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.
NBA Free Agency: How does an offer sheet work? How does an offer sheet work in free agency? The wildest free agency period is set to begin in the NBA this week and teams are going to throw around money like they have never done before. With a $24 million increase in the salary cap, the NBA is about to have its landscape changed forever.