Imagine you're playing with a flashlight in a dark room. Light seems to go super fast, but how can we tell exactly how fast it moves? A long time ago, scientists used mirrors and clocks to measure the speed of light. They sent a flash of light from one mirror to another and timed how long it took. It's like watching a race and counting seconds, except the winner is light!
Examples
- A flash of light from your flashlight reaches the wall almost instantly, but scientists measure how long it takes to know its exact speed.
- Imagine a race between two runners, light is the fastest one!
- Light can travel around the Earth in about 1/3 of a second.
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See also
- What Causes the Northern Lights?
- How Does a Mirror Work Exactly?
- How Does Gravity Affect the Moon’s Orbit?
- What Causes a ‘Golden’ Sunset or Sunrise?
- How Does Gravity Affect Space Travel?
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Categories: Physics · light,speed of light,measurement