Mon (emblem) are not recognized by law. One of the best known examples of a "mon" serving as a corporate logo is that of Mitsubishi, a name meaning "three lozenges" (occasionally translated as "three buffalo nuts"), which are represented as rhombuses. Another example of corporate use is the logo for the famous soy sauce maker Kikkoman, which uses the family "mon" of the founder, and finally, the logo of music instrument/equipment and motorcycle builder Yamaha, which shows three tuning forks interlocked into the shape of a capital "Y" in reference to both their name and the origin of the company. Japanese mon
Tuning fork depends on its dimensions and what it's made from: where: The ratio in the equation above can be rewritten as if the prongs are cylindrical with radius , and if the prongs have rectangular cross-section of width along the direction of motion. Tuning forks have traditionally been used to tune musical instruments, though electronic tuners have largely replaced them. Forks can be driven electrically by placing electronic oscillator-driven electromagnets close to the prongs. A number of keyboard musical instruments use principles similar to tuning forks. The most popular of these is the Rhodes piano, in which hammers hit metal tines