Description
iron filings
forced oscillation
this Wimshurst generator builds a visible high-voltage spark
chloroplast
letting students quantify how color and finish influence heat uptake during radiation experiments
Reading Magnifier, 60mm, 20cm Focal Length Material_Acrylic iron filingsChrome plated 60mm reading magnifier extending to a 20cm focal length, the longer focal distance lowering magnification but broadening the visible area on a single page.
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