An observable is like a magic box that scientists use to study things that they cannot see directly. Imagine you have a treasure box filled with toys, candy, and other things. You can see and touch the items in the box because they are observable. Now, imagine that you have a mystery box, and you can only guess what's inside it. This is where the observable comes in. Scientists use observables to make predictions about what they might find in a mystery box.
An observable is a measurement or attribute that can be detected or measured indirectly using scientific instruments or tools. For example, you cannot see atoms or subatomic particles, but scientists can predict what they are like by observing how they interact with each other, creating observable patterns.
Observables are important in many areas of science, including physics, chemistry, and biology. They allow scientists to make predictions and test their theories, ultimately advancing our understanding of the natural world.