stopcock
We have this measuring cylinder that is meant to be part of a salt-spray test chamber - but part of ...
3-4-2025 at 18:51
by: Twospoons
Static charges from walking on carpets
Sounds like you're going to need a heel grounding strap :D - or treat your shoes with a humectant, w ...
1-4-2025 at 13:06
by: Twospoons
Help on sourcing informations and sources regarding piezoelectric materials
[rquote=699471&tid=160913&author=davidbruh917]
we want to create a mat which can directly h ...
2-3-2025 at 14:20
by: Twospoons
Anyone here have yellow LED light, and light-green paint?
Not if you just measure the yellow object. Just like if you want to measure a book you don't measure ...
25-2-2025 at 12:47
by: Twospoons
Anyone here have yellow LED light, and light-green paint?
That last statement makes no sense. Can you rephrase it?
24-2-2025 at 17:02
by: Twospoons
Vacuum pump repair help
I would go with a screw extractor, as Sulaiman suggested. They're cheap enough and you should find a ...
24-2-2025 at 12:33
by: Twospoons
Homebrew adjustable switched PSU
"The Art of Electronics" by Horowitz and Hill is a very good general reference book.
23-2-2025 at 20:14
by: Twospoons
Homebrew adjustable switched PSU
Electronics is a vast field - I've been doing it professionally for 35 years, and I was a hobbyist s ...
23-2-2025 at 16:03
by: Twospoons
Anyone here have yellow LED light, and light-green paint?
[rquote=699372&tid=160895&author=Neal]
That could be that reflecting yellow is never the sa ...
23-2-2025 at 12:34
by: Twospoons
Anyone here have yellow LED light, and light-green paint?
One problem you will have with this is you are limited by the phosphors used in your LCD monitor. e. ...
22-2-2025 at 19:57
by: Twospoons
Anyone here have yellow LED light, and light-green paint?
[rquote=699277&tid=160895&author=Neal]
My question is what would stop something that absorb ...
19-2-2025 at 14:48
by: Twospoons
Anyone here have yellow LED light, and light-green paint?
Oh, so you're really interested the difference between additive and subtractive primaries, wrt to co ...
18-2-2025 at 20:07
by: Twospoons
Anyone here have yellow LED light, and light-green paint?
This idea that red+green+blue = white is a very anthropocentric thing - because human eyes have rece ...
18-2-2025 at 18:57
by: Twospoons
Anyone here have yellow LED light, and light-green paint?
The first white LEDs were made using a blue LED and a yellow phosphor, making a rather bad 'whitish' ...
18-2-2025 at 13:17
by: Twospoons
Homebrew adjustable switched PSU
Perhaps you are beginning to understand why electronic engineers ( like me - 35 years experience) pr ...
17-2-2025 at 15:18
by: Twospoons
How to make a smoke match or smoke paper
Try cotton wick soaked in potassium nitrate (and dried, of course). It will smoulder steadily for qu ...
6-2-2025 at 21:13
by: Twospoons
What type of thermistor is this in my freezer?
A really close-up pic of the sensor would be more useful - can barely make it out in the first pic.
2-2-2025 at 19:09
by: Twospoons
What type of thermistor is this in my freezer?
Your measurements show a resistance of just under 1 ohm - or is that typo? If not then your measur ...
1-2-2025 at 19:08
by: Twospoons
What type of thermistor is this in my freezer?
Resistance readings like that would be indicative of a thermocouple. Try using your meter in mV mode ...
1-2-2025 at 12:36
by: Twospoons
Exotic thermites & analogs
Has anyone tried using ironsand in a thermite? My local source is roughly 80% magnetite, with the ba ...
6-1-2025 at 16:06
by: Twospoons
Homebrew adjustable switched PSU
Buck converters usually rely on some form of duty cycle modulation for control - either fixed freque ...
4-1-2025 at 12:47
by: Twospoons
Homebrew adjustable switched PSU
I was thinking about your control loop last night, and theres a very strong possibility your circu ...
31-12-2024 at 09:39
by: Twospoons
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