You can demonstrate that hot glass is an electrical conductor (hot glass is actually an example of a solid electrolyte). This is counterintuitive because at room temperature, glass is a good electrica.. more

words matched: resistivity

A short overview of the common methods of water purification in school laboratories, include pros and cons. This will be useful for any teacher or technician looking to buy a new water purification sy.. more

words matched: resistivity

Gives very detailed guidance on what water purification entails, and when pure water is needed in school science. It suggests the advantages and disadvantages of the methods of purification available .. more

words matched: resistivity

Gives guidance on general fieldwork including specific measurements and techniques. Detailed guidance is included on measuring substances in the soil, water and air, and electronic measurements such a.. more

words matched: resistivity

Guidance on general laboratory equipment including low voltage supplies, magnifiers, meters, micrometer screw gauges, microscopes, pumps, thermometers, timers, tubing and volume measurement.

words matched: resistivity