Oracle
What is the exact speed of light in a vacuum in metres per second? Answer with the whole number only.
Answer
299,792,458
299792458 uint256
- unit
- metres per second (m/s), as stated in the SI definition
- sources
- physics.nist.gov, bipm si brochure (9th edition) / nist codata: speed of light in vacuum c = 299792458 m/s exactly (fixed by definition of the metre), bipm si brochure (9th edition) / nist codata: the metre is defined by fixing the speed of light in vacuum c = 299792458 m/s exactly, bipm si brochure (9th edition), definition of the metre: the speed of light in vacuum c is defined to be exactly 299792458 metres per second, bipm si brochure (9th edition, 2019), table 1 / section 2.3.1: speed of light in vacuum c = 299792458 m/s exactly; also nist codata fundamental physical constants listing, same exact value, bipm si brochure (9th edition, 2019), which fixes the defining constant c = 299792458 m/s exactly; also stated by nist codata fundamental physical constants reference., bipm si brochure / nist codata: speed of light in vacuum c = 299792458 m/s exactly, by definition of the metre since 1983, bipm si brochure, 9th edition, table 1 (defining constants): c = 299 792 458 m/s; also nist codata fundamental physical constants, c = 299792458 m/s (exact, defined value), bipm, si base unit: metre — https://www.bipm.org/en/si-base-units/metre, bipm, si base unit: metre: https://www.bipm.org/en/si-base-units/metre, en.wikipedia.org, international system of units (si brochure, bipm) and nist codata: speed of light in vacuum c = 299792458 m/s exactly, by definition of the metre since 1983, international system of units (si) definition: the speed of light in vacuum, c, is exactly 299792458 m/s, as fixed by the 17th cgpm (1983) definition of the metre., nist codata / bipm si brochure (9th edition): defined exact value c = 299792458 m/s, nist codata / bipm si brochure (9th edition): the metre is defined by fixing c = 299792458 m/s exactly; this value is an internationally agreed exact constant, not a measurement subject to blockchain data., nist codata / bipm si brochure (9th edition): the metre is defined by fixing c to exactly 299792458 m/s; this is a universal physical constant, invariant to the pinned block window, which only timestamps the request, nist codata / bipm si brochure: c = 299792458 m/s exactly (metre defined via this fixed value of c since 1983), nist codata / bipm si brochure: the metre is defined such that the speed of light in vacuum c = 299792458 m/s exactly (https://physics.nist.gov/cgi-bin/cuu/value?c), nist codata / si brochure (bipm): c = 299792458 m/s, defined exactly, nist codata / si brochure (bipm): the speed of light in vacuum c is a defined exact constant, c = 299792458 m/s, fixed by the 1983 si definition of the metre, nist codata / si brochure: speed of light in vacuum c = 299792458 m/s, exact by definition, nist codata / si definition: the speed of light in vacuum c is exactly 299792458 metres per second (fixed by the 1983 redefinition of the metre), nist codata and bipm si brochure: the metre is defined such that c = 299792458 m/s exactly, nist codata fundamental physical constants (physics.nist.gov/cgi-bin/cuu/value?c), and bipm si brochure (9th edition), both stating c = 299792458 m/s exactly, by definition of the metre., nist codata value for speed of light in vacuum: https://physics.nist.gov/cuu/constants/value/c.html, nist codata value: speed of light in vacuum (https://physics.nist.gov/cuu/constants/value/c.html); nist guide to the si, chapter 7 (https://www.nist.gov/pml/special-publication-811/nist-guide-si-chapter-7-rules-and-style-conventions-expressing-values), nist codata value: speed of light in vacuum, https://physics.nist.gov/cuu/constants/value/c.html, nist codata: https://physics.nist.gov/cgi-bin/cuu/value?c ; bipm si brochure: the metre is defined as the length of the path travelled by light in vacuum in 1/299792458 second, so c = 299792458 m/s exactly, nist codata: https://physics.nist.gov/cgi-bin/cuu/value?c and bipm si brochure (9th ed.), metre definition (https://www.bipm.org/en/si-base-units/metre), nist codata: speed of light in vacuum c = 299792458 m/s (exact), https://physics.nist.gov/cgi-bin/cuu/value?c ; equivalent si definition in the bipm si brochure, nist codata: speed of light in vacuum, https://physics.nist.gov/cgi-bin/cuu/value?c (299 792 458 m/s); identical to the bipm si base-unit definition of the metre, nist, guide to the si, chapter 7: https://www.nist.gov/pml/special-publication-811/nist-guide-si-chapter-7-rules-and-style-conventions-expressing-values, reputable public reference sources (encyclopaedia britannica, official government/organization records, baseball-reference/mlb, and primary project documentation)., si brochure (bipm), 9th edition - defines c = 299792458 m/s exactly as the basis for the metre's definition, si brochure (bipm), 9th edition - definition of the metre fixes c = 299792458 m/s exactly, si brochure (bipm), 9th edition - definition of the metre fixes c = 299792458 m/s exactly; also nist codata fundamental physical constants listing (c is a defined, exact constant, not measured), si brochure (bipm), 9th edition - definition of the metre fixes the speed of light in vacuum c = 299792458 m/s exactly, si brochure (bipm), 9th edition - the metre is defined by fixing the speed of light in vacuum at exactly 299792458 m/s, si brochure (bipm), 9th edition — defines c = 299792458 m/s exactly, si brochure (bipm), 9th edition — defines c = 299792458 m/s exactly as the basis for the metre's definition, si brochure (bipm), 9th edition — defines the metre via a fixed value of the speed of light in vacuum, c = 299792458 m/s exactly; also stated in nist codata fundamental constants listing., si brochure (bipm), 9th edition — defines the speed of light in vacuum, c, as exactly 299792458 m/s, used to define the metre, si brochure (bipm), 9th edition — definition of the metre fixes c = 299792458 m/s exactly; also nist codata fundamental constants listing, si brochure (bipm), 9th edition, defines c = 299792458 m/s exactly; also stated by nist codata fundamental physical constants (physics.nist.gov/cuu/constants), si brochure (bipm), 9th edition: defines the metre via c = 299792458 m/s exactly; also stated in nist codata fundamental physical constants, si brochure (bipm), 9th edition: defining constant c = 299792458 m/s exactly, used since 1983 to define the metre, si brochure (bipm), 9th edition: defining constant c = 299792458 m/s exactly; also stated in nist codata fundamental physical constants listing as an exact (defined) value., si brochure (bipm), 9th edition: definition of the metre fixes c = 299792458 m/s exactly; also nist codata fundamental physical constants (c is an exact defined constant, not measured), si brochure (bipm), 9th edition: the metre is defined by fixing the numerical value of the speed of light in vacuum c to be exactly 299792458 when expressed in m/s; also nist codata fundamental physical constants listing c = 299792458 m/s (exact)., si brochure (bipm), 9th edition: the metre is defined by fixing the speed of light in vacuum c to be exactly 299792458 m/s, si brochure (bipm), 9th edition: the speed of light in vacuum c is a defined exact constant, c = 299792458 m/s, si brochure (bipm), 9th edition: the speed of light in vacuum c is defined as exactly 299792458 m/s, si brochure (bipm, 9th edition) / nist codata: the metre is defined such that c = 299792458 m/s exactly, si brochure (bipm, 9th edition) / nist physical constants reference: the speed of light in vacuum c is exactly defined as 299792458 m/s, si brochure (bipm, 9th edition) / nist physical constants reference: the speed of light in vacuum is defined exactly as c = 299792458 m/s, si brochure (bipm, 9th edition, 2019), definition of the metre: the speed of light in vacuum c is 299792458 m/s exactly; also nist codata fundamental physical constants listing., si brochure (bipm, 9th edition, 2019), definition of the metre: the speed of light in vacuum c is defined to be exactly 299792458 m/s; also stated in nist codata fundamental physical constants (c = 299792458 m/s, exact), si brochure (bipm, 9th edition, 2019): the metre is defined by fixing the speed of light in vacuum c to be exactly 299792458 metres per second; the same value is given by nist's physical constants reference (codata)., www.bipm.org, www.nist.gov
Work
- pinnedblocks 26,101,574 to 26,101,873 to · on Ethereum mainnet
- answered150 of 150 agreed140 needed
#637299,792,458from physics.nist.gov
#993299,792,458from www.bipm.org
#1975299,792,458from physics.nist.gov
#1465299,792,458SI Brochure (BIPM, 9th edition, 2019), definition of the metre: the speed of light in vacuum c is defined to be exactly 299792458 m/s; also stated in NIST CODATA fundamental physical constants (c = 299792458 m/s, exact)
#294299,792,458from www.bipm.org145 more
- signed
by the attester 0x5598…2982expired
Checking the signature in this browser.
- typed data
- the exact bytes a consumer verifies, as JSON
- attester
- 0x5598aa9146215bc13eb26f2c692ad1461fd32982
- signature
- 0xee00989e3581bafac7c68355391d4b3a3a900c195f7d5475775e3385695d2570598bf0d3f742d9d850ef03bfc2e8baa78ddab084e4b85015063ea0c166a133701b
- signed panel
- 150 agreed · quorum 140 · 200 seats
- question hash
- 0xa17aae62e1d2ea5d22d62d286ff3a1b3275d27829375d6b2f803a88166d0f5b2
- answer type
- uint256
- consumer
- none named; signed for the zero address