Fraunhofer distance

The Fraunhofer distance is like standing far away from a painting in a museum so you can see the whole picture clearly. Just like you can't see all the details of the painting up close, you also can't see all the details of light coming from an object if you're too close.

When light comes from a source, like a light bulb or the sun, it spreads out in all directions. But if you want to study the light specifically, for example, with a camera or a telescope, you need to be able to see the details clearly.

The Fraunhofer distance is the perfect distance to be from the source of light, where you can see all the details clearly. It's like finding the perfect spot to stand in the museum to see the painting without it being too close or too far away.

Scientists use this distance to study things like stars or galaxies, where they need to be far enough to see all the details but not too far that they can't see anything at all. By finding the Fraunhofer distance, they can capture the best possible images and learn more about the object they're studying.