Tacoma Narrows Bridge (1940) Billah and Scanlan (1991) reported that in fact, many physics textbooks (for example Resnick et al. and Tipler et al.) wrongly explain that the cause of the failure of the Tacoma Narrows bridge was externally forced mechanical resonance. Resonance is the tendency of a system to oscillate at larger amplitudes at certain frequencies, known as the system's natural frequencies. At these frequencies, even relatively small periodic driving forces can produce large amplitude vibrations, because the system stores energy. For example, a child using a swing realizes that if the pushes are properly timed, the swing can move with a very
Inside baseball (metaphor) Inside baseball (metaphor) The phrase "inside baseball" is a term used mainly in the United States. It is "a figurative adjective meaning appreciated by only a small group of insiders or aficionados." It usually refers to a detail-oriented approach to the minutiae of a subject, which requires such a specific knowledge about what is being discussed that the nuances are not understood or appreciated by outsiders. According to "Merriam-Webster", the term originated in the 1890s referring to a particular style of playing the game which relied on singles, walks, bunts, and stolen bases rather than power hitting. Within a few