RE: Laser Technology: Understand How your DVD/CD Players, Laser printers, Holography and Bar-code Scanners works

[tormiwah]

Yes you are right
That very very small is what makes laser a unique and powerful light
For the ordinary light source, the wavelength spread is 1 in 10^6(10^-6) and 1 in 10^16 (10^-16) according to engineering physics by Nadu