Half-Size Human Circulatory System Model, Compact Gifts_Bar this acrylic light guide traps

this acrylic light guide traps an injected ray-box beam by total internal reflection

Bulk 144-pack of pre-cleaned 75 x 25mm glass microscope slides features frosted labeling ends and ground polished edges for high-volume teaching labs

5 newtons for measuring small forces during spring-law and tension-force classroom investigations

Drops a dense object and a feather together inside a 20-inch evacuated glass tube

Half-Size Human Circulatory System Model, Compact Gifts_Bar this acrylic light guide trapsSized for compact classroom display, the half size circulatory model traces arterial and venous pathways from heart to peripheral capillaries.