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What is a micron?

Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. Micron Definition: A micron is a unit of length equivalent to a millionth of a meter. 1 micron = 1 μm = 10 -6 m.

How many microns are there in a human hair?

1 micron = 1 μm = 10 -6 m. Examples: Red blood cells are approximately 10 microns in diameter. Human hair is between 10 and 100 microns in diameter.