How do you optical alignment?

i think optical instrument is the instrument to study biologies that not even Using a electricity ..Like microscope and Non-optical instrument is which instrument is using a electricity like electron...

Optics is the branch of science that deals with the behaviour of light. Any thing which comes under the purview of this is termed optical. for eample optical lens, optical microscope .........etc

Optical use a laser to read and write data .Optical disks have very large storage capacity but they are not fast as harddisk .There are major types of optical disk 1.CD-Rom 2 Worm 3.Eraser...

they both have lenses and one i think allows u to see farther that would be the optical one i think.

An optical laser is modulated and used as the transmitter in optical fiber communication.