What do we mean by the diffraction limit of a telescope? What do we mean by the diffraction limit of a telescope? It is the maximum size to which any telescope can be built. It describes the farthest distance to which the telescope can see. It describes the maximum exposure time for images captured with the telescope. It is the best angular resolution the telescope could achieve with perfect optical quality and in the absence of atmospheric distortion.

It is the best angular resolution the telescope could achieve with perfect optical quality and in the absence of atmospheric distortion.

Explanation:

When looking through a telescope or microscope due to imperfections of the lenses or misalignment, two sources may appear. The angular space between these two sources can be found by calculating the wavelength of the light observed divided by the diameter of the telescope.

the diagram which shows forces as either balanced = same speed or unbalanced = accelerarting