Straws and atmospheric pressure

Drinks in a straw aren’t pulled, they’re pushed.

Drinks in a straw aren’t pulled, they’re pushed. When we say ‘straw,’ most people picture liquid being sucked upward. But scientifically, that’s not what happens. The liquid doesn’t rise because of suction; it rises because the … more

압력과 면적의 관계 Pressure and Pressing Area

Pressure and Pressing Area

Pressure is defined as the force applied per unit area. When the same force is applied to two different surfaces, the pressure depends on the size of the area: the larger the area, the smaller the … more