MAKE A MEME
View Large Image
| View Original: | BanjoPendulum.png (531x702) | |||
| Download: | Original | Medium | Small | Thumb |
| Courtesy of: | commons.wikimedia.org | More Like This | ||
| Keywords: BanjoPendulum.png Diagram showing operation of temperature compensated gridiron pendulum invented in 1726 by British clockmaker John Harrison The pendulum uses rods of a high thermal expansion metal zinc yellow to compensate for the expansion of rods of a low thermal expansion metal iron blue so the overall pendulum doesn't change in length with temperature changes Therefore the period of swing of the pendulum and the rate of the clock are constant with temperature A general external appearance of pendulum<br> B schematic at normal temperature<br> C schematic at higher temperature<br> Created for and referenced from the English Wikipedia article Gridiron pendulum Note I can provide original drawing for conversion to scalable format Own 2008-01-26 Leonard G Public Domain Gridiron pendulums | ||||
