Dismantled loudspeaker. This is a device that is designed to convert electrical signals into sound waves. The two fixed components are the permanent magnet (black, lower centre) and a metal framework (the basket, grey). The magnet surrounds the voice coil (orange, centre). This is an electromagnetic coil that vibrates relative to the magnet when the electric sound signal is sent through it. The coil is held in place by the flexible spider structure (corrugated, red), but is also attached to the diaphragm (black). As the coil vibrates, it moves the diaphragm, producing the air pressure waves that are called sound waves.
Science Photo Library was founded in 1981 by Michael Marten, one of the authors of "Worlds Within Worlds", a book exploring different ways to observe the universe - from electron micrographs, to images of earthrise taken from the Apollo spacecraft. When Marten started receiving requests for the beautiful images in the book, he had an idea of setting up Science Photo Library.
Since then, Science Photo Library has continued to work alongside world acclaimed photographers and the leading science and medical experts to provide a central source of the best science and specialist imagery available. Although the collection started with scientific images, it has grown to encompass all aspects of science and their impact on everyday life.
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If you're not happy with a purchase that you made on FineArtAmerica.com, for any reason, you can return it to us within 30 days of the order date. As soon as it arrives, we'll issue a full refund for the entire purchase price. Please note - Fine Art America does not reimburse the outgoing or return shipping charges unless the return is due to a defect in quality.