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How Does Light Travel?

How Does Light Travel?. Lesson 3. How does light travel?. How does light travel?. Speed of Light:. About 300,000 km/sec About 186,000 miles/sec Fastest known thing in the universe. Speed of light is the “c” in E=mc 2

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How Does Light Travel?

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  1. How Does Light Travel? Lesson 3

  2. How does light travel?

  3. How does light travel?

  4. Speed of Light: • About 300,000 km/sec • About 186,000 miles/sec • Fastest known thing in the universe. • Speed of light is the “c” in E=mc2 • A light year is the distance light can travel in one year. (A light year is about 5,500,000,000,000 miles.)

  5. Mirror on the Moon

  6. Big Ideas: • Light is invisible as it travels and we can only see light if it bounces off something (like fog or the wall). • Light travels in straight lines called rays. • Light travels very quickly (~300,000 km/sec).

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