How does light 'know' the shortest path?
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YouTubeVeritasium
How does light 'know' the shortest path?
Light is the fastest thing in the universe. In order to be this fast it always needs to take the shortest path (as it's speed cannot change). So how does it always know what the shortest path is?
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彼女のプロポーズに、人生で一番大切な一曲を💍🎹 In 須賀神社 ※動画内での演奏については、須賀神社様から正式に許可をいただいて行っております。 #proposal #surpriseproposal #tokyoproposal #piano #yourname
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