An equation clock is a mechanical clock which includes a mechanism that simulates the equation of time, so that the user can read or calculate solar time...

apply a correction to the time shown by a clock to make it agree with sundial time. Some elaborate "equation clocks", such as one made by Joseph Williamson...

A clock or chronometer is a device that measures and displays time. The clock is one of the oldest human inventions, meeting the need to measure intervals...

indicated by a steady clock set so that over the year its differences from apparent solar time would have a mean of zero. The equation of time is the east...

shown by a clock that runs at constant speed Equation clock, a clock that contains a mechanism that embodies the equation of time, so the clock shows solar...

ISBN 978-3-642-01962-3. Extract of page 87 See equations 3, 4, 6 and 9 of Iorio, Lorenzo (2005). "An analytical treatment of the Clock Paradox in the framework of the...

in a clock made by Joseph Williamson in 1720. It employed a differential to add the equation of time to local mean time, as determined by the clock mechanism...

Huygens first used a clock to calculate the equation of time (the difference between the apparent solar time and the time given by a clock), publishing his...

A pendulum clock is a clock that uses a pendulum, a swinging weight, as its timekeeping element. The advantage of a pendulum for timekeeping is that it...

from equation (1) Glasgow, David (1885). Watch and Clock Making. London: Cassel & Co. pp. 279–284. Matthys, Robert J. (2004). Accurate Pendulum Clocks. UK:...

ahead of the clock. Since the main effect of this oscillation concerns time, it is called the equation of time, using the word "equation" in a somewhat...

seven years after he arrived in Paris, Ferdinand Berthoud submitted an equation clock to the Royal Academy of Sciences, thus demonstrating his extraordinary...

A real-time clock (RTC) is an electronic device (most often in the form of an integrated circuit) that measures the passage of time. Although the term...

The classical rocket equation, or ideal rocket equation is a mathematical equation that describes the motion of vehicles that follow the basic principle...

The Prague astronomical clock or Prague Orloj (Czech: Pražský orloj [praʃskiː orloj]) is a medieval astronomical clock attached to the Old Town Hall in...

are considered a single movement. All but the Equation Works movements have dials on the front of the clock, arranged in left, center, and right sections...

Pdynamic, by lowering unnecessary switching activity in clock signals. The following equation can approximate the dynamic power: P d y n a m i c = α ⋅...

Clock. Ames, Iowa: Iowa State University Press. Part II, Proposition XXV, p. 69. ISBN 0-8138-0933-9. Simmons, George (1972). Differential Equations with...

time) along a timelike world line is defined as the time as measured by a clock following that line. The proper time interval between two events on a world...

An atomic clock is a clock that measures time by monitoring the resonant frequency of atoms. It is based on atoms having different energy levels. Electron...

Quartz clocks and quartz watches are timepieces that use an electronic oscillator regulated by a quartz crystal to keep time. The crystal oscillator, controlled...

coordinate time tc of the clock's position in the chosen reference frame. Equation (2) is a fundamental and much-quoted differential equation for the relation...

constructed some famous public clocks, including the 1780 equation clock on the Hôtel de Ville de Paris and the clock on the Hôtel des Invalides. A nephew...

A water clock, or clepsydra (from Ancient Greek κλεψύδρα (klepsúdra) 'pipette, water clock'; from κλέπτω (kléptō) 'to steal' and ὕδωρ (hydor) 'water';...

(galvanized) nails and screws. Commercial "potato clock" science kits include electrodes and a low-voltage digital clock. After one cell is assembled, a multimeter...

date, the moon phase, and the equation of time, and includes a tide clock. Senzeilles [fr]. The Senzeilles astronomical clock [fr] was constructed by self-taught...

minutes earlier by clock time; but the local time, 2 hours ahead of GMT in the summer, makes it 120 minutes later by clock time. The equation of time at that...

{\displaystyle n_{\text{p}}} equally spaced planet gears, the following equation must be satisfied: N s + N r n p = A {\displaystyle {\frac...

The equation t′ = constant defines a "line of simultaneity" in the (x′, t′) coordinate system for the second (moving) observer, just as the equation t =...

Wheeler–DeWitt equation for theoretical physics and applied mathematics, is a field equation attributed to John Archibald Wheeler and Bryce DeWitt. The equation attempts...