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James Webb Space Telescope - replaceable mirrors?
YT channel Anton Petrov has all your answers and more. As does DrBecky (I can't remember her yt hand ... |
27-8-2022 at 19:20
by: j_sum1 |
What happened to NileRed, NurdRage, Chemplayer and Doug?
[color=blue]Please no trolling or unfounded storytelling. I split the thread since the discussion o ... |
22-8-2022 at 20:25
by: j_sum1 |
What yields when preparing Nitric Acid from Salts?
FWIW, I have experienced a greater problem with foaming using KNO3 than NaNO3.
Annoying since the s ... |
20-8-2022 at 18:26
by: j_sum1 |
HELP! EU/DE/FR: Impending infrastructural apocalypse and possibility of civil war
Interesting perspective, Organikum.
My thought is that to treat every sanction as a form of blackma ... |
19-8-2022 at 03:55
by: j_sum1 |
Looking for ideas
If you can get aluminium and magnesium powders and a range of oxides, thermites can be interesting. ... |
18-8-2022 at 03:29
by: j_sum1 |
Evansville, IN explosion.
Yeouch!
No identified cause yet. Apparently there was a similar explosion about 5 years ago, the ... |
10-8-2022 at 16:08
by: j_sum1 |
Myth of Streching Space
Thanks WG48.
I am insufficiently knowledgeable to critique the statement properly or even to unde ... |
8-8-2022 at 20:41
by: j_sum1 |
HELP! EU/DE/FR: Impending infrastructural apocalypse and possibility of civil war
On the issue of fusion, there is still an awful lot of technological obstacles to be overcome before ... |
6-8-2022 at 22:07
by: j_sum1 |
HELP! EU/DE/FR: Impending infrastructural apocalypse and possibility of civil war
This was all predicted.
Those who wanted to talk about were labelled as cranks and science deniers ... |
5-8-2022 at 22:26
by: j_sum1 |
Ways to isolate lead from its alloy state?
If it is already pure, then there is probably little point refining. Simply react with nitric acid a ... |
5-8-2022 at 02:59
by: j_sum1 |
Ways to isolate lead from its alloy state?
Do you have any idea what it is alloyed with?
Two refining processes come to mind. Both I would ... |
4-8-2022 at 21:16
by: j_sum1 |
Readily Available Chemicals Website: Version 2
Chemplayer has a procedure for making a mixed salt of KCN and NaCN that he (they) use for a variety ... |
2-8-2022 at 21:08
by: j_sum1 |
Identifying lead compositions?
There is an awful lot that will dissolve in lead. And all will have the effect of making the alloy ... |
1-8-2022 at 17:32
by: j_sum1 |
Is the dissociation of acetic acid dependent on temperature?
You could always measure pH as a function of temperature.
From the pH, calculating the amount of di ... |
29-7-2022 at 22:20
by: j_sum1 |
Bitumenous Membrane – comercial product with unusual properties
I hope to get into the lab this weekend. I will do some tests (which will probably take a bit of ti ... |
25-7-2022 at 14:24
by: j_sum1 |
Tour My Lab
That is such good news, B(a)p.
Congratulations. |
24-7-2022 at 02:14
by: j_sum1 |
Brown dead patches in my lawn
Could easily be dog pee.
And it would not need to be unusually concentrated. Very dry soil and quic ... |
21-7-2022 at 01:22
by: j_sum1 |
Rhodium(III)Sulfate
What is your source of rhodium?
I presume you are working at a very small scale. |
20-7-2022 at 02:53
by: j_sum1 |
Conversion of Manganese Sulphate to Acetate
[rquote=675214&tid=158759&author=SplendidAcylation]I feel like a bit of an idiot here, but c ... |
19-7-2022 at 19:14
by: j_sum1 |
Bitumenous Membrane – comercial product with unusual properties
[rquote=675151&tid=158756&author=Tsjerk]Could you mix a weighed amount with water and weigh ... |
16-7-2022 at 17:54
by: j_sum1 |
Bitumenous Membrane – comercial product with unusual properties
This is mostly a question to satisfy my curiosity.
I am working with a product that is used to ap ... |
15-7-2022 at 19:34
by: j_sum1 |
Countertop dishwasher for cleaning lab glassware?
I have not had great experiences with benchtop models. One school I worked at had one and it was a ... |
14-7-2022 at 19:40
by: j_sum1 |
Sodium Borohydride Group Buy
The original group buy that started this thread finished some time ago.
If there is interest in a n ... |
6-7-2022 at 19:30
by: j_sum1 |
making H2SO4?
Brominerain, there is a sticky on this topic and also a wiki page (I think).
A lot depends on what ... |
5-7-2022 at 00:12
by: j_sum1 |
Making bromine from Bromchlor-5,5-dimethylimidazolidin-2,4-dion
Tdep has done this on Extractions and Ire.
A full procedure and write up was done by len1 and publi ... |
26-6-2022 at 16:14
by: j_sum1 |
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