naked eye

Idioms and Phrases

Sight unassisted by an instrument such as a microscope or telescope. For example, These insects are too small to be seen with the naked eye . This expression was first recorded in 1664.

Example Sentences

This sends a fast, bright streak of light through the sky, visible to the naked eye.

From BBC

You won't need binoculars or a telescope as the shower will be visible to the naked eye.

From BBC

Viewers can spot Saturn with the naked eye, but in order to see its rings, they will need a backyard telescope.

From Los Angeles Times

The comet was visible for the first time in 80,000 years about two weeks ago, and astrologers said it might be possible to view with the naked eye on Saturday.

From BBC

Stargazers will have the opportunity of a lifetime Saturday: the chance to view a newly discovered comet with the naked eye.

From Los Angeles Times