US$ 16.99
Snap-apart 2-inch ceramic bar magnets in a 10-pack
this premium power supply drives atomic emission demonstrations that reveal each element's characteristic spectral lines
and the triboelectric series
drawing both DC and AC simultaneously with short-circuit protection via a 0
30" Insect Collecting Net with Wooden Handle Heat & Thermodynamics_Energy Transfer & Engines Snap-apart 2-inch ceramic bar magnetsWood handled collecting net pairs a sturdy grip with fine mesh netting for classroom field trips and introductory entomology collection work.
US$ 16.99
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US$ 110.00
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