# Difference between revisions of "User:Pranav Rathi/Notebook/OT/2010/12/10/Olympus Water Immersion Specs"

< User:Pranav Rathi‎ | Notebook‎ | OT‎ | 2010‎ | 12‎ | 10
The resolution and the spotsize (beam waist) presented here is in the theoretical limits; we cannot achieve better than this. Resolution and spotsize are diffraction limited and to reach these limits our optics has to be perfect; no aberrations and other artifacts. Since our optics is not perfect and very clean we can hardly reach these limits in real life; definitely the resolution and spotsize in real is worse than the numbers presented here. A good way to do a quick estimation of the resolution (diameter of the airy disk) is that its 1/3 of a wavelength ${\displaystyle lambda=.50micron;lamda/3*n=145micron}$. Since we do all our experiments in water we will have take index of water in account (n=1.33). I am ignoring the NA of the condenser in the calculations.