Pound per square inch

Okay kiddo, so you know how we measure things like length, weight and size with different units like inches or pounds? Well, pound per square inch is a unit we use to measure something called pressure.

Let's say you have a balloon and you blow it up, you're basically adding air inside the balloon. The more air you put in, the more pressure there is inside the balloon. Now, if you were to squeeze the balloon or poke it with something sharp, the pressure inside the balloon would make it pop.

So, when we talk about pound per square inch, we're basically measuring how much pressure is being applied to a certain area. In this case, we're measuring how many pounds of pressure there are in each square inch. It's like putting a heavy weight on something small versus putting it on something big. The weight is the same, but the pressure is different.

So, pound per square inch is a way to measure pressure, or how much force is being applied to a certain area. By using this unit, we can better understand how much pressure certain things can handle before they break or fail.