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
Cassandra (metaphor) applied in a variety of contexts such as psychology, environmentalism, politics, science, cinema, the corporate world, and in philosophy, and has been in circulation since at least 1949 when French philosopher Gaston Bachelard coined the term 'Cassandra Complex' to refer to a belief that things could be known in advance. The Cassandra metaphor is applied by some psychologists to individuals who experience physical and emotional suffering as a result of distressing personal perceptions, and who are disbelieved when they attempt to share the cause of their suffering with others. In 1963, psychologist Melanie Klein provided an interpretation of Cassandra as