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DIY Pirani vacuum pressure gauge electronics
[rquote=647579&tid=156416&author=Metallophile]
It seems like the filament would need to hav ... |
28-10-2020 at 08:14
by: wg48temp9 |
Light pollution - not just the bane of astronomers and sea turtles
In Florida some tree frogs use locations near or on street lights, window lights or light signage to ... |
28-10-2020 at 07:52
by: wg48temp9 |
DIY Pirani vacuum pressure gauge electronics
My four faulty Inficon BPG40X Bayard-Alpert Pirani combination gauges arrived today. They all have ... |
28-10-2020 at 06:44
by: wg48temp9 |
Oil lock up of rotary vane vacuum pumps
I recently won four faulty vacuum sensor heads.
Inficon BPG40X Bayard-Alpert Pirani combination g ... |
26-10-2020 at 04:37
by: wg48temp9 |
eBay alerts sellers on UK & EU ecommerce VAT reforms
Although I took full advantage of the low cost items from China, it seemed crazy that I did not hav ... |
24-10-2020 at 10:59
by: wg48temp9 |
Electric stove for metal casting?
Junk_Enginerd (previous post) had me worried that to anneal cast iron would require a soak of days. ... |
23-10-2020 at 07:24
by: wg48temp9 |
Electric stove for metal casting?
The metal tube mineral insulated elements are designed to work with a relatively cool pan compared t ... |
21-10-2020 at 09:25
by: wg48temp9 |
Oil lock up of rotary vane vacuum pumps
Heptylene: Thanks for the good advice. I have taken all kinds of oil filled machines apart ranging ... |
19-10-2020 at 14:47
by: wg48temp9 |
Oil lock up of rotary vane vacuum pumps
[rquote=646616&tid=156334&author=Bezaleel]Old oil in pumps is one issue. (It also tends to f ... |
18-10-2020 at 17:06
by: wg48temp9 |
I finally won a cheap difussion pump
[rquote=646659&tid=156141&author=Dr.Bob]I would guess that the silicon oil has a pretty uniq ... |
18-10-2020 at 01:02
by: wg48temp9 |
I finally won a cheap difussion pump
[rquote=644384&tid=156141&author=1KEE]BTW I’ve always wanted to find a glass Hg diffusion ... |
17-10-2020 at 05:01
by: wg48temp9 |
Everyone's selling water (hydrates)
[rquote=646643&tid=156336&author=unionised]It's actually worse than the OP suggests.
For ex ... |
17-10-2020 at 04:50
by: wg48temp9 |
Aluminum oxide (sapphire) glassware?
Aluminium oxide is used as a ceramic in lots of things magnetrons (the pink purplish ceramic that do ... |
17-10-2020 at 04:37
by: wg48temp9 |
1,3,3,5-Tetramethyl-1,1,5,5-tetraphenyltrisiloxane
My 704 diffusion pump oil arrived today from Lithuania about one month since it was ordered, £45 f ... |
17-10-2020 at 04:04
by: wg48temp9 |
Oil lock up of rotary vane vacuum pumps
My vacuum pump is a Pfeiffer DUO 2.5 dual stage it frequently will not start. After struggling with ... |
16-10-2020 at 07:03
by: wg48temp9 |
No one will give me experience, so I will make experience myself, starting from the bottom
At one interview for an electronics job the interviewer asked why I thought he should give me a jo ... |
15-10-2020 at 14:40
by: wg48temp9 |
The colour brown is weird
[rquote=646482&tid=156324&author=itsallgoodjames]I don't really see what this has to do with ... |
14-10-2020 at 08:32
by: wg48temp9 |
The colour brown is weird
Here is a curious youtube clip about the weird colour brown actually being
the colour orange.
htt ... |
14-10-2020 at 08:17
by: wg48temp9 |
Leaded glass in light bulbs
[rquote=646406&tid=156306&author=Clear_horizons_glass]So in your experience lead glass requi ... |
13-10-2020 at 14:04
by: wg48temp9 |
Leaded glass in light bulbs
I have examined the glass to metal seals and evacuation tubes of various light bulb. I have also w ... |
12-10-2020 at 18:08
by: wg48temp9 |
Mercury in Canada
[rquote=646297&tid=156300&author=Metallophile][rquote=646287&tid=156300&author=wg48t ... |
12-10-2020 at 07:16
by: wg48temp9 |
Mercury in Canada
[rquote=646275&tid=156300&author=B(a)P]I get 3 mm ones and they have about 0.5 g.
The ones ... |
12-10-2020 at 01:36
by: wg48temp9 |
EMP device for pesky drones
[rquote=646041&tid=156265&author=yobbo II]
Thesis-2008-Sarkar https://repository.lboro.ac.u ... |
8-10-2020 at 08:08
by: wg48temp9 |
Chemical colour references
and a useful file on white balancing algorithms
[file]83604[/file] |
6-10-2020 at 22:46
by: wg48temp9 |
Chemical colour references
[rquote=645928&tid=156268&author=pantone159]Darren L. Williams et. al., 'Beyond lambda-max: ... |
6-10-2020 at 22:26
by: wg48temp9 |
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