Extech Instruments will showcase its new humidity and temperature chart recorder, Model RH520. The paperless chart recorder is said to be easy to set up and operate. The unit may be desk or wall ...

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The heat index shows how humidity makes hot days feel hotter, and why direct sun can push dangerous conditions even higher.

This resource is suitable for weather topics for primary school learners. Have you ever felt hot and sweaty even when you haven't done any exercise? That might be because of humidity. But what is ...