Activities/Turtle Art/Using Turtle Art Sensors: Difference between revisions

Revision as of 01:55, 4 December 2010 view source Tonyforster (talk \| contribs) 2,486 edits →The XO as an audio amplifier ← Older edit		Revision as of 02:02, 4 December 2010 view source Tonyforster (talk \| contribs) 2,486 edits →The XO as an audio amplifier Newer edit →
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	The diode is still required. The original cat's whisker diode was made with galena crystals. [[http://en.wikipedia.org/wiki/Cat%27s-whisker_detector]]		The diode is still required. The original cat's whisker diode was made with galena crystals. [[http://en.wikipedia.org/wiki/Cat%27s-whisker_detector]] Other materials are iron pyrite ("fool's gold", iron disulfide), silicon, molybdenite (MoS2), and silicon carbide (carborundum, SiC). It is also possible to use a rusty razor blade (iron oxide).

	==Links==		==Links==