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...

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...

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...

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...

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...

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...

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

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...

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...

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

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...

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

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

railways needed clocks for railway time that were synchronized between stations, while local people needed to match their clock (or the church clock) to the time...

Great Britain's public clocks were using GMT, but it was not made the island's legal time until August 2, 1880. Some British clocks from this period have...

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...

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

A matter wave clock is a type of clock whose principle of operation makes use of the apparent wavelike properties of matter. Matter waves were first proposed...

with. In 1801, Terry was granted a patent on an equation clock. This was the first patent for a clock mechanism that was ever granted by the United States...

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

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

closer the clock is to the source of gravitation), the slower time passes, speeding up as the gravitational potential increases (the clock moving away...

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

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

measured elapsed time with a water clock, using an "extremely accurate balance" to measure the amount of water. The equations ignore air resistance, which has...

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 =...

of the shadow on the face of a sundial. In fact, the component of the equation of time which accounts for the tilt of the equatorial plane relative to...