Abstract: Conventional optical lenses only have one focal point. Whereas compound lens systems with multiple lenses and mechanical actuators are used in modules to focus on near and far objects.

Abstract: Similar to multi-frequency techniques in eddy current (EC) and magnetic flux leakage (MFL) testings, the harmonic evaluation technique using a square wave excitation field improves the ...

Before clean power became centered on sources of energy like wind and solar, a French inventor by the name of Pierre-Simon Girard was fascinated by the idea of using power generated by the sea. In ...

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AccuWeather Lead Hurricane Expert Alex DaSilva speaks on the recent development of a tropical wave that heads into the Caribbean with thunderstorms. Trump tells Democrats to ‘do something’ ahead of ...

This video shows how to make Scottish Square Sausage Rolls - a quick and easy recipe using Lorne (square) sausage and ready-rolled puff pastry. These sausage rolls are perfect for lunchboxes, party ...