Difference between revisions of Diopters
Jump to navigation
Jump to search
| Line 110: | Line 110: | ||
==== Spherical Equivalent ==== | ==== Spherical Equivalent ==== | ||
{{See also|Astigmatism#Spherical equivalent}} | |||
By calculating the average value over all angles using an integral, the result<ref>it is only necessary to integrate one or two periods: https://www.wolframalpha.com/input/?i=average+of+%28sin+x%29%5E2+from+0+to+2+pi</ref> is | By calculating the average value over all angles using an integral, the result<ref>it is only necessary to integrate one or two periods: https://www.wolframalpha.com/input/?i=average+of+%28sin+x%29%5E2+from+0+to+2+pi</ref> is | ||