1 E-10 m facts for kids

To help compare different orders of magnitude this page lists lengths between 10⁻¹⁰ m and 10⁻⁹ m (100 pm and 1 nm).

• 100 pm — 1 ångström
• 100 pm — covalent radius of sulfur atom
• 120 pm — van der Waals radius of a neutral hydrogen atom
• 126 pm — covalent radius of ruthenium atom
• 135 pm — covalent radius of technetium atom
• 153 pm — covalent radius of silver atom
• 154 pm — mode length of (C-C) covalent bond
• 155 pm — covalent radius of zirconium atom
• 175 pm — covalent radius of thulium atom
• 200 pm — highest resolution of a typical electron microscope
• 225 pm — covalent radius of caesium atom
• 340 pm — thickness of single layer graphene
• 356.68 pm — width of diamond cell (unit cell)
• 403 pm — width of lithium fluoride cell
• 500 pm — width of α helix protein
• 560 pm — width of sodium chloride cell
• 700 pm — width of glucose molecule
• 780 pm — mean width of quartz cell
• 820 pm — mean width of ice cell
• 900 pm — mean width of coesite cell
• 900 pm — width of sucrose molecule

Images for kids

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  Objects of sizes in different order of magnitude (at inconsistent intervals)

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  The silk for a spider's web is around 5–7μm wide.

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  Fog particles are around 10–50 μm long.

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  A paramecium is around 300 μm long.

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  An average red ant is about 5 mm long.

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  An average human fingernail is about 1 cm wide.

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  An adult human foot is about 28 centimetres long.

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  A blue whale has been measured as 33 metres long; this drawing compares its length to that of a human diver and a dolphin.

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  The Great Pyramid of Giza is 138.8 metres high.

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  The Strait of Gibraltar is 13 kilometres wide.

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  Distance marker on the Rhine: 36 (XXXVI) myriametres from Basel. The stated distance is 360 km; comma is the decimal separator in Germany.

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  The Suez Canal is 163 kilometres long.

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  Small planets, the Moon and dwarf planets in our solar system have diameters from one to ten million metres. Top row: Mars (left), Mercury (right); bottom row: Moon (left), Pluto (center), and Haumea (right), to scale.

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  Planets from Venus up to Uranus have diameters from ten to one hundred million metres. Top row: Uranus (left), Neptune (right); middle row: Earth (left), Sirius B (center), and Venus (right), to scale

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  The Earth-Moon orbit, Saturn, OGLE-TR-122b, Jupiter, and other objects, to scale. Click on image for detailed view and links to other length scales.

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  13 things in the gigameter group

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  Rigel and Aldebaran (top left and right) compared to smaller stars, the Sun (very small dot in lower middle, with orbit of Mercury as yellow ellipse) and transparent sphere with radius of one light-minute.

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  From largest to smallest: Jupiter's orbit, red supergiant star Betelgeuse, Mars' orbit, Earth's orbit, star R Doradus, and orbits of Venus, Mercury. Inside R Doradus's depiction are the blue giant star Rigel and red giant star Aldebaran. The faint yellow glow around the Sun represents one light-minute. Click image to see more details and links to their scales.

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  8 things in the terameter group

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  Sedna's orbit (left) is longer than 100 Tm, but other lengths are between 10 and 100 Tm: Comet Hale-Bopp's orbit (lower, faint orange); one light-day (yellow spherical shell with yellow Vernal point arrow as radius); the heliosphere's termination shock (blue shell); and other arrows show positions of Voyager 1 (red) and Pioneer 10 (green). Click on image for larger view and links to other scales.

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  The largest yellow sphere indicates one light month distance from the Sun. Click the image for larger view, more details and links to other scales.

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  Largest circle with yellow arrow indicates one light-year from Sun; Cat's Eye Nebula on left and Barnard 68 in middle are depicted in front of Comet 1910 A1's orbit. Click image for larger view, details and links to other scales.

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  Objects with size order of magnitude 1e16m: Ten light-years (94.6 Pm) radius circle with yellow Vernal Point arrow; Bubble Nebula (NGC 7635), left; Dumbbell Nebula (NGC 6853), right; one light-year shell lower right with the smaller Cat's Eye Nebula (NGC_6543) and Barnard 68 adjacent.

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  Lengths with order of magnitude 1e17m: yellow Vernal Point arrow traces hundred light-year radius circle with smaller ten light-year circle at right; globular cluster Messier 5 in background; 12 light-year radius Orion Nebula middle right; 50-light-year-wide view of the Carina Nebula bottom left; Pleiades cluster and Bubble nebula with similar diameters each around 10 light-years bottom right; grey arrows show distances from Sun to stars Aldebaran (65 light-years) and Vega (25 light-years).

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  Lengths with order of magnitude 1e18m: thousand light-year radius circle with yellow arrow and 100 light-year circle at right with globular cluster Messier 5 within and Carina Nebula in front; globular cluster Omega Centauri to left of both; part of the 1,400-light-year-wide Tarantula Nebula fills the background.

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  The universe within 1 billion light-years of Earth