Polarizing Filter Stress Demonstration Apparatus Glass Color_Transparent 3mm inner diameter for blood

3mm inner diameter for blood sample collection and laboratory analysis procedures

One-inch brass ball that threads onto a pendulum string as a heavier metal counterpart to aluminum or steel balls in mass-dependent periodic-motion investigations

Life-size heart model opens into two halves to expose four chambers

exposing pulmonary and cardiac anatomy separately or together across a 16

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

Polarizing Filter Stress Demonstration Apparatus Glass Color_Transparent 3mm inner diameter for bloodBuilt to reveal stress fringes in transparent solids, this apparatus pairs two 8 inch polarizing filters in a wooden frame with four acrylic shapes that show photoelastic patterns when squeezed.