| http://www.w3.org/ns/prov#value | - I thought that any beam of light (even a collimated beam like a laser) would gradually widen as it travels from origin to destination.Not a stupid question at all (there are not really any stupid questions since you are smart enough to seek the answer to an unknown.)A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic ra
|
