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A248922 Number of wavelengths of the orange-red line of a krypton isotope with mass number 86 in a vacuum. 1
1, 6, 5, 0, 7, 6, 3, 7, 3 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET
7,2
COMMENTS
In 1960, the meter was redefined in terms of a number of wavelengths of the orange-red spectral line in the electromagnetic radiation emanating from an excited atom of krypton-86.
Since 1983, it has been defined as the distance light travels in a vacuum in 1/299,792,458 seconds. - Jon Perry, Oct 18 2014
LINKS
Wikipedia, Krypton
Wikipedia, Metre
Wikipedia, Speed of light
EXAMPLE
1650763.73...
CROSSREFS
Cf. A003678.
Sequence in context: A340443 A096434 A193355 * A316253 A352527 A261992
KEYWORD
nonn,cons
AUTHOR
STATUS
approved

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)