http://amasci.com/we ird/unusual/airthred .html Invisible filaments of high voltage "electric wind" are seen to disturb a thin fog layer made with warm water and dry ice. Get the HV power supply from http://amasci.com/em otor/negion.html
Beer bottle in a microwave oven. IT MELTS. No, it's not very safe. Not for kids!
That's my original oven from 1994, it's still working fine (but with paint a bit burned.) Whenever you see charred spots on your ceiling, you know that someone's been making plasma balls again.
Amazingly repulsive, yet 3 simple mirrors just create symmetrical optical geometry. A shining jewel ...made of hairy damp pulsing FLESH. More construction details at http://amasci.com/am ateur/dscope.html
see http://amasci.com/ho lo/ Scratch-holograms can be made on CD cases using a couple of thumbtacks poked through a stick. Or get fancy and use a professional compass and black painted polycarbonate. Or automate the process with a paperclip stuck into a motorized electric eraser.
Between "Genuine danger" and "Raving Safety Paranoia" there must be some sensible middle ground. Dry ice is fun. Figure out a way to handle it safely.
Buy dry ice from suppliers listed in your yellow pages phone book for about $1 per pound. Or in Seattle, get it from QFC grocery, in the seafood section.
The FLIR camera sees wet couches, cold cola, and metal mirrors. But it can't see black trash bags! "Thermal Eye" camera TSC by L3/Raytheon. Find them on eBay by searching for keywords "thermal imaging" .
No chalkboard needed: dry ice with warm metal pressed against it. We automated the process with a gearmotor slowly turning a mixing bowl. The two bowls make great sounding boards (the noise was LOUD.) Hosted by the folks at http://www.911media. org/, http://www.dorkbot.o rg/dorkbotsea/ monthly tech/art/DIY meetings.
Got glow-in-dark paint? UV keychain flashlight? Combine the two. Imagine what you could build. Get UV LEDs from All Electronics or Electronics Goldmine. Get yellow-green "Night glo" Speedball(tm) fabric screen ink from art supply stores. (This is a very early test-video of mine from last April, shot in thumbnail mode.)
Refilling the Liquid Nitrogen jacket of the superconducting magnets at work. Water mist so fine, Rayleigh Scattering makes it look blue. (or is that Tyndall Effect?) Next: b-field pattern stands my wire cutters on end.
From http://amasci.com/br ain/ website: Childhood Brain Modification. Instructions on valuable skills: how to cross just one eye, and how to speak with an echo.
A rubber band gets hot when you stretch it, and cools down when it contracts. The FLIR thermal IR camera makes this instantly visible. "Thermal Eye" camera TSC by L3/Raytheon, found on eBay by searching for "thermal imaging". Also see http://amasci.com/un ew.html for more cool stuff
![High voltage \"Air threads\"](http://img.youtube.com/vi/iLG8gKb-lyk/2.jpg "High voltage \\"Air threads\\"")
![DIY toys: Evil Santa Workshop \](http://img.youtube.com/vi/I7LOqd5XZSU/2.jpg "DIY toys: Evil Santa Workshop \")
