- Orders of magnitude (density)
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List of orders of magnitude for density less than 1 kg/m3 Factor Multiple Value Item 10−27 1 yoctogram yg/m3 1 × 10−27 kg/m3 Very approximate density of the universe 10−24 1 zeptogram zg/m3 10−22 100 zg/m3 1 × 10−22 kg/m3 Probable lowest observed density of space in galactic spiral arm (1 hydrogen atom every 16 cubic centimeters) 10−21 1 attogram ag/m3 10−20 10−19 10−18 1 femtogram fg/m3 1 × 10−18 kg/m3 Observed density of space in core of galaxy (600 hydrogen atoms in every cubic centimetre) Best vacuum from a laboratory (1 pPa)[1] 10−17 10−16 10−15 1 picogram pg/m3 10−14 2.0 × 10−14 kg/m3 (2.0 × 10−17 g/cm3) density of Sun's corona[2] 10−13 1.0 × 10−13 kg/m3 (1.0 × 10−16 g/cm3) density at top of solar transition region[2] 10−12 1 nanogram ng/m3 10−11 1.0 × 10−11 kg/m3 (1.0 × 10−14 g/cm3) density at bottom of solar transition region[2] 10−10 10−9 1 microgram μg/m3 10−8 10−7 10−6 1 milligram mg/m3 10−5 1.34 × 10−5 kg/m3 Earth atmosphere at 82 kilometre altitude;
star Mu Cephei's approximate mean density10−4 0.1 gram g/m3 1.09 × 10−4 kg/m3 Earth atmosphere at 68 kilometre altitude; 2.0 × 10−4 kg/m3 (2.0 × 10−7 g⋅cm−3) Density of Solar photosphere–chromosphere boundary[2] 4.0 × 10−4 kg/m3 (4.0 × 10−7 g⋅cm−3) Density of Solar photosphere's lower boundary[2] 10−3 1 gram g/m3 1 gram g/m3 Vacuum from a mechanical vacuum pump;
density of Sun just below its photosphere[2]10−2 10 gram g/m3 1.35 × 10−2 kg/m3 Earth atmosphere at 32 kilometre altitude 90 g/m3 Hydrogen gas, the least dense substance at STP 10−1 1.66 × 10−2 Earth atmosphere at 16 kilometre altitude[citation needed] List of orders of magnitude for density 1 kg/m3 and greater Factor Multiple Value Item 100 1 kilogram kg/m3 0.9 kg/m3 = 0.0009 g/cm3 Ultralight metallic microlattice.[3] 1.48 kg/m3 = 0.00148 g/cm3 Earth atmosphere at sea level 3 kg/m3 = 0.003 g/cm3 date=February 2009|reason=looks like an extremely low, not typical, density; aerogel is 101 102 534 kg/m3 = 0.534 g/cm3 Lithium at near room temperature 103 1 megagram Mg/m3
1 tonne t/m31000 kg/m3 = 1 g/cm3 Liquid water at 4 °C 1010 kg/m3 = 1.01 g/cm3 Average human body 1400 kg/m3 = 1.4 g/cm3 Average density of Sun 104 10000 kg/m3 10490 kg/m3 = 10.49 g/cm3 Silver (Ag) 11340 kg/m3 = 11.34 g/cm3 Lead (Pb) 13534 kg/m3 = 13.534 g/cm3 Mercury (Hg) 19100 kg/m3 = 19.1 g/cm3 Uranium (U) 19250 kg/m3 = 19.25 g/cm3 Tungsten (W) 19300 kg/m3 = 19.3 g/cm3 Gold (Au) 21450 kg/m3 = 21.45 g/cm3 Platinum (Pt) 22560 kg/m3 = 22.56 g/cm3[4] Iridium (Ir) 22590 kg/m3 = 22.59 g/cm3[4] Osmium (Os), the densest known substance at STP 105 150,000 kg/m3 = 150 g/cm3 Core of the Sun 106 1 gigagram Gg/m3 107 108 109 1 teragram Tg/m3 White dwarf 1010 1011 1012 1 petagram Pg/m3 1013 1 × 1013 kg/m3 2 × 1013 kg/m3 Universe at end of electroweak epoch (approximately) 1014 1015 1 exagram Eg/m3 1016 1017 2 × 1017 kg/m3 Atomic nuclei and neutron stars 1018 1 zettagram Zm/m3 1019 1020 1021 1 yottagram Yg/m3 1023 1023 kg/m3 Density of a hypothetical preon star 1096 5.1 × 1096 kg/m3 Planck density ∞ ∞ kg/m3 Density of a black hole at singularity Notes
- ^ http://dx.doi.org/10.1016/0042-207X(93)90084-N
- ^ a b c d e f "SP-402 A New Sun: The Solar Results From Skylab". http://history.nasa.gov/SP-402/p2.htm.
- ^ "Ultralight Metallic Microlattices". http://www.sciencemag.org/content/334/6058/962.
- ^ a b Arblaster, J. W. (1989). "Densities of osmium and iridium: recalculations based upon a review of the latest crystallographic data" (PDF). Platinum Metals Review 33 (1): 15. http://www.platinummetalsreview.com/pdf/pmr-v33-i1-014-016.pdf. "at 20oC"
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