Focusing or dispersing light.
Physics. Physics happens.
When it is immersed into the liquid of refractive index greater than to that of the lens material.
defin power of a lens
You would use a convex lens.
physics
A simplified explanation is that the antenna does for radio waves what a lens does for light because of physics.
ocular lens
You would use a convex lens.
analatic lens is surveying practical
Today's microscopes use convex lenses.
There is not a specific cleanser that you need to use on your sony camera lens. You can use any that is made to clean camera lens' As long as they say that they are camera lens safe and that is what they were made for then you can use it!
Physics. basic physics.