Definition

A device used to measure the total amount of solar radiation that reaches the Earth.

Example

Scientists use a pyrheliometer to collect data on solar energy for their research.

Conversation

Have you ever heard of a pyrheliometer?

No, I haven't! What does it do?

It's a device that measures solar radiation, like how much sunlight hits the Earth.

That sounds really interesting! I didn't know that existed.

Synonyms & Antonyms

Root Explanation

Pyrheliometer → It is formed from "pyr" (from Greek "pur", meaning fire) and "helios" (meaning sun) and "-meter" (meaning measure). The word refers to an instrument that measures solar radiation or the intensity of sunlight.

Memory Tip

Think of 'fire' ('pyr') and 'sun' ('helios') being measured — that's what a pyrheliometer does.

Visually Confused Words