How does light 'know' the shortest path?

See color in a new way with the Samsung Micro RGB TV from @BestBuy #BestBuyPartner

Addressable COB LED Strip — Seamless Warm to Cool White Effects

🔧 Why Do Things Break Right After the Warranty? 😠 — ❓ Why could people build products that lasted for decades a century ago, yet today almost everything seems to fail just when you trust it most? What if that wasn't bad luck or

@Lensmart glasses go hardddd !! use code BELLAA for money off 🤭 #fypシ゚ #foryoupage

Pressed by CBS News’ @Ed O’Keefe on whether there is evidence vandals damaged the Lincoln Memorial Reflecting Pool, President Trump pointed to what he described as long cuts in the pool’s surface and claimed someone may have deliberately caused the recent algae outbreak. “I saw it, they cut it. They cut it very violently,” Trump said. “The same thing with the floor, they cut it. And then they lifted it, they pulled it, and that's what it is.” #news #trump #reflectingpool #washingtondc #lincolnme