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.
The compensatory picks will be positioned within the third through sixth rounds based on the value of the compensatory free agents lost. Compensatory picks may not be traded this year. A rule change approved by clubs in 2015 will permit compensatory draft picks to be traded beginning in 2017. Compensatory free agents are determined by a formula based on salary, playing time and postseason honors. The formula was developed by the NFL Management Council.