hydrometer
/hai'drɔmitə/
Definition
- Noun:
- A measuring instrument for determining the specific gravity of a liquid or solid: A hydrometer is a device, typically a sealed glass tube with a weighted bulb at one end and a calibrated scale, used to measure the relative density or specific gravity of a fluid based on the principle of buoyancy.
Usage Examples
- Noun:
- The brewer used a hydrometer to check the specific gravity of the beer wort.
- A hydrometer is an essential tool for testing the charge level in a car battery by measuring the density of the electrolyte.
- In the laboratory, the scientist carefully lowered the hydrometer into the saline solution to take a reading.
Advanced Usage
"To take a hydrometer reading": The act of using a hydrometer to obtain a measurement.
- After fermentation, it's important to take a hydrometer reading to calculate the alcohol content.
"To calibrate a hydrometer": To adjust or check the accuracy of a hydrometer's scale, often using distilled water at a specific temperature.
- For accurate results, you should calibrate your hydrometer before testing unknown liquids.
Variants and Related Words
Hydrometry (n): The science or process of measuring specific gravity, especially of liquids.
- Hydrometry is a fundamental practice in fields like brewing and chemistry.
Hydrometric (adj): Relating to the measurement of specific gravity or the properties of water.
- The hydrometric data was crucial for the environmental study.
Aerometer (n): An instrument for measuring the density or specific gravity of gases. (A related concept for gases, contrasting with the liquid/solid focus of a hydrometer).
Synonyms
- Gravimeter: An instrument for measuring density or specific gravity. (Note: In some contexts, "gravimeter" is synonymous, though it can also refer to an instrument for measuring gravitational fields).
- Densimeter: An instrument for measuring density.
- Areometer: Another term for a hydrometer.
Related Phrases / Compound Terms (Not Phrasal Verbs)
- Battery hydrometer: A specialized hydrometer used to test the specific gravity of battery acid.
- Sugar hydrometer / Saccharometer: A type of hydrometer calibrated for measuring the sugar content in a solution, commonly used in brewing and winemaking.
- Alcohol hydrometer: A hydrometer designed to measure the potential or actual alcohol content in a liquid.
Noun
-
a measuring instrument for determining the specific gravity of a liquid or solid
Khám phá thêm
Các từ liên quan
Từ đồng nghĩa
Từ gần giống
Từ chứa "hydrometer"
Từ có nhắc đến "hydrometer"
