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A LITTLE SOMETHING WORTH KNOWING

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ScienceOne small ahaUnit or constant

In a vacuum, this speed is approximately 299,792 kilometres per second.

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Your new ahaSpeed of Light

Light travels more slowly in materials such as water and glass than in vacuum. Source: Speed of light ↗

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More from Measures & Constants

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  1. 18This irrational number equals a Euclidean circle's circumference divided by its diameter.RECALL
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    Pi expresses the ratio of a circle's circumference to its diameter and is irrational: its decimal expansion never ends or becomes periodic.

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  2. 19This unit measures the distance light travels in a year and is used for vast distances between stars.RECALL
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  3. 20This distance unit, based historically on the mean Earth–Sun distance, is used within the Solar System.RECALL
    Astronomical Unit

    The astronomical unit, the average Earth-Sun distance, serves as a convenient yardstick within the solar system.

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