Soda Glass Pneumatic Trough, 15 x 10cm Capacity_50mL supplying the third-color signal line

supplying the third-color signal line for breadboarded circuits where black and red rails are already assigned

supplied with four riders

this double-convex converging lens gathers parallel light to a single focal point for bright image-formation demonstrations

this wool cloth is a standard accessory for electroscope and Van de Graaff work

tracking each metal's conductivity by the rate wax coatings melt from the heated end

Soda Glass Pneumatic Trough, 15 x 10cm Capacity_50mL supplying the third-color signal lineSoda glass pneumatic trough measures 15 x 10cm for gas collection over water and chemistry demonstration applications.