loop

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References

Images

The torus is not simply connected. While the small loop c can be shrunk to a point without breaking the loop or the torus, loops a and b cannot because they encompass the torus's central hole.

Discover

Middle East bee locator map

Are the Middle East and the Near East the Same Thing?

Lake Mead (the impounded Colorado River) at the Hoover Dam. The light-coloured band of rock above the shoreline shows the decrease in water level in the first few years of the 21st century.

6 Lakes That Are Drying Up

Time zone map with standard time zones and International Date Line

Why Are Some Time Zones 30 Minutes Off Instead of an Hour?

Paul Revere. "The bloody massacre perpetrated in King Street Boston on March 5th 1770 by a party of the 29th Regt.," engraved by Paul Revere. Boston Massacre.

There’s a Riot Goin’ On: Riots in U.S. History (Part One)

airplane in flight (plane, aircraft, flying)

7 Puzzling Plane Disappearances

Salem Witch Trials. Photogravure after the painting by Walter McEwen titled - The Witches - circa 1890s.

How Rye Bread May Have Caused the Salem Witch Trials

Statue of Nostradamus

Nostradamus and His Prophecies

loop

physics

Learn about this topic in these articles:

standing waves

In sound: Fundamentals and harmonics
…divided into equal segments called loops. Each loop is one-half wavelength long, and the wavelength is related to the length of the string by the following equation:
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