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adapting a domestic MW
Any size hole will radiate! You need to get down to roughly 1/20th wavelength for the radiation to ... |
4-10-2007 at 14:15
by: Twospoons |
Lucky Me
Since we're all bragging about free glassware ...
Years ago my wife was working at a med equipment ... |
2-10-2007 at 19:12
by: Twospoons |
Scrounging for mercury
Bugger all.
Bloody hard.
You want mercury tilt switches, or mercury thermometers. |
30-9-2007 at 20:51
by: Twospoons |
Aerated refractory concrete
Can you get Rockwool where you are? It is supposed to be good to 1000C - might make a good reinforc ... |
23-9-2007 at 15:50
by: Twospoons |
Sodium!
It was only a wild "blue-sky" idea. You could use an additional boiler element where the sodium col ... |
20-9-2007 at 15:42
by: Twospoons |
Sodium!
Maybe, if you got really ambitious, you could combine the Castner cell and vacuum distillation into ... |
19-9-2007 at 21:59
by: Twospoons |
Glassware in Texas - Register or Not?
On the other hand, someone who is upfront and registers, all nice and legal, is (I would have though ... |
17-9-2007 at 22:12
by: Twospoons |
tesla electric car
I'd like to add http://en.wikipedia.org/wiki/Richard_Pearse to franklyn's list. While I know of no ... |
13-9-2007 at 18:57
by: Twospoons |
Science Madness Forum BLOCKED (?)
I use two different ISPs: for work and home. Both seem to work fine. Its probably just NZ's ghastl ... |
2-9-2007 at 18:51
by: Twospoons |
Science Madness Forum BLOCKED (?)
I'm in NZ too. I've rarely had trouble accessing the forum, usually only those times everyone else ... |
2-9-2007 at 14:12
by: Twospoons |
global energy grid
Matching an audio amp to loudspeaker impedance is rather non-sensical anyway. Loudspeaker rated imp ... |
30-8-2007 at 13:55
by: Twospoons |
global energy grid
This is why factories invest in power factor correction - so that they present as close to a pure re ... |
29-8-2007 at 20:55
by: Twospoons |
Adsorption capacity of activated carbon?
Everything I've seen so far concentrates on getting good heat transfer through the carbon, and short ... |
29-8-2007 at 14:04
by: Twospoons |
increase light input to solar cells
The problem is getting rid of the waste heat. Efficiency of PV cells drops as they get hot. It is ... |
29-8-2007 at 13:53
by: Twospoons |
global energy grid
Yes, but franklyn's point is that inductance and capacitance do not dissipate power, therefore contr ... |
28-8-2007 at 21:53
by: Twospoons |
Iodine and tincture going List I
Ha. The farmstore down the road from me has 2.5% iodine tincture for sale in 1 litre bottles. I gues ... |
28-8-2007 at 20:00
by: Twospoons |
global energy grid
@franklyn: Wrong, there is still DC transmission. DC is used crossing the Cook Strait in New Zeal ... |
28-8-2007 at 19:52
by: Twospoons |
Adsorption capacity of activated carbon?
Thanks Solo. Looks like the ballpark figure is around 0.22kg/kg. |
28-8-2007 at 19:42
by: Twospoons |
Adsorption capacity of activated carbon?
I just recently became interested in solar powered adsorption refrigeration, (I'm that kind of guy). ... |
28-8-2007 at 18:10
by: Twospoons |
Stainless steel pot ok?
Search on ebay for " diamond core drill". These can be used on glass - with plenty of water for coo ... |
27-8-2007 at 19:28
by: Twospoons |
Extraction of Oxygen from air by electrolysis
The process interests me because it doesn't require compressors, or valves, or zeolite adsorbers, or ... |
23-8-2007 at 17:58
by: Twospoons |
Extraction of Oxygen from air by electrolysis
I found this rather interesting patent about extracting oxygen from air using aqueous electrolysis.
... |
22-8-2007 at 17:39
by: Twospoons |
Dammit, now I have a cybersquatter using my business name as a domain name...
Someone probably saw the registration of your business name when you were incorporated - it is usual ... |
19-8-2007 at 20:33
by: Twospoons |
iron mess to clean from rb flask
IIRC iron stains are particularly hard to remove from glass, as the iron penetrates somewhat. You m ... |
8-8-2007 at 18:08
by: Twospoons |
compressed air to store energy
For a more environmentally friendly solution, look up Vanadium Redox batteries. Uses V in H2SO4 - o ... |
7-8-2007 at 14:29
by: Twospoons |
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