"A picture is worth a thousand words." While this is undoubtedly true of the many beautiful structures that have been produced both by X-ray crystallography and more recently by NMR spectroscopy it is ...

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The common type of loudspeaker that uses a magnetic field to move a cone-shaped diaphragm. When alternating current (the audio signal) is applied to the coil, the diaphragm vibrates and causes air to ...