What is Lidar and How Does It Work? In 1960, Theodore H. Maiman announced the build of a red coherent light pushed from a ruby crystal, which was the first laser. Nearly 30 years later in 1989, the first law enforcement speed measurement laser device was patented.
What are my Garrity Rights? A look into public Employees and Self-Incrimination. If my boss or supervisor asks me questions at work, do I have to answer them? What if I am a public or government employee?