US$ 39.95
Used to produce concentric Newton's rings under monochromatic light
producing the nearly uniform field used to calibrate magnetic sensors and verify the Helmholtz geometry
and electromagnet leads
Used to demonstrate rotational-to-linear motion conversion
and phase-change experiments
Reading Magnifier, 50mm, 12cm Focal Length Capacity_125mL Used to produce concentric Newton'sChrome plated metal framed 50mm reading magnifier with a 12cm focal length, sized for fine print reading and convex lens image formation work in introductory optics.