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Thoughts On Anodes
It actually works better than you'd expect. I tried a very crude setup with a ferrite magnet under ... |
21-8-2006 at 14:39
by: Twospoons |
Microwaved foods
Its the same old story of perceived risk vs actual risk. People see 'microwave' = 'radiation' = 'Ba ... |
21-8-2006 at 14:34
by: Twospoons |
Thoughts On Anodes
not_important, you mis-understand. There are no moving parts. Its a bit like this :[url=http://en. ... |
20-8-2006 at 21:27
by: Twospoons |
Thoughts On Anodes
If you want a self pumping electrode assembly try to imagine this: Co-axial electrodes supported by ... |
20-8-2006 at 15:29
by: Twospoons |
Sleeping on a floating bed?
I've used the Ansoft 3d FEA package in a previous job - we had the full version on "evaluation" for ... |
17-8-2006 at 22:19
by: Twospoons |
Easy Fe2O3
Duh. Should have checked my refs. Fe3O4 (which is actually FeO.Fe2O3 IIRC) was made using a 2:1 mol ... |
16-8-2006 at 17:26
by: Twospoons |
Easy Fe2O3
[quote][i]Originally posted by 12AX7[/i]
To get Fe2O3 you need to wash, dry and dehydrate (calcine) ... |
16-8-2006 at 14:42
by: Twospoons |
BUTYL RUBBER from CAULK
It might be better to go the opposite direction and thin the whole lot with a solvent ( ordinary pai ... |
15-8-2006 at 23:56
by: Twospoons |
AC power supply for experiments
Better still use quasi-resonant switching - no inductive kick, greatly reduced switching losses, ver ... |
10-8-2006 at 20:30
by: Twospoons |
Sleeping on a floating bed?
Oooo! Halbach arrays are so cool. I'm going to have to model that too now, damn you!
Edit: See ... |
9-8-2006 at 18:33
by: Twospoons |
Sleeping on a floating bed?
Just for a giggle (because I'm particularly bored today) I modelled the repulsion with a magnetics F ... |
9-8-2006 at 17:55
by: Twospoons |
Sleeping on a floating bed?
Seems to me the photo posted is a fake. Looks like the designer has only made a 100:1 scale model - ... |
8-8-2006 at 14:48
by: Twospoons |
AC power supply for experiments
Ever seen the heater element on a soldering iron? They can be glowing with only 20W input. Put hea ... |
7-8-2006 at 16:56
by: Twospoons |
AC power supply for experiments
Your efficiency measurement sounds way out to me. How exactly did you do your measurements? You me ... |
7-8-2006 at 14:30
by: Twospoons |
AC power supply for experiments
Here's the short version :
Yes, use an H-bridge. There are some very nice fully integrated H-bri ... |
3-8-2006 at 19:30
by: Twospoons |
Nickel electroplating
Do you know if the same bath will work for plating onto brass or copper?
I thought NiCd or NiMH bat ... |
2-8-2006 at 19:51
by: Twospoons |
Wanna be invisible
[quote][i]Originally posted by franklyn[/i]
it may be possible to create a suit for a man or
an ... |
1-8-2006 at 14:33
by: Twospoons |
Thoughts On Anodes
Sounds like the chem industry is like the electronics industry: if you want cheap choose India/China ... |
25-7-2006 at 22:32
by: Twospoons |
Homemade Ph Indicator from purple cabbage
It works with pretty much any dark purple flower. I've used pansies and violas (viola tricolor), an ... |
19-7-2006 at 22:33
by: Twospoons |
Id like to make a HUGE smoke cloud
I've always made smoke flares for the kids simply with KNO3 and sugar, with about 10% sulphur as wel ... |
17-7-2006 at 20:08
by: Twospoons |
Suggestions for high temp oil bath?
I was under the impression that brake fluid was quite toxic, even when cold.
In my kitchen I have a ... |
16-7-2006 at 19:51
by: Twospoons |
Measuring Temperature for Small Amounts of Substance
I agree with 12AX7 - the sensing tip on a thermocouple is usually only 1-2 mm in diameter, and the w ... |
13-7-2006 at 19:57
by: Twospoons |
Obscure antiquated or household drugs
Up until 20 years ago, one of the local pharmacists in Auckland (New Zealand) was still making cough ... |
5-7-2006 at 21:13
by: Twospoons |
High Temperature Dark Body
Silicon carbide is what you want. Its emissivity is high all the way into the deep IR, and stays hi ... |
4-7-2006 at 22:37
by: Twospoons |
cheapest way to pure oxygen
The hard part is getting the adsorber, the rest is just a compressor and a couple of valves. I did ... |
27-6-2006 at 21:50
by: Twospoons |
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