When.com Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. Global Positioning System - Wikipedia

    en.wikipedia.org/wiki/Global_Positioning_System

    [148] [149] GPS signals have been reported to have been jammed many times over the years for military purposes. Russia seems to have several objectives for this approach, such as intimidating neighbors while undermining confidence in their reliance on American systems, promoting their GLONASS alternative, disrupting Western military exercises ...

  3. Quizlet - Wikipedia

    en.wikipedia.org/wiki/Quizlet

    Quizlet was founded in 2005 by Andrew Sutherland as a studying tool to aid in memorization for his French class, which he claimed to have "aced". [ 6 ] [ 7 ] [ 8 ] Quizlet's blog, written mostly by Andrew in the earlier days of the company, claims it had reached 50,000 registered users in 252 days online. [ 9 ]

  4. Geosynchronous orbit - Wikipedia

    en.wikipedia.org/wiki/Geosynchronous_orbit

    Animation (not to scale) showing geosynchronous satellite orbiting the Earth. A geosynchronous orbit (sometimes abbreviated GSO) is an Earth-centered orbit with an orbital period that matches Earth's rotation on its axis, 23 hours, 56 minutes, and 4 seconds (one sidereal day). The synchronization of rotation and orbital period means that, for ...

  5. Day - Wikipedia

    en.wikipedia.org/wiki/Day

    A day is the time period of a full rotation of the Earth with respect to the Sun. On average, this is 24 hours (86,400 seconds). As a day passes at a given location it experiences morning, afternoon, evening, and night. This daily cycle drives circadian rhythms in many organisms, which are vital to many life processes.

  6. Syzygy (astronomy) - Wikipedia

    en.wikipedia.org/wiki/Syzygy_(astronomy)

    In astronomy, a syzygy (/ ˈ s ɪ z ə dʒ i / SIZ-ə-jee; from Ancient Greek συζυγία (suzugía) 'union, yoking', expressing the sense of σύν (syn-"together") and ζυγ- (zug-"a yoke") [1] [2]) is a roughly straight-line configuration of three or more celestial bodies in a gravitational system.

  7. Lunar day - Wikipedia

    en.wikipedia.org/wiki/Lunar_day

    A lunar day is the time it takes for Earth's Moon to complete on its axis one synodic rotation, meaning with respect to the Sun. Informally, a lunar day and a lunar night is each approx. 14 Earth days. The formal lunar day is therefore the time of a full lunar day-night cycle.

  8. 50 Valentine's Day trivia questions and answers you're sure ...

    www.aol.com/news/50-valentines-day-trivia...

    Why does chocolate melt in your hand? Answer: The melting point of chocolate is between 86 and 90 degrees Fahrenheit, which is lower than the average body temperature of 98.6 degrees.

  9. Diurnal motion - Wikipedia

    en.wikipedia.org/wiki/Diurnal_motion

    In astronomy, diurnal motion (from Latin diurnus 'daily', from Latin diēs 'day') is the apparent motion of celestial objects (e.g. the Sun and stars) around Earth, or more precisely around the two celestial poles, over the course of one day. It is caused by Earth's rotation around its axis, so almost every star appears to follow a circular arc ...