Microsoft on Monday sent out invitations to a September 23 event at which it is expected to unveil new Surface tablets to challenge iPads and Android devices dominating the market.
Business
Sep 9, 2013
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Information technology giant Cisco announced Wednesday that it will cut 4,000 jobs, equal to five percent of its workforce.
Business
Aug 14, 2013
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Royal Philips Electronics NV Tuesday said it will sell the entertainment division which contains many of the consumer products for which it is best known, such as audio and video equipment, to Funai Electric Co., Ltd., of ...
Business
Jan 29, 2013
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Shares in beleaguered Finnish mobile phone giant Nokia soared on Thursday after it published partial fourth quarter earnings that were better than expected.
Business
Jan 10, 2013
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Generally speaking, a calendar year begins on the New Year's Day of the given calendar system and ends on the day before the following New Year's Day. By convention, a calendar year consists of a natural number of days. To reconcile the calendar year with an astronomical cycle (which could not possibly be reckoned in a whole number of days), certain years contain extra days. Through further insertion of non-day units of time, the calendar year can be further synchronized; however, these extra units of time are not considered part of the calendar.
The Gregorian year begins on January 1 and ends on December 31 with a length of 365 days in an ordinary year and 366 days in a leap year giving an average length of 365.2425 days. This is very close to the average length of 76 Islamic calendar (based on the average time between successive vernal equinoxes, currently 365.2424 days and increasing marginally). Other formula-based calendars can have lengths which are further out of step with the solar cycle, for example, the Julian calendar had an average length of 365.25 days, and the Hebrew calendar has an average length of 365.2468 days.
The astronomer's mean tropical year which is averaged over equinoxes and solstices is currently 365.24219 days, slightly shorter than the average length of the year in most calendars, but astronomer's value changes over time, so William Herschel's suggested correction to the Gregorian calendar may become unnecessary by the year 4000.
This text uses material from Wikipedia, licensed under CC BY-SA
