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Pilot balloon slide rules were used by meteorologists in weather services to determine the upper wind velocities from an ascending hydrogen or helium-filled pilot balloon. [27] The E6-B is a circular slide rule used by pilots and navigators. Circular slide rules to estimate ovulation dates and fertility are known as wheel calculators. [28]
A.Ranicki On signatures of knots Slides of lecture given in Durham on 20 June 2010. H.Trotter , Homology of group systems with applications to knot theory, Ann. of Math. (2) 76, 464-498 (1962)
However, if the fraction 1/1 is replaced by the fraction 2/2, which is an equivalent fraction denoting the same rational number 1, the mediant of the fractions 2/2 and 1/2 is 3/4. For a stronger connection to rational numbers the fractions may be required to be reduced to lowest terms , thereby selecting unique representatives from the ...
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A simple fraction (also known as a common fraction or vulgar fraction, where vulgar is Latin for "common") is a rational number written as a/b or , where a and b are both integers. [9] As with other fractions, the denominator (b) cannot be zero. Examples include 1 / 2 , − 8 / 5 , −8 / 5 , and 8 / −5
As we slide into December, many of us who bypassed the much-hyped Giving Tuesday, me included, are focusing on making charitable contributions by year-end to reduce taxes or simply revel in that ...
The two-time Oscar nominee portrayed Lord Voldemort (also known as He Who Must Not Be Named) in four of the eight films in the blockbuster franchise: first in 2005's Harry Potter and the Goblet of ...
A slide rule has logarithmic scales, and nomograms often employ logarithmic scales. The geometric mean of two numbers is midway between the numbers. Before the advent of computer graphics, logarithmic graph paper was a commonly used scientific tool.
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