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.
Just as there are significant differences between undrafted free agents and tryout players, there are significant differences between undrafted free agents and drafted players. Undrafted free agents sign three-year contracts for the rookie minimum, which is $435,000. The minimum salary has built-in increases each year, so a player like former Rutgers linebacker Kevin Snyder, who signed with the Detroit Lions as an undrafted free agent, will sign a three-year, $1.575 million contract.