MATH’S NOTES
Safety First
When working with such a setup, please be extremely careful to never look directly into the output beam of the laser or any direct reflection of it, regardless of the output power. The light beam can cause serious damage to the eye, especially for higher output lasers. If you must look at the beam do it from a surface that is not reflective such as an index card or something similar.
In past columns we have presented several approaches to communicating in