Like ripples in water, light vibrations radiate out from the source, bounce off objects, and travel into your eye.
But light waves are also bouncing in all other directions too, allowing the person next to you to see. Not only that, longer, invisible wavelengths from all radio, TV (and cell phone) channels are also passing in all directions through the same space. Physicist and explainer Richard Feynman explains it all with clarity and enthusiasm.
Direct link to YouTube video
Richard Feynman on Wikipedia
Thanks, Dave!
