Definition

A device that uses a movable mirror to reflect sunlight in a specific direction, often used for measuring solar radiation or in solar energy applications.

Example

The heliostat adjusted its mirror to keep the sunlight focused on the solar panel throughout the day.

Conversation

Have you ever seen a heliostat in action?

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

It's a device that reflects sunlight in a constant direction, which is pretty cool.

That sounds interesting! I’d love to learn more about how it works.

Synonyms & Antonyms

Root Explanation

Heliostat → It is formed from "helios" (ἥλιος) (meaning sun) and "statos" (στάτης) (meaning standing or stationary). The word describes a device that stands still while reflecting sunlight, maintaining a constant orientation towards the sun.

Memory Tip

Think of a device that is 'standing' ('statos') and follows the 'sun' ('helios') — that's how a heliostat reflects sunlight.

Visually Confused Words