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:
“It cannot but affect our philosophy favorably to be reminded of these shoals of migratory fishes, of salmon, shad, alewives, marsh-bankers, and others, which penetrate up the innumerable rivers of our coast in the spring, even to the interior lakes, their scales gleaming in the sun; and again, of the fry which in still greater numbers wend their way downward to the sea.”
—Henry David Thoreau (1817–1862)
“If there are people who feel that God wants them to change the structures of society, that is something between them and their God. We must serve him in whatever way we are called. I am called to help the individual; to love each poor person. Not to deal with institutions. I am in no position to judge.”
—Mother Teresa (b. 1910)