Soda Glass Pneumatic Trough with Concave Base, 7.8 x 4 inch Glassware_Glass Bottles used in step-up and step-down

used in step-up and step-down ratio demonstrations of Faraday's law

ten 6 by 4-inch acrylic plane mirrors arrive as a 10-pack

Finger-grip handle keeps fingers clear of heat on this plated spring steel wire test tube clamp when holding tubes above a burner flame during classroom demonstrations

Used to supply rechargeable DC power for circuit experiments

and resonance through a 6V motor driving cams and spring actuators across four springs and two hanging masses on a 19-inch frame

Soda Glass Pneumatic Trough with Concave Base, 7.8 x 4 inch Glassware_Glass Bottles used in step-up and step-downSoda glass pneumatic trough with concave base measures 7. 8 inches diameter by 4 inches tall for gas collection over water.