Monday 29 July 2013

Dana Wrong - Bad Science in 1837 System of Mineralogy

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James Dwight Dana & Danalite from Rockport, Essex County, Massachusetts
mineral photo Rob Lavinsky

"The usual method of observing the polarity of turmaline is to place the heated crystal on a brass support which turns on a pivot like a magnetic needle. By presenting the poles of a magnet it will be found that the north pole of a magnet will attract one extremity of the crystal and repel the other." This is wrong. A magnet has no such effect on electrically charged bodies.

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Unrelated to this post, below is an example of
eclectic science esoterica 

by GFCL btr
A Manometer

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WARNING - Many subjects outlined within this site are extremely dangerous and are provided here for information only. Please don`t experiment with high voltages or chemicals unless you are fully conversant with safe laboratory practices. No liability will be accepted for death, injury or damage arising from experimentation using any information or materials supplied.