Wi-Fi walks right through walls 🧱 — but light can't. Both are waves. So what's the difference? 👇

Wi-Fi walks right through walls 🧱 — but light can't. Both are waves. So what's the difference? 👇

Wi-Fi and light are both invisible waves of energy — like ripples spreading across a pond. But they are NOT the same size. Wi-Fi waves are about as long as your whole hand. Light waves are millions of times smaller — tinier than a single raindrop!

Here's where it gets fun. The tiny atoms inside a brick wall LOVE to catch light waves. The size is a perfect fit — like a key sliding right into a lock. The light gets grabbed, and it can't get through.

But Wi-Fi waves? They're way too big and slow for those little atoms to catch. So the wall just… ignores them. 📶 They slip right through, all the way to your tablet or TV!

📚 Sources:
• West Texas A&M University — Science Questions with Surprising Answers: https://www.wtamu.edu/~cbaird/sq/2015/10/02/can-radio-antennas-emit-visible-light/
• West Texas A&M University — Science Questions with Surprising Answers: https://www.wtamu.edu/~cbaird/sq/2015/10/02/can-radio-antennas-emit-visible-light/
• Skulls in the Stars (physics blog by Dr. Greg Gbur, UNC Charlotte): https://skullsinthestars.com/2023/07/22/how-fast-can-we-communicate-with-light-and-radio-waves/
• UCSB Science Line (University of California Santa Barbara): http://scienceline.ucsb.edu/getkey.php?key=5214
• The Brighter Side of News: https://www.thebrighterside.news/post/strange-physics-why-wi-fi-and-radio-waves-can-pass-through-walls-but-light-cant/
• Skulls in the Stars (physics blog by Dr. Greg Gbur, UNC Charlotte): https://skullsinthestars.com/2023/07/22/how-fast-can-we-communicate-with-light-and-radio-waves/

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