Polarizing Filter Stress Demonstration Apparatus Gifts Four-times enlarged premium ear model

Four-times enlarged premium ear model with five separable sections exposes detailed outer

75-inch analog-to-digital converter samples and quantizes a continuous input into a binary digital output for student visualization

sweat glands

Jumbo three-dimensional frog dissection model with keycard demonstrates amphibian anatomy and organ systems for detailed vertebrate teaching

Polarizing Filter Stress Demonstration Apparatus Gifts Four-times enlarged premium ear modelBuilt 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.