tỉ trọng kế
Definition
- Noun:
- Hydrometer: A scientific instrument used to measure the relative density or specific gravity of a liquid compared to water. It typically consists of a sealed glass tube with a calibrated scale, which floats at different levels depending on the density of the liquid.
- Pycnometer: A laboratory device, often a small glass flask with a precise volume, used for accurately determining the density or specific gravity of a solid or liquid by measuring its mass and volume.
Usage Examples
- Noun:
- Nhà hóa học dùng tỉ trọng kế để đo nồng độ cồn. (The chemist uses a hydrometer to measure the alcohol concentration.)
- Tỉ trọng kế là dụng cụ thiết yếu trong phòng thí nghiệm. (A pycnometer is an essential tool in the laboratory.)
- Anh ấy kiểm tra tỉ trọng của axit bằng tỉ trọng kế. (He checks the specific gravity of the acid with a hydrometer.)
Advanced Usage
- "Đo bằng tỉ trọng kế": to measure with a hydrometer/pycnometer.
- Mẫu chất lỏng này cần được đo bằng tỉ trọng kế chính xác. (This liquid sample needs to be measured with a precise hydrometer.)
Variants and Related Words
- Tỷ trọng kế: An alternative spelling with the same meaning.
- Dụng cụ đo tỷ trọng: Density measuring instrument.
- Phù kế: Another term for hydrometer, often used in specific contexts like brewing.
Synonyms
- Density meter: An instrument for measuring density.
- Specific gravity hydrometer: A type of hydrometer calibrated for specific gravity.
- Aerometer: An instrument for measuring the density of gases or liquids (less common, broader term).
Related Scientific Terms
- Tỷ trọng / Tỉ trọng: Specific gravity; density.
- Tỉ trọng của chì cao hơn nước. (The specific gravity of lead is higher than water.)
- Khối lượng riêng: Density (mass per unit volume).