Why Learn Physics?
Physics isn't a subject you memorize and forget. It's a way of noticing the world does something surprising — and finding out you can actually explain why.
Your phone is secretly doing Einstein's physics right now.
Without correcting for relativity, GPS satellites would drift by kilometres a day. Every time your map app finds you, it's quietly running the same equations Einstein wrote out in 1915.
Why do figure skaters spin faster when they pull their arms in?
Free speed, no extra effort — just physics. It's the exact same principle that makes a neutron star spin hundreds of times per second as it collapses. Same rule, wildly different scale.
You can calculate exactly how far away a storm is. Right now.
Light gets to you almost instantly. Sound takes its time. Count the seconds between the flash and the boom, divide by three — that's the distance in kilometres. No app required.
Why does AC cool you down... but an open fridge just makes you sweat more?
They both work by moving heat with a compressor — the difference is where that heat ends up. An air conditioner pumps heat straight outside your room, gone for good. A fridge can only dump heat into the coils on its own back — and if the door's open, that heat has nowhere to go but right back into the same room you're standing in.