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.
Pats decline Vince Wilfork's option. FOXBOROUGH, Mass. -- Veteran defensive tackle Vince Wilfork tweeted Thursday that the New England Patriots have informed him they will not pick up the option in his contract, thus making him a free agent when the new league year begins Tuesday. Morning guys ...