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
Greater Netherlands either within the Netherlands or as independent state with strong links with the Netherlands. Many Orangists are Greater Dutch and vice versa, but not all Greater Dutch are monarchist Orangists, as some want to structure the state differently. Orangism has become more popular since 1980, when the term was used to refer to the Greater Netherlands projects, with a focus on the restoration of the Dutch royal family to the entire Dutch-populated part of the region. The popularity of the House of Orange-Nassau in Flanders is partly based on the francophile tendency of the Belgian monarchy. Contemporary Orangism in Flanders