Abstract: A transparency includes an additive such that the transparency blocks greater than 50% of light of a wavelength range of 400 nm to 430 nm as measured by ultraviolet-visible spectroscopy from passing through the transparency and the transparency has a total visible light transmittance of greater than 65% as measured by way of ASTM D1003-07. A transparency includes an additive such that the transparency blocks greater than 70% of the light of the wavelength range of 400 nm to 430 nm as measured by ultraviolet-visible spectroscopy from passing through the transparency and the transparency has a total visible light transmittance of greater than 60% as measured by way of ASTM D1003-07.

Abstract: A kit for a batting tee includes a ball holder including a first prong and a second prong, the first prong at a first distal end of the ball holder and including a first recess, the second prong at the first distal end of the ball holder and including a second recess. The ball holder further includes a holder connector disposed at a second distal end of the ball holder, the second distal end of the ball holder opposing the first distal end of the ball holder, the first prong and the second prong extending from the holder connector in a planar fashion with each other. The kit includes a shaft including a first distal end to be attached to the holder connector, and a base including a top surface, the top surface including a mount to which a second distal end of the shaft is to be mounted.

Abstract: A kit for a batting tee includes a ball holder including a first prong and a second prong, the first prong at a first distal end of the ball holder and including a first recess, the second prong at the first distal end of the ball holder and including a second recess. The ball holder further includes a holder connector disposed at a second distal end of the ball holder, the second distal end of the ball holder opposing the first distal end of the ball holder, the first prong and the second prong extending from the holder connector in a planar fashion with each other. The kit includes a shaft including a first distal end to be attached to the holder connector, and a base including a top surface, the top surface including a mount to which a second distal end of the shaft is to be mounted.

Abstract: A transparency includes an additive such that the transparency blocks greater than 50% of light of a wavelength range of 400 nm to 430 nm as measured by ultraviolet-visible spectroscopy from passing through the transparency and the transparency has a total visible light transmittance of greater than 65% as measured by way of ASTM D1003-07. A transparency includes an additive such that the transparency blocks greater than 70% of the light of the wavelength range of 400 nm to 430 nm as measured by ultraviolet-visible spectroscopy from passing through the transparency and the transparency has a total visible light transmittance of greater than 60% as measured by way of ASTM D1003-07.

Abstract: A kit for a batting tee includes a ball holder including a first prong and a second prong, the first prong at a first distal end of the ball holder and including a first recess, the second prong at the first distal end of the ball holder and including a second recess. The ball holder further includes a holder connector disposed at a second distal end of the ball holder, the second distal end of the ball holder opposing the first distal end of the ball holder, the first prong and the second prong extending from the holder connector in a planar fashion with each other. The kit includes a shaft including a first distal end to be attached to the holder connector, and a base including a top surface, the top surface including a mount to which a second distal end of the shaft is to be mounted.

Abstract: A method and system for method for removing solid accretions from a copper anode or holding furnace using coherent jet lance assembly directed towards the solid accretions in the bottom portion of the copper anode furnace to melt the solid accretions over an extended period of time without damage to the furnace refractory proximate a point of stream impingement.

Abstract: A method and system for method for removing solid accretions from a copper anode or holding furnace using coherent jet lance assembly directed towards the solid accretions in the bottom portion of the copper anode furnace to melt the solid accretions over an extended period of time without damage to the furnace refractory proximate a point of stream impingement.

Abstract: An extendable and retractable golf club holding rack, which is designed to be mounted in a stationary position in the ground. In the retracted position, a holding rack is set within an outer wall of an outer housing. A latching mechanism maintains the holding rack inside the outer housing. Upon release of the latching mechanism, the holding rack extends via a spring mechanism above the outer housing and above ground level. The top portion of the holding rack has elongated slotted openings for receiving golf clubs. After use, the holding rack is pushed in a downward motion, which allows the latching mechanism to re-engage, maintaining the holding rack in the retracted position within the outer housing.