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:
“For these have governed in our lives,
And see how men have warred.
The Cross, the Crown, the Scales may all
As well have been the Sword.”
—Robert Frost (1874–1963)
“The philosopher believes that the value of his philosophy lies in its totality, in its structure: posterity discovers it in the stones with which he built and with which other structures are subsequently built that are frequently better—and so, in the fact that that structure can be demolished and yet still possess value as material.”
—Friedrich Nietzsche (1844–1900)