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A number which is not happy is called sad or unhappy. More generally, a b {\displaystyle b} - happy number is a natural number in a given number base b {\displaystyle b} that eventually reaches 1 when iterated over the perfect digital invariant function for p = 2 {\displaystyle p=2} .
Although the "paradox of length" was previously noted by Hugo Steinhaus, [1] the first systematic study of this phenomenon was by Lewis Fry Richardson, [2] [3] and it was expanded upon by Benoit Mandelbrot. [4] [5] The measured length of the coastline depends on the method used to measure it and the degree of cartographic generalization. Since ...
The beard-second is a unit of length inspired by the light-year, but applicable to extremely short distances such as those in integrated circuits. It is the length an average beard grows in one second. Kemp Bennett Kolb defines the distance as exactly 100 angstroms (10 nanometres), [8] as does Nordling and Österman's Physics Handbook. [9]
In graph theory and theoretical computer science, the longest path problem is the problem of finding a simple path of maximum length in a given graph.A path is called simple if it does not have any repeated vertices; the length of a path may either be measured by its number of edges, or (in weighted graphs) by the sum of the weights of its edges.
Maximum diameter of Thiomargarita namibiensis, the second largest bacterium ever discovered 10 −3: 1 millimeter ~5 mm Length of an average flea is 1–10 mm (usually <5 mm) [27] 2.54 mm One-tenth inch; distance between pins in DIP (dual-inline-package) electronic components 5.70 mm Diameter of the projectile in 5.56×45mm NATO ammunition 10 −2
Psychologists Arthur and Elaine Aron are known for research behind the “36 Questions That Lead to Love.” They share how their relationship has lasted over 50 years.
Image credits: dreadpiraterose #3. The bride did not show up. The guests were at the church, along with the bride’s and groom’s families. The bride’s maids were missing, but the groom and ...
The number fitting this definition later became 12407 from November 2009 until at least November 2011, then 13794 as of April 2012, until it appeared in sequence OEIS: A218631 as of 3 November 2012. Since November 2013, that number was 14228, at least until 14 April 2014. [5] In May 2021, the number was 20067.