microbalance
Học thuậtThân thiện
Definition
Noun: A highly sensitive scientific instrument designed to measure the mass of extremely small objects or samples with exceptional precision. It operates on the principle of balancing forces but is engineered to detect minute weight differences, typically in the microgram (µg) range or smaller.
Usage
A microbalance is used in laboratory and research settings where precise measurement of tiny masses is critical. * The chemist used a microbalance to weigh the nanoparticle sample. * Accurate results in this experiment depend on a calibrated microbalance.
Advanced Usage
- Ultramicrobalance: A type of microbalance with even higher sensitivity, capable of measuring masses in the nanogram range.
- The analysis required an ultramicrobalance to detect the trace contaminants.
Variants and Related Words
- Microbalancing (gerund/noun): The process or technique of using a microbalance.
- Microbalancing is a fundamental skill in analytical chemistry.
- Balance (noun): The broader category of instruments for determining mass, which includes microbalances, analytical balances, and top-loading balances.
Synonyms
- Precision balance
- Analytical balance (Note: While often used interchangeably, an analytical balance is a type of balance with high precision, and a microbalance is a subset with the highest sensitivity.)
Related Phrases/Contexts
- Gravimetric analysis: A quantitative analytical technique where the mass of a substance is the measured property, often employing a microbalance.
- Gravimetric analysis using a microbalance provides highly accurate data.
- Weighing by difference: A common weighing procedure where the mass of a sample is determined by the difference in mass of a container before and after transferring the sample. This method is essential when using a microbalance to minimize error.
- The protocol specified weighing by difference on the microbalance.
Noun
- balance for weighing very small objects