Overview

Beckmann thermometer


Show Summary Details

Quick Reference

A thermometer for measuring small changes of temperature (see illustration). It consists of a mercury-in-glass thermometer with a scale covering only 5 or 6°C calibrated in hundredths of a degree. It has two mercury bulbs, the range of temperature to be measured is varied by running mercury from the upper bulb into the larger lower bulb. It is used particularly for measuring depression of freezing point or elevation of boiling point of liquids when solute is added, in order to find relative molecular masses.

Beckmann thermometer

Subjects: Chemistry — Physics.


Reference entries

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.