Complex sentence: Given as the first number in a binocular description (i.e.7x35,8x50), magnification is the ratio of the focal length of the objective divided by the focal length of the eyepiece gives the magnifying power of binoculars (sometimes expressed as "diameters").
Split into simpler sentences: Given as the first number in a binocular description (e.g.7x35,8x50), magnification is the ratio of the focal length of the objective divided by the focal length of the eyepiece. This gives the magnifying power of binoculars (sometimes expressed as "diameters").