Here's a breakdown of the terms:

* Buoyant Force: The upward force exerted by a fluid (like water or air) on an object submerged in it.

* Weight of Fluid Displaced: The weight of the fluid that the object pushes out of the way when it's submerged.

So, the principle states: The buoyant force acting on an object submerged in a fluid is equal to the weight of the fluid displaced by that object.

Let me know if you'd like to explore some applications of this principle!