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Tau Day, also known as Two-Pi Day, [35] is observed on June 28 (6/28 in the month/day format). [36] The number š , denoted by the Greek letter tau , is the ratio of a circle's circumference to its radius ; it equals 2 π , a common multiple in mathematical formulae, and approximately equals 6.28.
Pi Day itself dates to 1988, when physicist Larry Shaw began celebrations at the Exploratorium science museum in San Francisco. The holiday didn’t really gain national recognition though until ...
The Exploratorium campus comprises 330,000 sq ft (31,000 m 2) of indoor and outdoor exhibit space and includes 1.5 acres (0.61 ha) of freely accessible public space. The exhibits are housed in and around Pier 15, which extends over 800 ft (240 m) over the Bay. [14] The Exploratorium at Pier 15 was designed by architectural firm EHDD. [15]
Tuesday: Old English TÄ«wesdæg (pronounced [ĖtiĖwezdæj]), meaning "Tiw's day". Tiw (Norse Týr) was a one-handed god associated with single combat and pledges in Norse mythology and also attested prominently in wider Germanic paganism. The name of the day is also related to the Latin name diÄs MÄrtis, "Day of Mars" (the Roman god of war).
Google Dictionary is an online dictionary service of Google that can be accessed with the "define" operator and other similar phrases [note 1] in Google Search. [2] It is also available in Google Translate and as a Google Chrome extension. The dictionary content is licensed from Oxford University Press's Oxford Languages. [3]
Every national park in America is free to visit on a handful of days each year. Here are the dates for 2023. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ...
There's a new addition to the entrance fee-free days next year: Juneteenth, which became recognized as a federal holiday in 2021. One veteran's legacy: Free, lifetime national parks access for ...
It is a sister site to The Free Dictionary and usage examples in the form of "references in classic literature" taken from the site's collection are used on The Free Dictionary 's definition pages. In addition, double-clicking on a word in the site's collection of reference materials brings up the word's definition on The Free Dictionary.