Recent content by Kazza

How do lasers work? Are there comercially bought materials to make a laser? What is the minimum wattage for a steel cutting laser? And does anyone know some cool experiments to do with lasers? Thanks in advance.

Wow, I didn't know there was such a thing. Thanks for opening my eyes. Cheers

Constant Light without a source? Is it possible to create a constant light using a laser pointer and two highly reflective parabolas. If the two parabolas open out to face each other, and then you shine the laser into one, would the laser reflect until it reaches the centre and then continualy...