If you would like this post read to you, please click the play icon on the player directly below:
Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.
Is an reflector and emitter?
Back in the old days, the interim builds were marked with a laser warning sticker. The first option was to go with it. The reasoning behind this wasn’t yet determined if a surface that reflects coherent light was similar enough to an emitter to require the safety warning.
I guess it did not in the end, it wasn’t qualified.
