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Doomsday rule. The doomsday's anchor day calculation is effectively calculating the number of days between any given date in the base year and the same date in the current year, then taking the remainder modulo 7. When both dates come after the leap day (if any), the difference is just 365y + y / 4 (rounded down). But 365 equals 52 × 7 ...
The "doomsday" concept in the doomsday algorithm is mathematically related to the Dominical letter. Because the letter of a date equals the dominical letter of a year (DL) plus the day of the week (DW), and the letter for the doomsday is C except for the portion of leap years before February 29 in which it is D, we have:
Bernoulli's principle can be used to calculate the lift force on an airfoil, if the behaviour of the fluid flow in the vicinity of the foil is known. For example, if the air flowing past the top surface of an aircraft wing is moving faster than the air flowing past the bottom surface, then Bernoulli's principle implies that the pressure on the ...
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A quatrain by Nostradamus that stated the "King of Terror" would come from the sky in "1999 and seven months" was frequently interpreted as a prediction of doomsday in July 1999. [151] 18 Aug 1999 The Amazing Criswell: The predicted date of the end of the world, according to this psychic well known for predictions. [152] 11 Sep 1999 Philip Berg
In meteorology, Buys Ballot's law (Dutch pronunciation: [ˈbœyz bɑˈlɔt]) may be expressed as follows: In the Northern Hemisphere, if a person stands with their back to the wind, the atmospheric pressure is low to the left, high to the right. [1] This is because wind travels counterclockwise around low pressure zones in the Northern Hemisphere.
The E-4B "Nightwatch" is also known as the "doomsday plane." ... It is the US Air Force's most expensive plane to operate, at $159,529 per hour. ... Take a look inside the top-secret aircraft.
The Doomsday clock was set at 89 seconds to midnight on Tuesday morning, putting it the closest the world has ever been to what scientists deem "global catastrophe." ... moves the hand of the ...