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Mathematics and electronics experiment with chaotic oscillator
Ohhh... [i]way[/i] too many years ago I played with this on a real live [b]analog[/b] computer - pat ... |
25-4-2010 at 13:53
by: densest |
Nitric Acid Synthesis
The oxygen concentrator/generators are usually retired for financial/accounting reasons, so the down ... |
25-4-2010 at 13:27
by: densest |
Benzene synthesis
Sort-of-on-topic: I heard about a company in Houston which is using [b]large[/b] plasma reactors to ... |
25-4-2010 at 13:21
by: densest |
Electrolysis power supply
Very nice!
Are you going to publish PCB layouts or sell etched PCBs? They're the biggest
hurdle ... |
24-4-2010 at 12:55
by: densest |
CS2 prep in microwave
Agreed, again... do the engineering and then do a reality check! Finding out that corrosive gases ch ... |
20-4-2010 at 16:12
by: densest |
CS2 prep in microwave
[rquote=176098&tid=13605&author=watson.fawkes]That full power field, it's a bitch. And you r ... |
19-4-2010 at 16:39
by: densest |
CS2 prep in microwave
@watson.fawkes - Agreed! Some of the meters look to be more useful & competently designed: decad ... |
19-4-2010 at 09:15
by: densest |
The short questions thread (2)
@ephoton - if you're having good luck with Chinese glass, good for you. You may be dealing with some ... |
18-4-2010 at 11:08
by: densest |
CS2 prep in microwave
@watson.fawkes - googling on "microwave oven leakage" shows a number of radiation meters from $10 to ... |
18-4-2010 at 10:57
by: densest |
mercury thermometers
@ephoton - I think that watson.fawkes suggested putting a small amount of silicone oil in the glass ... |
18-4-2010 at 10:50
by: densest |
mercury thermometers
@watson.fawkes - yes, all of that could work quite well - the carrier board & molding suggestion ... |
18-4-2010 at 10:01
by: densest |
Eponymous lab stuff
I like this kind of information - history can teach a lot, even if most of it is "don't [i]do[/i] th ... |
18-4-2010 at 08:39
by: densest |
Extracting zirconyl chloride from roll on antiperspirant
@blogfast - yes, the old G works well given time.  I got a small clinical
centrifuge for under $1 ... |
18-4-2010 at 08:37
by: densest |
Extracting zirconyl chloride from roll on antiperspirant
Since you've tried bleach, perhaps something like stronger like TCCA applied carefully might do it, ... |
17-4-2010 at 19:44
by: densest |
mercury thermometers
@panache - do you find the thermocouples are consistent from unit to unit? I read at the Omega websi ... |
16-4-2010 at 11:19
by: densest |
ChemicalsRUs and KaiChem buying
FWIW, chemicalsrus.com seems to have disappeared. Oh well.
|
15-4-2010 at 16:53
by: densest |
NMP - Purification - Ideas?
@panache - flux is the key to soldering copper, steel, aluminum, and any other metal forming an oxid ... |
15-4-2010 at 16:11
by: densest |
Production of ultraviolet in 300-315 nm range?
This report http://www.ncbi.nlm.nih.gov/pubmed/20302573 has a clinical trial of UVB LEDs for psorias ... |
14-4-2010 at 16:20
by: densest |
Lead Safety Question
In Public Health Reports Vol. 115 Nov/Dec 2000 pp 521-529, by Lanphear et al, [url]http://www.ncbi.n ... |
12-4-2010 at 15:32
by: densest |
Lead Safety Question
@unionised - Yes, the glasses are still on the market, and yes, lead does leach out in substantial q ... |
10-4-2010 at 12:50
by: densest |
Anyone ever built an overhead stirrer?
For this sort of application you want a "gearmotor". Little electric motors want to go very fast - m ... |
7-4-2010 at 19:24
by: densest |
Toluene and KNO3
@hissingnoise - you're quite right! It's even in the same book a few pages down. I'll see if I can r ... |
5-4-2010 at 13:28
by: densest |
Toluene and KNO3
"The Chemistry of Powder and Explosives", Tenney L. Davis, 1941-1943 on pp 141-153 shows the 3-step ... |
5-4-2010 at 09:36
by: densest |
Anyone good at glass work?
@ninefingers - The National brand torches sold by flameworking shops cost about $100. Dunno if that ... |
23-3-2010 at 09:29
by: densest |
FOR SALE
A reasonable, legal way of getting surplus materials or equipment "to a good home" would really be a ... |
3-3-2010 at 21:10
by: densest |
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