Christiaan Huygens, Lord of Zeelhem, was a Dutch mathematician, physicist, engineer, astronomer, and inventor who is regarded as a key figure in the Scientific Revolution. In physics, Huygens made seminal contributions to optics and mechanics, while as an astronomer he studied the rings of Saturn and discovered its largest moon, Titan. As an engineer and inventor, he improved the design of telescopes and invented the pendulum clock, the most accurate timekeeper for almost 300 years. A talented mathematician and physicist, his works contain the first idealization of a physical problem by a set of mathematical parameters, and the first mathematical and mechanistic explanation of an unobservable physical phenomenon.
A pendulum is a device made of a weight suspended from a pivot so that it can swing freely. When a pendulum is displaced sideways from its resting, equilibrium position, it is subject to a restoring force due to gravity that will accelerate it back toward the equilibrium position. When released, the restoring force acting on the pendulum's mass causes it to oscillate about the equilibrium position, swinging back and forth. The time for one complete cycle, a left swing and a right swing, is called the period. The period depends on the length of the pendulum and also to a slight degree on the amplitude, the width of the pendulum's swing.
The Foucault pendulum or Foucault's pendulum is a simple device named after French physicist Léon Foucault, conceived as an experiment to demonstrate the Earth's rotation. If a long and heavy pendulum suspended from the high roof above a circular area is monitored over an extended period of time, its plane of oscillation appears to change spontaneously as the Earth makes its 24-hourly rotation.
Jean Bernard Léon Foucault was a French physicist best known for his demonstration of the Foucault pendulum, a device demonstrating the effect of Earth's rotation. He also made an early measurement of the speed of light, discovered eddy currents, and is credited with naming the gyroscope.
The Franklin Institute is a science museum and the center of science education and research in Philadelphia, Pennsylvania. It is named after the American scientist and statesman Benjamin Franklin. It houses the Benjamin Franklin National Memorial. Founded in 1824, the Franklin Institute is one of the oldest centers of science education and development in the United States. Its chief astronomer is Derrick Pitts.
The Oregon Museum of Science and Industry is a science and technology museum in Portland, Oregon, United States. It contains three auditoriums, including a large-screen theatre, planetarium, and exhibition halls with a variety of hands-on permanent exhibits focused on natural sciences, industry, and technology. Transient exhibits span a wider range of disciplines.
Stardome Observatory & Planetarium is a public astronomical observatory and planetarium situated in Maungakiekie/One Tree Hill Domain in Auckland, New Zealand.
The Bogdanov affair was an academic dispute over the legitimacy of the doctoral degrees obtained by French twins Igor and Grichka Bogdanov and a series of theoretical physics papers written by them in order to obtain degrees. The papers were published in reputable scientific journals, and were alleged by their authors to culminate in a theory for describing what occurred before and at the Big Bang.
The Allais effect is the alleged anomalous behavior of pendulums or gravimeters which is sometimes purportedly observed during a solar eclipse. The effect was first reported as an anomalous precession of the plane of oscillation of a Foucault pendulum during the solar eclipse of June 30, 1954 by Maurice Allais, a French polymath who later won the Nobel Prize in Economics. Allais reported another observation of the effect during the solar eclipse of October 2, 1959 using the paraconical pendulum he invented. This study earned him the 1959 Galabert Prize of the French Astronautical Society and made him a laureate of the U.S. Gravity Research Foundation for his 1959 memoir on gravity. The veracity of the Allais effect remains controversial among the scientific community, as its testing has frequently met with inconsistent or ambiguous results over more than five decades of observation.
The Houston Museum of Natural Science is a natural history museum located on the northern border of Hermann Park in Houston, Texas, United States. The museum was established in 1909 by the Houston Museum and Scientific Society, an organization whose goals were to provide a free institution for the people of Houston focusing on education and science. The museum complex consists of a central facility with four floors of natural science halls and exhibits, the Burke Baker Planetarium, the Cockrell Butterfly Center, and the Wortham Giant Screen Theatre. In 2022, the museum received 1,520,000 visitors, making it seventh on the List of most-visited museums in the United States, and was the third most-visited U.S. science museum. Much of the museum's popularity is attributed to its large number of special or guest exhibits.
The specific strength is a material's strength divided by its density. It is also known as the strength-to-weight ratio or strength/weight ratio or strength-to-mass ratio. In fiber or textile applications, tenacity is the usual measure of specific strength. The SI unit for specific strength is Pa⋅m3/kg, or N⋅m/kg, which is dimensionally equivalent to m2/s2, though the latter form is rarely used. Specific strength has the same units as specific energy, and is related to the maximum specific energy of rotation that an object can have without flying apart due to centrifugal force.
The Museu de les Ciències Príncipe Felipe is a science museum in Valencia, Spain. It is part of the City of Arts and Sciences, an architectural complex within the city, and can be found at the end of Luis García Berlanga Street. Its director is Manuel Toharia, a Spanish science writer and television personality.
The Carl F. Eyring Science Center (ESC) is one of the science buildings on the Brigham Young University (BYU) campus in Provo, Utah, United States. It was built in 1950 and named after Carl F. Eyring in 1954.
The PUCRS Museum of Science and Technology is a Brazilian museum run by the Pontifical Catholic University of Rio Grande do Sul (PUCRS), located in the city of Porto Alegre in Rio Grande do Sul, at Ipiranga Av. 6681, Building 40, Parthenon. Visiting hours are from 9am to 5pm Tuesday to Friday and 10am to 6pm during the weekend.
The Royal Eise Eisinga Planetarium is an 18th-century orrery in Franeker, Friesland, Netherlands. It is currently a museum and open to the public. The orrery has been on the top 100 Dutch heritage sites list since 1990. In September 2023, it received the status of UNESCO World Heritage Site. It is the oldest working orrery in the world.
Penza planetarium is located at Penza Central Park of Culture and Recreation named after V. Belinsky in the building formerly occupied by the Penza Hydrometeorological station. Historical and cultural memorial of local importance. The first planetarium device was installed in 1954.
The Buhl Planetarium and Institute of Popular Science Building, also known as the "People's Observatory", is located at 10 Children's Way in the Allegheny Center neighborhood of Pittsburgh, Pennsylvania.
Science Factory is a museum and science center located at Sandnes, in Rogaland, Norway.
Valladolid Science Museum was opened in May 2003 as a museum and an iconic piece of architecture based on an old flour mill. Rafael Moneo and Enrique de Teresa used a lot of the old industrial complex to create this new Science Museum.
