Hookes Law, set of 5 springs with different spring constants, forces required for 1cm extension are 0.25N, 0.5N, 1N, 1.5N, and 2.5N respectively, Pre-stress has been removed for accurate results, With a hook to support a weight hanger and a red arrow to indicate position
Ray box, simple, safe and sturdy source of projected light for many classic optics experiments, produces parallel convergent rays across a plane horizontal surface and the rays are intense enough to be traced in natural light. Built in solid aluminum extrusion casing, 100-240V 50/60 Hz
Bimetallic Strip Demonstration, Single Piece Non-Jointed Bimetallic Strip Of With Wooden Handle, The Metals Are Distinct And Visible. An Improved Version Of The Rivetted Form. Metals Are Copper And Steel.
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