Polarizing Filter Pair, 50 x 50mm Pack Size_2 exposing the longitudinal and transverse

exposing the longitudinal and transverse components of wave motion mechanically

letting students sweep through resonance and watch amplitude peak when drive matches natural pitch

the half-size circulatory model traces arterial and venous pathways from heart to peripheral capillaries

At a full-inch diameter

75 inches wide for torsion-balance and electrostatic-induction setups

Polarizing Filter Pair, 50 x 50mm Pack Size_2 exposing the longitudinal and transversePolaroid film 45 x 23mm sits in 50 x 50mm plastic frames as a matched pair, transmitting maximum light when their axes align and nearly extinguishing it when crossed at 90 degrees.