Hydrometer Meaning: Definition, Examples, and Translations
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hydrometer
[haɪˈdrɒmɪtər ]
Definition
measuring instrument
A hydrometer is a device used to measure the specific gravity or density of liquids. It typically consists of a sealed glass tube with a weighted bottom that allows it to float upright in the liquid being tested. The specific gravity is determined by reading the scale on the stem of the hydrometer at the surface of the liquid.
Synonyms
density meter, specific gravity meter.
Examples of usage
- Scientists use a hydrometer to determine the density of various liquids.
- Winemakers employ hydrometers to measure the sugar content in grape juice.
- A hydrometer can help in assessing the concentration of antifreeze in car radiators.
Translations
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Interesting Facts
Science
- Hydrometers work based on buoyancy, where the device floats higher in less dense liquids and lower in denser liquids.
- They are essential in various fields such as brewing, winemaking, and even battery maintenance by measuring the density of the electrolyte.
- The temperature affects density readings, so many hydrometers are calibrated for a specific temperature.
History
- The first hydrometer was likely invented by Galileo in the early 17th century as a way to measure the density of liquids.
- Throughout history, hydrometers have evolved in design, moving from simple glass tubes to more precise instruments.
- In the 18th century, scientists began using hydrometers extensively in chemical research and other scientific endeavors.
Pop Culture
- Hydrometers have appeared in films and TV shows, often as props or tools used by scientists or detectives investigating liquids.
- They can symbolize precision and measurement in various narratives, representing the quest for knowledge and truth.
- In music, hydrometers are sometimes referenced in songs about science and exploration, highlighting their significance in understanding the world.
Applications
- Hydrometers are widely used in the beverage industry for checking the sugar content in drinks, helping to determine sweetness and alcohol content.
- In aquariums, they help hobbyists monitor salt concentration in saltwater tanks to ensure a healthy environment for fish.
- In education, they serve as demonstration tools in physics classes to explain principles of buoyancy and density.
Origin of 'hydrometer'
Main points about word origin
- The word 'hydrometer' comes from the Greek words 'hydro' meaning water and 'metron' meaning measure.
- It has been used since the 16th century, with early designs attributed to physicists in Europe.
- The term reflects its specific purpose: measuring the density of liquids relative to water.
The word 'hydrometer' comes from the Greek words 'hydro', meaning 'water', and 'metron', meaning 'measure'. It dates back to the late 17th century when devices for measuring the density of liquids were being developed. The concept of measuring specific gravity has its roots in Archimedes' principle, where the displacement of water was used to determine the volume and density of an object. Over the years, the design and functionality have evolved, leading to more precise and versatile instruments used in various fields, including chemistry, brewing, and marine sciences. The hydrometer continues to be an essential tool for scientists and engineers alike.