A colour-changing compound that can precisely indicate the ‘enantiomeric excess’ (ee) of chiral molecules could provide a convenient method to measure pharmaceutical purity. Many molecular systems in ...

Up, down, to the left and to the right…. – the servo hydraulic testing machine HB 100 of Zwick in Ulm considers all possibilities and performs both tensile/compression and torsion tests on helical ...

Most textbooks and guides do not clearly distinguish between types of helical compression springs when giving equations for solid height of the spring. Fortunately, exact values of solid height ...

Customized machined springs let designers integrate multiple features into one piece. The springs can be designed to address requirements for rate, reactions at desired deflections, combined rates, ...