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Optically Worked Double Convex Glass Lens, 75mm Diameter, 250mm Focal Length Included_Bosshead Used to extend the curvature-vs-charge-density

SKU 35026319371
4.6
Description

Used to extend the curvature-vs-charge-density study to larger geometries

Glass-flask leaf electroscope with a brass rod and aluminum leaf

Plastic holder atop a 4

Built for invertebrate study

Optically Worked Double Convex Glass Lens, 75mm Diameter, 250mm Focal Length Included_Bosshead Used to extend the curvature-vs-charge-densityLong focal double convex glass lens at 75mm diameter and 250mm focal length, the f 3. 3 geometry stretching focal throw for distant screen projection of well formed real images.

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