By Nuno Crato
This is a e-book of mathematical tales — humorous and complicated mathematical tales. They inform of villains who try and thieve secrets and techniques, heroes who encode their messages, and mathematicians who spend years on finish looking for the right way to pile oranges.
There also are tales approximately road confusions happening while the principles of Cartesian geometry are overlooked, small-change error because of lack of know-how of old paradoxes, and blunders in calendars coming up from terrible numerical approximations.
This booklet is ready the facility and wonder of arithmetic. It exhibits arithmetic in motion, defined in a fashion that everyone can comprehend. it's a publication for engaging children and encouraging teachers.
Nuno Crato is a number one technology author and mathematician, whose enjoyable essays have gained a few foreign awards.
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Extra info for Figuring It Out: Entertaining Encounters with Everyday Math
THE NONIUS SCALE In the 16th century, sea navigation still depended on mariner’s astrolabes and other relatively primitive instruments for measuring astronomical altitudes. The precision of these instruments was greatly limited by the graduated scale they used, which was normally based on a minimum unit of one degree and could be subdivided into half-degrees but not into smaller units, as the measurement marks engraved in the metal instruments had to have a certain width, and began to become indistinguishable if placed too close together.
Here, for example, if we want to introduce number 1, we’d have four options. Some people choose one cell tentatively, and then scratch it, if necessary (in computation we call this a “backtracking”). The puzzle I am about to describe has an intriguing name, and one you’ve surely heard about. You can write it as “sudoku” or “su doku”, as you prefer. It comes from the Japanese: “su” means “number” or “counting”, and “doku” means “single” or “unique”. In order to N. 1007/978-3-642-04833-3_8, C Springer-Verlag Berlin Heidelberg 2010 31 32 FIGURING IT OUT complete this puzzle, you have to insert numbers into empty boxes.
The short answer is, not really, though the reality, while less frightening, is much more fascinating. S. Department of Defense in the 1970s and 1980s, but which is accessible to the public. The system consists of three elements: a network of satellites, terrestrial control stations, and users operating GPS receivers. The network of satellites comprises 24 devices positioned across six diﬀerent orbital planes in such a way that, no matter where you are in the world, it is always possible to receive signals from at least four of the twenty-four satellites at any given time.