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.
NFL teams have until 4 p.m. ET Monday to inform the league of their decision to franchise a player. As the clock ticks down, For The Win looks at why the franchise tag has become a dreaded title among players. The franchise tag is given to a player who will otherwise become an unrestricted free agent. Players who are franchised are not able to enter free agency and are required to stay with their current team for one season.