Glass Lens Set, 2", 6 Optical Types Pack Size_6 deflecting a pivoting cobalt-steel compass

deflecting a pivoting cobalt-steel compass needle inside a rectangular conductor frame to show that current generates a magnetic field

and chemistry heating applications

this advanced ripple tank ships with vibration generator

Life-size right lung separates into two parts exposing bronchial tree and alveolar structure

Five-cylinder equal-mass set at 30g each in zinc

Glass Lens Set, 2", 6 Optical Types Pack Size_6 deflecting a pivoting cobalt-steel compassGround, polished, and packaged as a single optics kit, this six lens glass set covers double convex, double concave, plano convex, plano concave, and concavo convex forms for classroom work.