Human-defined Scales and Structures
- 100 metres — wavelength of the highest mediumwave radio frequency, 3 MHz
- 100 metres — Spacing of location marker posts on British motorways.
- 138.8 metres — height of the Great Pyramid of Giza (Pyramid of Cheops)
- 139 metres — height of the world's tallest roller coaster, Kingda Ka
- 187 metres— shortest wavelength of the broadcast radio AM band, 1600 kHz
- 202 metres — length of the Széchenyi Chain Bridge connecting Buda and Pest
- 320.75 metres — height of the Eiffel Tower(including antenna)
- 328 metres — height of Auckland's Sky Tower, the tallest free-standing structure in the Southern Hemisphere
- 341 metres — height of the world's tallest bridge, the Millau Viaduct
- 390 metres — height of the Empire State Building
- 400–800 metres — approximate heights of the world's tallest skyscrapers of the past 80 years.
- 458 metres — length of the Knock Nevis, the world's largest supertanker
- 555 metres — longest wavelength of the broadcast radio AM band, 540 kHz
- 630 metres — height of the KVLY-TV mast, second tallest structure in the world.
- 646 metres — height of the Warsaw radio mast, the world's tallest structure until its collapse in 1991.
- 828 metres — height of Burj Khalifa, world's tallest structure on 17 January 2009
- 1000 metres — wavelength of the lowest mediumwave radio frequency, 300 kHz
Read more about this topic: 1 Hectometre
Famous quotes containing the words scales and/or structures:
“In what camera do you taste
Poison, in what darkness set
Glittering scales and point
The tipping tongue?”
—Wallace Stevens (1879–1955)
“The American who has been confined, in his own country, to the sight of buildings designed after foreign models, is surprised on entering York Minster or St. Peter’s at Rome, by the feeling that these structures are imitations also,—faint copies of an invisible archetype.”
—Ralph Waldo Emerson (1803–1882)