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  2. Clock angle problem - Wikipedia

    en.wikipedia.org/wiki/Clock_angle_problem

    The angle is typically measured in degrees from the mark of number 12 clockwise. The time is usually based on a 12-hour clock. A method to solve such problems is to consider the rate of change of the angle in degrees per minute. The hour hand of a normal 12-hour analogue clock turns 360° in 12 hours (720 minutes) or 0.5° per minute.

  3. Polar alignment - Wikipedia

    en.wikipedia.org/wiki/Polar_alignment

    For the evaluation of the images, a special Excel spreadsheet has been developed. For three stars, the rectangular X-Y-coordinates are measured at both ends of their trails or on both static images. In addition, we need the current right ascension and declination of the 3 stars, the longitude and latitude of the observatory, and the date and ...

  4. Equation of time - Wikipedia

    en.wikipedia.org/wiki/Equation_of_time

    Animation showing equation of time and analemma path over one year.. The United States Naval Observatory states "the Equation of Time is the difference apparent solar time minus mean solar time", i.e. if the sun is ahead of the clock the sign is positive, and if the clock is ahead of the sun the sign is negative.

  5. Sunrise equation - Wikipedia

    en.wikipedia.org/wiki/Sunrise_equation

    In the equation given at the beginning, the cosine function on the left side gives results in the range [-1, 1], but the value of the expression on the right side is in the range [,]. An applicable expression for ω ∘ {\displaystyle \omega _{\circ }} in the format of Fortran 90 is as follows:

  6. Equation clock - Wikipedia

    en.wikipedia.org/wiki/Equation_clock

    An equation clock is a mechanical clock which includes a mechanism that simulates the equation of time, so that the user can read or calculate solar time, as would be shown by a sundial. The first accurate clocks, controlled by pendulums, were patented by Christiaan Huyghens in 1657. For the next few decades, people were still accustomed to ...

  7. More work, same salary. How employees should respond to a ...

    www.aol.com/more-same-salary-employees-respond...

    Some of that may come from dry-promoted employees using their new title to find work willing to pay more. "When you do these promotions, you’re making them more marketable in the external ...

  8. Hour angle - Wikipedia

    en.wikipedia.org/wiki/Hour_angle

    The cosine of the hour angle (cos(h)) is used to calculate the solar zenith angle. At solar noon, h = 0.000 so cos(h) = 1, and before and after solar noon the cos(± h) term = the same value for morning (negative hour angle) or afternoon (positive hour angle), so that the Sun is at the same altitude in the sky at 11:00AM and 1:00PM solar time. [5]

  9. FBI seizes websites that North Koreans allegedly used to ...

    www.aol.com/fbi-seizes-websites-north-koreans...

    The FBI has seized multiple websites that North Korean operatives used to impersonate legitimate US and Indian businesses in a likely effort to raise money for the nuclear armed-North Korean ...

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