Od centyliona do Google

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Dzisiaj na lekcji dzieci miały podać przykłady liczb przeciwnych. Jedna z uczennic w klasie piątej podała centylion i minus centylion. Zapytałam się czy umie tą liczbę zapisać. Ola stwierdziła, że tak. Podeszła i zaczęła pisać jeden i kilka zer. Po chwili zapytała się, czy rzeczywiście ma zapisać 600 zer, Powiedziałam jej, że nie musi, bo już wiedziałam, że potrafi. Dzieci uwielbiają duże liczby. Intrygują je, zadziwiają. Dlatego też postanowiłam napisać tego posta. Jest taka liczba, która nazywa się Googol. Jej nazwa powstała dzięki dziewięcioletniemu chłopcu Miltonie Sirotta w 1938 roku. Był on siostrzeńcem amerykańskiego matematyka Edwarda Kasnera. Ów chłopiec któregoś dnia zapytał swojego wujka o nazwę wielkiej liczby, a ten odpowiedział mu „googol”. Kasner wykorzystał to pojęcie w swojej książce „Matematyka i wyobraźnia” (1940). I tak dziecięca wyobraźnia wzbogaciła matematykę. Ale ile to jest googol? Ta liczba to 10 do potęgi 100, czyli:   10 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 Na koniec mała ciekawostka związana z tą liczbą. Nazwa wyszukiwarki internetowej Google ma związek z liczbą googol. Kiedy Larry Page wymyślał nazwy dla nowego projektu poprosił kolegę z pokoju Seana Andersona o wypisanie propozycji na tablicy. W końcu podali nazwę GoogolPlex. Sprawdzili domenę w skróconej formie w Internecie i zarejestrowali. Popełnili jednak błąd, bo wpisali znane wszystkim google.com, zamiast googol.com, która była już w tym czasie zarejestrowana. W ten sposób jedna z najpopularniejszych witryn internetowych na świecie ma błąd z nazwie.

Kinga Matelska- Graf

więcej czytaj na http://www.kingaimatematyka.pl

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