Campbell standard of mutual inductance
Framed Prints
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Framed Print of Campbell standard of mutual inductance
Campbell standard of mutual inductance. Mr A. Campbell designed this standard of mutual inductance in 1907-8. Two single-layer copper coils (upper and lower centre) are wound onto the outside of a marble cylinder containing a multiple-layered inner copper coil (not seen). The current passing through the inner coil induces a specific voltage in the outer coils. This phenomenon is known as mutual inductance. The Campbell standard of mutual induction was used to determine the Ohm (a unit of electrical resistance). Photographed in 1960. Science Photo Library features Science and Medical images including photos and illustrations. © NATIONAL PHYSICAL LABORATORY CROWN COPYRIGHT/SCIENCE PHOTO LIBRARY
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Media ID 6467933
1900s 1960 1960s Coil Conductor Copper Electrical Electricity History Of Science Inductor Machine National Physical Laboratory Resistance Voltage
Modern 14"x12" (36x31cm)
Ready to Hang Contemporary Framed Prints adds style, protection, and a polished touch to your space - effortlessly.
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Wood effect frame, card mounted, 10x8 fade resistant photo print. Overall outside dimensions 14x12 inches (36x31cm). Environmentally and ozone friendly, 40mm wide x 15mm Polycore® moulding has the look of real wood, is durable and light and easy to hang. Biodegradable and made with non-chlorinated gases (no toxic fumes) it is efficient; producing 100 tons of polystyrene can save 300 tons of trees! Prints are glazed with lightweight, shatterproof, optical clarity acrylic (providing the same general protection from the environment as glass). The back is stapled hardboard with a sawtooth hanger attached. Note: measurements provided are estimated outer dimensions, which include both the image and the frame. While we aim to keep sizing consistent, exact dimensions may vary slightly due to differences in print size or production requirements, which may result in a variation in the overall size (up to approximately 2.5cm (1"))
These are individually made so all sizes are approximate
Estimated Image Size (if not cropped) is 18.3cm x 24.4cm (7.2" x 9.6")
Estimated Product Size is 31cm x 36cm (12.2" x 14.2")
