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  2. List of educational software - Wikipedia

    en.wikipedia.org/wiki/List_of_educational_software

    1.10 Literacy. 1.11 Managed learning environments. ... Download QR code; Print/export ... Back in Time (iPad) Balance of Power;

  3. Speed of light - Wikipedia

    en.wikipedia.org/wiki/Speed_of_Light

    By combining many such measurements, a best fit value for the light time per unit distance could be obtained. For example, in 2009, the best estimate, as approved by the International Astronomical Union (IAU), was: [102] [103] light time for unit distance: t au = 499.004 783 836 (10) s, c = 0.002 003 988 804 10 (4) AU/s = 173.144 632 674 (3) AU/d.

  4. These Calculators Make Quick Work of Standard Math ... - AOL

    www.aol.com/best-calculators-students...

    FX-9750GII Graphing Calculator. One of our favorite graphing calculators, the Casio FX-9750GII offers a lot of machine for the money. It can handle the needs of most students all the way through ...

  5. Light-time correction - Wikipedia

    en.wikipedia.org/wiki/Light-time_correction

    Light-time correction is a displacement in the apparent position of a celestial object from its true position (or geometric position) caused by the object's motion during the time it takes its light to reach an observer. Light-time correction occurs in principle during the observation of any moving object, because the speed of light is finite ...

  6. List of relativistic equations - Wikipedia

    en.wikipedia.org/wiki/List_of_relativistic_equations

    Inside, a light is shone upwards to a mirror on the ceiling, where the light reflects back down. If the height of the mirror is h, and the speed of light c, then the time it takes for the light to go up and come back down is: = However, to the observer on the ground, the situation is very different.

  7. Lunar Laser Ranging experiments - Wikipedia

    en.wikipedia.org/wiki/Lunar_Laser_Ranging...

    The reflected light is too weak to see with the human eye. Out of a pulse of 3×10 17 photons [25] aimed at the reflector, only about 1–5 are received back on Earth, even under good conditions. [26] They can be identified as originating from the laser because the laser is highly monochromatic.

  8. Download, install, or uninstall AOL Desktop Gold

    help.aol.com/articles/aol-desktop-downloading...

    Learn how to download and install or uninstall the Desktop Gold software and if your computer meets the system requirements. ... You'll need at least 512 MB of free ...

  9. Fizeau's measurement of the speed of light in air - Wikipedia

    en.wikipedia.org/wiki/Fizeau's_measurement_of_the...

    At 3 times the speed it was again eclipsed. [3] [4] Given the rotational speed of the wheel and the distance between the wheel and the mirror, Fizeau was able to calculate a value of 2 × 8633m × 720 × 25.2/s = 313,274,304 m/s for the speed of light. Fizeau's value for the speed of light was 4.5% too high. [5] The correct value is 299,792,458 ...