diameter

These tiny machines are around 50 times smaller than the diameter of a human hair, bringing researchers closer to the long-pursued goal of interacting directly with the microscopic world.

From Science Daily ● Aug. 18, 2026

At the eclipse's maximum point, about 93% of the Moon's diameter will lie within Earth's dark central shadow, known as the umbra.

From Science Daily ● Aug. 5, 2026

It is feasible that the winning team will have had to travel a distance the equivalent to the diameter of the Earth.

From BBC ● Jun. 11, 2026

A traditional arthroscope measures about 4 millimeters in diameter.

From The Wall Street Journal ● May 26, 2026

Then the window makers came and filled the rose window’s thirty-two-foot diameter with hundreds of pieces of colored glass.

From "Cathedral: The Story of Its Construction" by David Macaulay

Which is to say, Porsche invented an entirely new flat-six—different bore diameters and everything—just to clear 11 centimeters under the engine cover.

From The Wall Street Journal ● Oct. 30, 2025

PM 2.5 refers to the level of tiny, hazardous particles - with diameters that are 2.5 micrometres or smaller - that can enter bloodstreams though the lungs.

From BBC ● Mar. 6, 2024

They have up to 24 arms and can grow to diameters of more than three feet.

From New York Times ● Mar. 6, 2024

The larger, so-called coarse particles, have diameters between 2.5 and 10 micrometers; some examples of this type of particulate matter include wind-blown dust, fly ash and animal or vegetal particles.

From Salon ● Nov. 30, 2023

Now, as the volumes of spheres vary as the cubes of their diameters, it follows that the volume of the nebula will vary as the cube of its distance from the earth.

From Astronomical Curiosities Facts and Fallacies by J. Ellard Gore