Recently more and more technologies are used . Some old people can't be used to the new technologies . But to the young it's advanced .The straight laser pulses differ from standard lasers in that they cover a wide range of colour frequencies rather than a single colour. Each pulse then passes through a transparent "phase pattern" mask and a lens, which together divide the laser pulse into its constituent parts, rather like breaking a musical chord into its individual notes.
Posts
No comments:
Post a Comment