A unique mechanical design aspires to remove heat from this LED light bulb’s insides, but you still need to keep external ventilation in mind.

Before a spectrometer can do any useful work, it needs to be calibrated to identify wavelengths correctly. This is usually done by detecting several characteristic peaks or dips in a well-known ...

USM stands for Ultrasonic Autofocus Motor. These lenses offer manual focus override and fast, smooth and comparatively quiet ...