Lasers can cause damage in biological tissues, both to the eye and to the skin, due to several mechanisms. Thermal damage, or burn, occurs when tissues are heated to the point where denaturation of proteins occurs. Another mechanism is photochemical damage, where light triggers chemical reactions in tissue.
March 9: Teams are allowed to begin negotiating with other teamsâ players who are set to become unrestricted free agents at the end of the league year. This is the first time the NFL is providing a window to negotiate with other teamsâ free agents prior to the start of free agency.
Teams can offer non-exclusive tagged players a long-term contract, and the team using the tag then has the opportunity to either match that offer or receive two first-round draft picks in compensation. The amount of money tagged players receive has changed since the NFL and NFLPA signed the new CBA.