3) The laser
Ruby laser - Wikipedia
This Month in Physics History
ASU researchers demonstrate the world's first white lasers | ASU News
Light shows, ray guns and blades: the laser is 50 | New Scientist
First Laser Created - This Day in Tech History
LaserFest | Early History
Laser Inventor| The story of.....
How the first laser was made - YouTube
My first laser 1968 a ruby laser of 22 Joules 1 ms relaxed.mp4 - YouTube
File:World's first laser out of case.jpg - Wikipedia
Laser - Invention, Light Amplification, Coherent Beam | Britannica
A History of the Laser: 1960 - 2019 | Features | Jun 2019 | Photonics Spectra
Rami Arieli: "The Laser Adventure"
what are lasers yag/green and How its work and its Advantages
Laser Tag History - A Brief Overview
͑ a ͒ Theodore Maiman's first laser, removed from aluminum cylinder... | Download Scientific Diagram
LaserFest | The First Ruby Laser
How Lasers Work and Who Invented Them
HP 2680A: The First Laser Printer - Hewlett-Packard History
History of Lasers | Ento Key
DPMA | Laser
