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The scale of the challenge can be seen from how some authors have argued that new early-universe physics alone is not sufficient; [79] [80] while other authors argue that new late-universe physics alone is also not sufficient. [81] Nonetheless, astronomers are trying, with interest in the Hubble tension growing strongly since the mid 2010s. [68]
Several languages of Wikipedia also maintain a reference desk, where volunteers answer questions from the general public. According to a study by Pnina Shachaf in the Journal of Documentation , the quality of the Wikipedia reference desk is comparable to a standard library reference desk , with an accuracy of 55 percent.
0 (zero) is a number representing an empty quantity.Adding 0 to any number leaves that number unchanged; in mathematical terminology, 0 is the additive identity of the integers, rational numbers, real numbers, and complex numbers, as well as other algebraic structures.
According to the Soviets, of approximately 183,000 Crimean Tatars, 20,000 or 10% of the entire population served in German battalions, [41] though the figure in question is derived from a single SS report on how many individuals were expected to be willing to collaborate and is contradicted by official statistical records, which suggest the ...
Gottfried Wilhelm Leibniz or Leibnitz [a] (1 July 1646 [O.S. 21 June] – 14 November 1716) was a German polymath active as a mathematician, philosopher, scientist and diplomat who is credited, alongside Sir Isaac Newton, with the discovery of calculus in addition to many other branches of mathematics, such as binary arithmetic, and statistics.
These unimpressive study habits made sitting his finals a challenge, and he decided to answer only theoretical physics questions rather than those requiring factual knowledge. A first-class degree was a condition of acceptance for his planned graduate study in cosmology at the University of Cambridge .
The observable universe is a spherical region of the universe consisting of all matter that can be observed from Earth or its space-based telescopes and exploratory probes at the present time; the electromagnetic radiation from these objects has had time to reach the Solar System and Earth since the beginning of the cosmological expansion.