Recently, a researcher in MD Hall purchased two inexpensive “pointing lasers” over the Internet to use in an experiment. Fortunately, before starting work with the lasers, the researcher consulted with the Laser Safety Advocate—who determined that the lasers were actually dangerous 1-watt infrared Class 4 lasers, and a serious threat to anyone in the room if they were used without controls. With a little 3-D printer magic, the LSA re-engineered the experimental apparatus so that the system was a safer Class 1, not even needing protective laser goggles. Read about the case in Class 4 pointing lasers.
Month: December 2015
Communicate precisely and accurately with labmates and collaborators
In the lab, we often collaborate with others in the lab or with outside researchers. It is essential that lab protocols be communicated consistently and in language everyone understands. Learn about a close call that occurred when a JHU researcher misunderstood an outside collaborator’s protocol in CCall miscommunication MD.
Is your “laser pointer” safe?
Many people don’t know that handheld lasers sold as “laser pointers” may be grossly overpowered and very dangerous both to the user and to the audience. Learn about laser pointer hazards and why Homewood allows only Class 2 laser pointers in Using laser pointers.