Light
Light propagates at 299,792,458 m/s, often approximated as 300,000 kilometres per second or 186,000 miles per second. The speed of light (or c) is the speed of all massless particles and associated fields in a vacuum, and it is the upper limit on the speed at which energy, matter, and information can travel.
Read more about this topic: Motion (physics)
Famous quotes containing the word light:
“Love brings to light the lofty and hidden characteristics of the lover—what is rare and exceptional in him: to that extent it can easily be deceptive with respect to what is normal in him.”
—Friedrich Nietzsche (1844–1900)
“I think continually of those who were truly great.
Who, from the womb, remembered the soul’s history
Through corridors of light where the hours are suns,
Endless and singing.”
—Stephen Spender (1909–1995)
“A light exists in spring
Not present on the year
At any other period.”
—Emily Dickinson (1830–1886)