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The following list shows different orders of magnitude of entropy.

Factor (J K−1) Value Item
10−24 9.5699×10−24 J K−1 Entropy equivalent of one bit of information, equal to k times ln(2)[1]
10−23 1.381×10−23 Planck entropy
1 5.74 J K−1 Standard entropy of 1 mole of graphite[2]
1033 ≈ 1035 J K−1 Entropy of the Sun (given as ≈ 1042 erg K−1 in Bekenstein (1973))[3]
1054 1.5 × 1054 J K−1 Entropy of a black hole of one solar mass (given as ≈ 1060 erg K−1 in Bekenstein (1973))[3]
1081 4.3 × 1081 J K−1 One estimate of the theoretical maximum entropy of the universe[4][5]

See also

Orders of magnitude (data), relates to information entropy
Order of magnitude (terminology)


Jean-Bernard Brissaud (14 February 2005). "The Meaning of Entropy" (PDF). Entropy, 2005, 7[1], 68–96. Retrieved 2010-04-21. page 72 (page 5 of pdf)
Chung Chieh. "Entropy: A Study Guide". Retrieved 2010-04-21.
Jacob D. Bekenstein (1973). "Black Holes and Entropy" (PDF). Physical Review D. 7 (8): 2333–2346. Bibcode:1973PhRvD...7.2333B. doi:10.1103/PhysRevD.7.2333. Archived from the original (PDF) on 2010-05-23.
Chas A. Egan; Charles H. Lineweaver (25 January 2010). "A Larger Estimate of the Entropy of the Universe". The Astrophysical Journal. 710 (2): 1825–1834. arXiv:0909.3983. Bibcode:2010ApJ...710.1825E. doi:10.1088/0004-637X/710/2/1825. "3.1 x 10^104k"

Calculated: 3.1e104 * k = 3.1e104 * 1.381e-23 J/K = 4.3e81 J/K


Orders of magnitude

Acceleration Angular momentum Area Bit rate Charge Computing Currency Current Data Density Energy / Energy density Entropy Force Frequency Illuminance Length Luminance Magnetic field Mass Molarity Numbers Power Pressure Probability Radiation Sound pressure Specific heat capacity Speed Temperature Time Voltage

See also

Back-of-the-envelope calculation Fermi problem Powers of 10 and decades
10th 100th 1000000th Billionth Trillionth Metric (SI) prefix Macroscopic scale Microscopic scale Quantum realm


Astronomical system of units Earth's location in the Universe Cosmic View (1957 book) To the Moon and Beyond (1964 film) Cosmic Zoom (1968 film) Powers of Ten (1968 and 1977 films) Cosmic Voyage (1996 documentary) Cosmic Eye (2012)

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