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
- How Do Mirrors Reflect Images?
- How Did ‘Loudness’ Become a Measurable Quality in Sound?
- How Do Rainbows Form in the Sky?
- How Does a Mirror ‘Know’ What It’s Reflecting?
- How Does a ‘Laser’ Work and Why Is It So Powerful?
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