A description of galileos water clock

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A description of galileos water clock

One of his most important experiments was the inclined plane experiment. Galileo used his inclined plane, a simple board with a groove down which he rolled a small metal ball, to examine Aristotelian ideas about motion.

A piece of wooden moulding or scantling, about 12 cubits [about 7 m] long, half a cubit [about 30 cm] wide and three finger-breadths [about 5 cm] thick, was taken; on its edge was cut a channel a little more than one finger in breadth; having made this groove very straight, smooth, and polished, and having lined it with parchment, also as smooth and polished as possible, we rolled along it a hard, smooth, and very round bronze ball.

Our own construction entailed planing at a 45 degree angle one edge each on two foot two by fours, which when nailed together formed a groove. Instead of a small bronze ball, we used a three-quarter inch steel ball bearing.

We added a metal piece to the end of the inclined plane, against which the ball struck at the end of each run, to make our timing precise. Click here for a more detailed description of our inclined plane. Galileo describes his water clock in Discourses on Two New Sciences For the measurement of time, we employed a large vessel of water placed in an elevated position; to the bottom of this vessel was soldered a pipe of small diameter giving a thin jet of water, which we collected in a small glass during the time of each descent Our water clock consisted of a plastic bucket with a small hole drilled in the bottom, into which we placed a length of plastic tubing.

When filled with water the bucket emitted a thin stream of water through the plastic tubing. We controlled the flow of water by clamping the tubing with a small metal clamp.


We marked our inclined plane at one quarter, one half, and three quarters its length. Starting with the full length of the plane, we rolled the ball twenty times down each length, timing each trial with our water clock.

Like Galileo, we weighed the water from each trial so as to determine the ratio of times for each length.

A description of galileos water clock

Our experiment proved that Galileo could have attained the accuracy which he claimed for this experiment. Our findings also point clearly to the concept of acceleration: Last revised April 12, Cary Clifford.Who Invented the Mechanical Clock? Early clocks like Xing's lasted only a few years before the water in the mechanism caused the metal to corrode.

Later clocks used mercury, which was safe for use with iron and bronze mechanisms without causing corrosion. Similar Articles. Galileo Pendulum Clock Model, Replica Previous. Next >> Description After decades of experiments with the pendulum, Galileo Galilei () conceived of a pendulum clock that could be used to determine longitude at sea.

Near the end of his life, blind and in failing health, he discussed the design with his son Vincenzio and his biographer. Reconstruction of Galileo Galilei’s experiment: the inclined plane the author, the inclined plane and the water clock, built following Galileo’s specifications, are precise This description is very clear and is almost a prototype for modern scientific language.

In. Galileo di Vincenzo Bonaiuti de' Galilei was born in Pisa in Galileo's own description is a thought experiment and does not include details of the method in the way that would be crucial to modern ideas of reproducibility. The basic principle of the Galileo clock (and indeed all mechanical clocks) is that the energy in a coiled.

Pendulum Experiment

Galileo’s clocks. Passive hydrogen maser. The passive hydrogen maser clock is the master clock on board each satellite. It is an atomic clock which uses the ultra stable GHz transition in a hydrogen atom to measure time to . Italian astronomer Galileo Galilei made a number of inventions and discoveries that remain important to astronomy and Galileo designed the first pendulum clock.

held together by water.".

Galileo Galilei (Stanford Encyclopedia of Philosophy)