Definition

Describing light or other electromagnetic radiation that has a higher frequency or shorter wavelength than it originally had, often due to the source moving closer to the observer.

Example

The light from the approaching star appeared blueshifted, indicating it was moving towards us.

Conversation

Did you hear about the star that's been blueshifted recently?

No, I haven't! What does that mean?

It means its light frequency has changed, moving towards the blue end of the spectrum.

That sounds fascinating! I love learning about space.

Synonyms & Antonyms

Root Explanation

Blueshifted → It is formed from "blue" (from Old English *blǣw*, meaning the color blue) and "shifted" (from Old English *scyftan*, meaning to change or move). The term "blueshifted" refers to the phenomenon where light from an object is shifted towards the blue end of the spectrum, indicating that the object is moving closer to the observer.

Memory Tip

Think of the color 'blue' and remember that 'blueshifted' means the light is changing towards blue, indicating something is moving closer.

Visually Confused Words