Definition

This is the process of measuring how much heat is produced by electromagnetic radiation, particularly sunlight.

Example

Actinometry is essential in studying the effects of sunlight on plant growth.

Conversation

I just read about actinometry in my science class.

Oh really? What’s that about?

It's the measurement of how much heat electromagnetic radiation produces.

That sounds interesting! I had no idea there was a specific term for that.

Synonyms & Antonyms

Root Explanation

Actinometry → It is formed from "actino-" (from Greek "aktinos", meaning ray) and "-metry" (from Greek "metron", meaning measure). The word refers to the measurement of radiant energy, particularly in the form of light rays.

Memory Tip

Think of 'rays' ('actino-') being 'measured' ('-metry') — that's what actinometry is all about.

Visually Confused Words