Description

low-consumption fan motor

Nine-model set traces embryonic and fetal development across the full gestational period

and ray-tracing demos

Designed to measure Planck's constant through the photoelectric effect

and a month-labeled base for tracking orbital positions through the year

Double Concave Acrylic Lens, 86mm, 20cm Focal Length Glassware low-consumption fan motorAcrylic double concave lens at 86mm length and 20cm diverging focal length, the lightweight body producing virtual upright reduced images for safer per desk divergence demonstrations.

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Double Concave Acrylic Lens, 86mm, 20cm Focal Length Glassware low-consumption fan motor

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