noun. a timepiece or timing device with a special mechanism for ensuring and adjusting its accuracy, for use in determining longitude at sea or for any purpose where very exact measurement of time is required.
What is the chronometer used for?
chronometer, portable timekeeping device of great accuracy, particularly one used for determining longitude at sea.
What is a chronometer in science?
An extremely accurate clock or other timepiece. Chronometers are used in scientific experiments, navigation, and astronomical observations. It was the invention of a chronometer capable of being used aboard ship, in 1762, that allowed navigators for the first time to accurately determine their longitude at sea.
What is a chronometer movement?
A chronometer watch is a specific type of watch whose movement (the timekeeping mechanism inside) has been certified to operate within very specific ‘tolerances’ – the amount of time it can acceptably gain or lose per day.
Is a clock a chronometer?
is that clock is an instrument used to measure or keep track of time; a non-portable timepiece or clock can be a pattern near the heel of a sock or stocking or clock can be a large beetle, especially the european dung beetle (scarabaeus stercorarius ) while chronometer is a device for measuring time, such as a watch or …
What is another name for a chronometer?
In this page you can discover 9 synonyms, antonyms, idiomatic expressions, and related words for chronometer, like: timepiece, clock, hourglass, metronome, timer, watch, wristwatch, chronograph and sextant.
What is a chronometer oceanography?
Marine chronometers are precise, specialized clocks for finding longitude at sea. They serve as portable time standards.
Where is a chronometer found?
The most complete international collection of marine chronometers, including Harrison’s H1 to H4, is at the Royal Observatory, Greenwich, in London, UK.
What is communication chronometer?
A chronometer is, etymologically, an instrument for measuring the time. With usage it has come to mean a high-precision watch displaying seconds whose movement has been controlled over a period of several days, in different positions and at different temperatures, by an official neutral body.
Who made the chronometer?
Harrison completed his first chronometer in 1735 and submitted it for the prize. He then built three more instruments, each smaller and more accurate than its predecessor. In 1762 Harrison’s famous No.
What is chronograph and chronometer?
In short, a chronograph is a complication to measure short periods of time and a chronometer is a high-precision watch, certified by an official organisation. They are different but not antagonist concepts.
What is a Chronography?
1. Word forms: plural -phies. an arrangement of past events. 2. the creation of written statements in which specific letters indicate numerical values that denote a year or period in time.
What is a chronometer certification?
According to COSC, an official certified chronometer is a high precision watch capable of displaying the seconds and housing a movement that has been tested over several days, in different positions, and at different temperatures, by an official, neutral body (COSC).
What is chronometer clock?
noun. a timepiece or timing device with a special mechanism for ensuring and adjusting its accuracy, for use in determining longitude at sea or for any purpose where very exact measurement of time is required. any timepiece, especially a wristwatch, designed for the highest accuracy.
What are chronometer standards?
One of the criteria for « chronometer » certification is the average daily rate on the first 10 days of testing: from -4 sec to +6 sec., or up to 10 seconds per day. A tolerance which, as such, may appear high, but which, in reality, is the result of an extraordinary requirement.
What is a superlative chronometer?
Rolex and the Superlative Chronometer
Its “Superlative Chronometer” label requires an average daily rate between -2 and + 2 seconds per day when cased, tested in seven static positions and on a rotating rack simulating real life wear, performed over a period of 24 hours.