You will be using a laser. Although the power of the lasers used in the laboratory is small, all lasers are potentially dangerous. Never look directly into the beam. Never point a laser beam at another person. Always think about where the laser beams are going if they leave your immediate area; it is highly recommended to block them from leaving in the first place. Also, you must be aware of reflected laser beams, so be especially careful when placing lenses, prisms, mirrors, etc., in the laser beam. IMPORTANT: DO NOT LOWER YOUR HEAD TO THE LEVEL OF THE LASER TO ALIGN IT. Look down on the beam from above