Variable Angle Glass Prism, 25° x 25° x 130° Material_Hardwood and aluminum via four engraved

and aluminum via four engraved strips radiating from a heated 4

5mm copper wire on a clear acrylic base support side-by-side comparison of how loop count multiplies the on-axis magnetic field at fixed current

place value

4 inches tall and 3 inches in diameter

Binaural stethoscope with PVC tubing provides clear heart and lung sound detection for medical and nursing education

Variable Angle Glass Prism, 25° x 25° x 130° Material_Hardwood and aluminum via four engravedPairs a 25 apex with 25 x 25 x 130 geometry on a glass prism, the apex continuing the systematic angle versus deviation series for comparing nonlinear deviation growth.