*https://physics.aps.org/articles/v12/88 <https://physics.aps.org/articles/v12/88>Focus: Light Seems to Pull Electrons Backward*
*Light hitting a metal surface at an angle sends the electrons moving in the direction opposite to the light, a result that puzzles theorists.* The interaction of light with electrons will produce polaritons. Polaritons have negative mass. The light gives electrons negative mass so they move in the negative direction from the force imparted on them by the light. But when the light interacts with air which is mostly nitrogen, polaritons are not formed and the light imposes a force in which the electrons move in the direction positive to the force imparted by the light. There is a lessen here to be learned by LENR engineering. Air is a LENR poison. Polaritons on a metal surface will not form when exposed to nitrogen. Freedom from surface contamination on a LENR active metal surface must be perfect for the LENR reaction to occur. Any poison on that surface will destroy the plasmonic reaction that brings forth polaritons.
