Human-defined Scales and Structures
- 10 metres — wavelength of the highest shortwave radio frequency, 30 MHz
- 23 metres — height of the obelisk of the Place de la Concorde, Paris, France.
- 25 metres — wavelength of the broadcast radio shortwave band at 12 MHz
- 29 metres — height of the lighthouse at Savudrija, Slovenia.
- 31 metres — wavelength of the broadcast radio shortwave band at 9.7 MHz
- 34 metres — height of the Split Point Lighthouse in Aireys Inlet, Victoria, Australia.
- 40 metres — average depth beneath the seabed of the Channel tunnel
- 49 metres — wavelength of the broadcast radio shortwave band at 6.1 MHz
- 55 metres — height of the Leaning Tower of Pisa
- 60 metres — height of Pyramid of Djoser
- 64 metres — wingspan of a Boeing 747-400
- 70 metres — length of the Bayeux Tapestry
- 70 metres — width of a typical football field
- 88.40 metres — wingspan of the Antonov An-225 transport aircraft
- 100 metres — wavelength of the lowest shortwave radio frequency, 3 MHz
Read more about this topic: 1 Decametre
Famous quotes containing the words scales and/or structures:
“As deaths have accumulated I have begun to think of life and death as a set of balance scales. When one is young, the scale is heavily tipped toward the living. With the first death, the first consciousness of death, the counter scale begins to fall. Death by death, the scales shift weight until what was unthinkable becomes merely a matter of gravity and the fall into death becomes an easy step.”
—Alison Hawthorne Deming (b. 1946)
“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)