Can we take maximum and minimum temperature readings without using a thermometer containing mercury?
The way the horseshoe-shaped maximum/minimum thermometer works is only possible using two different liquids, one of which must be mercury. To take these data without using a thermometer with mercury you must use an electronic temperature sensor that remembers the maximum and minimum temperatures or that stores its readings using a data logger. See the “Optional Protocols” in the on-line version of the Teacher’s Guide.
