Monthly Reminder, please read: Please try to stay on topic. *Off topic: religion, sports, politics, numerology, UFOs, you get the picture. Please do not...
mad_scientist@yahoogr...
Sep 1, 2004 8:32 pm
1676
I've always been interested in scientific experiments and at the moment I cannot think of one to do. I would like to do an experiment that isn't childish or...
... experiment ... By "experiment" I assume that you mean "science demonstration." Try the "advanced" ones on http://scienceclub.org/kidproj1.html And lots of...
I think someone sent a link with this as a subject but I lost it. Can you re-post? Thanks, Mike _______________________________ Do you Yahoo!? Win 1 of 4,000...
Most of you know about the doughnut shapped ceramic magnets found in stereo speakers. Dead or dying microwave ovens have 2 similarly shapped magnets as part...
Hello chemistry folks I just joined this group to share something called sungazing. I practice sungazing myself. You can read more about sungazing at this ...
I don't even know what a "TRYANNY" is. If this is something political, politics are not allowed on this list. There are plenty other places to discuss...
It sounds like you were low on Vitamin D. Sunlight stimulates the skin to produce this necessary vitamin. Any other claims of health benefits from sunlight...
Under the category of strange but true there is one documented beneficial aspect to staring at intense sources of infrared light that most of us will not have...
For those of you not on Bill Beatty's Weird Science mailing list: Swirl (flash) http://zongrila.net/swirl.htm Now don't you be gettin all Escher-esque! ...
Bill, you mentioned IR pass Lexan on a page on your website. I am having a devil of a time finding any plastics suppliers who even know what the heck I'm...
I don't normally like to be discouraging, but in this case I must be. Electricity is dangerous. Not many people realize it, but under the right conditions,...
There are commercially available lighting effects devices that LOOK alot like a jacob's ladder but are really so-called "Plasma Generators" (the plasma "bolts"...
Steve, I know you are asking Bill, but how much do you need? What color, what thickness, what transmission characteristic etc. Per memory, I've got a few...
Here's a glass-enclosed plasma Jacob's Ladder which is more suitable for display. http://www.amazing1.com/plasma.htm They also have plasma colums and...
... Well said Steve, you make some excellent points. Maybe something involving static electricity might be a better choice? A van de graff generator would be...
IR pass. Visible block. The "color" seems to be very dark purple, but I would not identify it that way. What I really need is a source. For my project, I...
Lexan is just GE's brand of polycarbonate, and polycarbonate passes IR very well. Rune ... Outgoing mail is certified Virus Free. Checked by AVG anti-virus...
... Yes, I realize that. I need IR filter plastic. Plastic that blocks visible light, and allows IR through. It needs to be high quality in that it needs to be...
Steve, Like the stuff covering the LED in your TV's remote control? Geez, there MUST be a cheap source of that material somewhere. I think RadShack used to...
Exactly! They build the front of remote controls out of it to cover the LED. If you hold it up to a very bright light, you can barely see some purple light...
Steve, You're not very likely to find a material that blocks all visible light; some red will certainly get through. If that is acceptable, then you have at...
I'll have to second that one. I have a degree in electrical engineering, and I have been zapped a few times. I am still alive due to being paranoid about the...
... Do you need a commercial supply? If you just want a reasonable pile of them, and aren't averse to some dumpster diving, you can pick up a bunch of junked...
RuneS wrote: [...] ... That actually brings up a good idea. The military has been using IR lights for a long time. You ought to be able to find some in the...
... the problem is that stuff is not built to the same criteria that I need. I also cannot rely on dumpster diving or surplus. I need a commercial supplier. ...
... Au contraire. The front of many remote controls are covered with a plastic so dark it appears black. Wrap your hand around it so no light gets around, and...
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