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Encyclopedia > Orders of magnitude (length)
Orders of magnitude
area
currency
data
density
energy
frequency
length
mass
numbers
power
pressure
specific heat capacity
speed
temperature
time
volume
Conversion of units
physical unit
SI
SI base unit
SI derived unit
SI prefix
Planck units
List of orders of magnitude for length
Factor Multiple Value Item
10-35 1.6 ×10-35 m Planck length; lengths smaller than this do not make any physical sense, according to current theories of physics
. . .
10-24 1 yoctometre (ym)
10-21 1 zeptometre (zm)
10-18 1 attometre (am) size of a quark, electron radius
sensitivity of the LIGO detector for gravitational waves
10-15 1 femtometre (fm) size of a proton
classical electron
10-14 10 fm scale of the atomic nucleus
range of the weak nuclear force
10-13 100 fm Compton wavelength of electron
10-12 1 picometre (pm) distance between atomic nuclei in a white dwarf
wavelength of gamma rays
5 pm wavelength of shortest X-rays
10-11 10 pm 25 pm radius of hydrogen atom
31 pm radius of helium atom
53 pm Bohr radius
10-10 100 pm wavelength of X rays
100 pm 1 Ångström
100 pm (0.1 nm) covalent radius of sulfur atom
126 pm (0.126 nm) covalent radius of ruthenium atom
135 pm (0.135 nm) covalent radius of technetium atom
153 pm (0.153 nm) covalent radius of silver atom
154 pm (0.154 nm) length of a typical covalent bond (C-C).
155 pm (0.155 nm) covalent radius of zirconium atom
175 pm (0.175 nm) covalent radius of thulium atom
225 pm (0.225 nm) covalent radius of caesium atom
500 pm (0.50 nm) width of protein α helix
10-9 1 nanometre (nm) 2 nm diameter of DNA helix
10-8 10 nm 20 nm thickness of bacterial flagellum
40 nm extreme ultraviolet wavelength
90 nm human immunodeficiency virus (HIV) (generally, viruses range in size from 20 nm to 450 nm)
100 nm 90% of particles in wood smoke are smaller than this
10-7 100 nm size of chromosomes
100 nm maximum particle size that can fit through a surgical mask
120 nm maximum particle size that can fit through a ULPA filter[1]
280 nm near ultraviolet wavelength
300 nm maximum particle size that can fit through a HEPA filter
380-430 nm wavelength of violet light -- see color and optical spectrum
430-450 nm wavelength of indigo light
450-500 nm wavelength of blue light
500-520 nm wavelength of cyan light
520-565 nm wavelength of green light
565-590 nm wavelength of yellow light
590-625 nm wavelength of orange light
625-740 nm wavelength of red light
10-6 1 micrometre (µm) 1 µm also called 1 micron
1-10 µm diameter of typical bacterium
1.55 µm wavelength of light used in optical fibre
6-8 µm diameter of a human red blood cell
6 µm anthrax spore
7 µm width of strand of spider web [2]
7 µm diameter of the nucleus of typical eukariotic cell
10-5 10 µm 10 µm typical size of a fog, mist or cloud water droplet
10 µm width of cotton fibre
10.6 µm wavelength of light emitted by a carbon dioxide laser
12 µm width of Acrylic fibre
13 µm width of nylon fibre
14 µm width of polyester fibre
15 µm width of silk fibre
17 µm dust mite excreta ¹
20 µm width of wool fibre
25.4 µm 1/1000 inch, commonly referred to as 1 mil
50 µm typical length of Euglena gracilis, a flagellate protist
80 µm average width of human hair (ranges from 18 to 180 µm)
10-4 100 µm 125 µm dust mite
200 µm typical length of Paramecium caudatum, a ciliate protist
300 µm diameter of Thiomargarita namibiensis, the largest bacterium ever discovered
500 µm MEMS micro-engine
500 µm diameter of a human ovum
500 µm typical length of Amoeba proteus, an amoeboid protist
10-3 1 millimetre (mm) 2.54 mm distance between pins in old DIP (dual-inline-package) electronic components
5 mm length of average red ant
7.62 mm common military ammunition size
10-2 1 centimetre (cm) 1.5 cm length of a large mosquito
2.54 cm 1 inch
3.1 cm 1 attoparsec (10-18 parsecs)
4.267 cm diameter of a golf ball
10-1 1 decimetre (dm) 10 cm wavelength of the highest UHF radio frequency, 3 GHz
10 cm diameter of the cervix upon entering the second stage of labour
10.16 cm Hand using in measuring height of horses (4 inches)
12 cm wavelength of the 2.45 GHz ISM radio band
15 cm height of a Lilliputian from Gulliver's Travels
30.48 cm 1 foot
50-65 cm a pizote's tail
66 cm length of the longest pine cones (produced by the sugar pine)
89 cm average adult height of a Hobbit
90 cm average length of a rapier, a fencing sword
91 cm 1 yard
100 1 metre 100 wavelength of the lowest UHF and highest VHF radio frequency, 300 MHz
1.435m Standard gauge of railway track
1.7 m (5 feet 7 inches) average height of a human being
2.45 m highest jump by a human being (Javier Sotomayor)
2.72 m tallest known human being (Robert Wadlow)
2.77 - 3.44 m wavelength of the broadcast radio FM band 108 - 87 MHz
3.048 m (10 feet) height of the basket in basketball
5.5 m height of tallest animal, the giraffe
8.95 m longest jump by a human being (Mike Powell)
101 1 decametre (dam) 10 m wavelength of the lowest VHF and highest shortwave radio frequency, 30 MHz
18.44 m (60 feet 6 inches) distance between the pitcher's rubber and home plate on a baseball field
20 m length of a cricket pitch
21 m height of High Force waterfall in England.
23 m height of the obelisk of the Place de la Concorde, Paris.
25 m wavelength of the broadcast radio shortwave band at 12 MHz
27.43 m (90 feet) distance between bases on a baseball field
30 m length of a blue whale, the largest animal
31 m wavelength of the broadcast radio shortwave band at 9.7 MHz
40 m average depth beneath the seabed of the Channel tunnel
49 m width of an American football field (53 1/3 yards)
49 m wavelength of the broadcast radio shortwave band at 6.1 MHz
52 m height of Niagara Falls
55 m height of the Leaning Tower of Pisa
62 m Height of Pyramid of Djoser
70 m width of soccer field
70 m length of the Bayeux Tapestry
91.44 m length of an American football field (100 yards, measured between the goal lines)
102 1 hectometre (hm) 100 m wavelength of the lowest shortwave radio frequency and highest medium wave radio frequency, 3 MHz
105 m length of a soccer field
109.73 m total length of an American football field (120 yards, including the end zones)
112.34 m height of the world's tallest tree, a Coast redwood
137 m height of the Great Pyramid of Giza
147 m original height of the Great Pyramid of Giza
168 m height of the Bungsberg, highest point in Schleswig-Holstein, Germany
187 m shortest wavelength of the broadcast radio AM band, 1600 kHz
193 m the approximate length of New Jersey State Highway 59
244 m height of the City Gate building in Ramat-Gan, Israel
300 m height of the Eiffel Tower
340 m distance sound travels in air in one second; see speed of sound
400-500 m approximate heights of the world's tallest skyscrapers of the past 70 years.
458 m length of the Knock Nevis, the world's largest supertanker
541 m (1,776 ft) height of the planned Freedom Tower at the World Trade Center site
553.33 m height of the CN Tower, the world's tallest free-standing land structure
555 m longest wavelength of the broadcast radio AM band, 540 kHz
647 m height of the Warsaw radio mast, formerly the tallest man-made structure, collapsed in 1991
103 1 kilometre (km) 1 km wavelength of the lowest medium wave radio frequency, 300 kHz
1609 m 1 international mile
1852 m 1 nautical mile
8848 m height of the highest mountain on earth, Mount Everest
104 10 km 10,911 m depth of deepest part of the ocean, Mariana Trench
25 km height of the highest known mountain of the solar system, Olympus Mons on Mars
33 km narrowest width of the English Channel at the Strait of Dover
53,9 km length of the Seikan Tunnel, at present (feb 2006) the longest in the world
105 100 km 111 km one degree of latitude on Earth
975 km greatest diameter of the largest solar system asteroid, 1 Ceres
106 1,000 km = 1 megametre (Mm) 3,480 km diameter of the Moon
6,400 km length of the Great Wall of China
6,600 km approximate length of the two longest rivers, the Nile and the Amazon
7,821 km length of the Trans-Canada Highway
107 10,000 km 12,756 km equatorial diameter of the Earth
40,075 km length of the Earth's equator
108 100,000 km 142,984 km diameter of Jupiter
384,000 km = 384 Mm Moon's orbital distance from Earth
109 1 million km = 1 gigametre (Gm) 1,390,000 km = 1.39 Gm diameter of the Sun
1010 10 million km
1011 100 million km 150 million km = 150 Gm 1 astronomical unit (AU); mean distance between Earth and Sun.
1012 1000 million km = 1 terametre (Tm) 1.4 ×109 km orbital distance of Saturn from Sun
5.9 ×109 km = 5.9 Tm orbital distance of Pluto from Sun
1013 10 Tm 14.56 ×109 km = 14.56 Tm distance of the Voyager 1 spacecraft from sun (November 2005), the farthest man-made object so far
1014 100 Tm
1015 1 petametre (Pm) 9.46 ×1012 km = 9.46 Pm = 1 light year distance travelled by light in one year; at its current speed, Voyager 1 would need 17,500 years to travel this distance
1016 10 Pm 3.2616 light years (3.08568 ×1016 m = 30.8568 Pm) 1 parsec
4.22 light years = 39.9 Pm distance to nearest star (Proxima Centauri)
1017 100 Pm
1018 1 exametre (Em)
1019 10 Em
1020 100 Em 10,000 light years
1021 1 zettametre (Zm) 100,000 light years diameter of galactic disk of Milky Way Galaxy
52 kiloparsecs (1.6 ×1021 m = 1.6 Zm) distance to the Large Magellanic Cloud (a dwarf galaxy orbiting the Milky Way)
54 kiloparsecs (1.66 ×1021 m = 1.66 Zm) distance to the Small Magellanic Cloud (another dwarf galaxy orbiting the Milky Way)
1022 10 Zm 22.3 Zm (2.36 million light years = 725 kiloparsecs = 22.3 Zm) distance to Andromeda Galaxy
50 Zm (1.6 Mpc) diameter of Local Group of galaxies
1023 100 Zm 300-600 Zm (10-20 megaparsecs) distance to Virgo cluster of galaxies
1024 1 yottametre (Ym) 200 million light years (2 Ym, 60 megaparsecs) diameter of the Local Supercluster
500 million light years (5 Ym, 150 megaparsecs)
1025 10 Ym
1026 100 Ym 10 ×109 light years estimated distance to certain quasars
13.7 ×109 light years = 1.3 ×1026 m = 130 Ym distance the cosmic background radiation has travelled since the Big Bang

  Results from FactBites:
 
Orders of magnitude - Encyclopedia, History and Biography (673 words)
More precisely, the order of magnitude of a number can be defined in terms of the decimal logarithm, usually as the integer part of the logarithm.
Thus, an order of magnitude is an approximate position on a logarithmic scale.
For example, an order of magnitude estimate for a variable between about 3 billion and 30 billion (such as the human population of the Earth) is 10 billion.
  More results at FactBites »

 
 

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