A black oily magnetic liquid forms strange spikes when a magnet is applied. Ferrofluid is a bizarre fluid that is magnetic made of nano sized magnetite particles contained in micelles in a mineral oil base.
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A motor driven hexagonal mirror spreads a green laser beam in the horizontal direction onto my hand.
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I arranged two mirror galvanometers to give two dimensional control of a 10mW HeNe laser beam. “Continue reading” for further information and another 9 photos. Continue reading
Laser galvanometer scribbles from discarded pen recorder from dumpster diving at the Physics Dept. Yes, it looks two dimensional as I moved the camera in a circle during the exposure. “Continue reading” for more galvanometer information. Continue reading
I made this as I thought I may need something to make joins for use in a vacuum that may get red hot. Epoxy and plain or silver soldering would not do. It uses a 6 V 90 A transformer and is able to spot weld a variety of mostly thin metal sheets.
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Using liquid nitrogen with a Peltier effect device to generate a massive 45 mW of power with a temperature differential.
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This homopolar motor has 4 components and takes seconds to make. Running here at 5800 RPM. It ran for 2:35 minutes once the power is off because the bearing is only a point with much of the weight taken off by gravity.
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My sentimental favourite power supply was made in 1971 and was developed over the years. It appeared in the local newspapers 8 times as a backdrop to photos about two of four state wide talent quest prizes I won between 1970 and 1973.
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A microwave oven transformer can be used for a powerful low voltage supply.
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I made this electronic art piece in the early 1980’s inspired by a sound only version in a local art gallery.
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