Science Video for Kids How Does Light Travel - 搜索视频

How Light Travels | PBS LearningMedia

How Light Travels | PBS LearningMedia

In this video segment adapted from Shedding Light on Science, light is described as made up of packets of energy called photons that move from the source of light in a stream at a very fast speed. The video uses two activities to demonstrate that light travels in straight lines. First, in a game of flashlight tag, light from a flashlight ...

pbslearningmedia.org2009年1月1日

Light Physics

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What are the physics of a light... - Georgetown University

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