WebApr 12, 2024 · The first one comes between the optical element that gathers light (the objective) and the lens system and is called the First Focal Plane (FFP). The second one … WebApr 5, 2024 · Instead, the Seasonal Coefficient of Performance (SCoP) or Seasonal Performance Factor (SPF) is used to show the efficiency of the heat pump across the …
FFP vs. SFP: Know the Difference - Bushnell
WebApr 9, 2014 · The Seasonal Performance Factor (SPF) is a measure of how energy efficient your heat pump is. Read a full explanation and download a calculation … WebSPF refers to the ability of a sunscreen to block ultraviolet B (UVB) rays, which cause sunburns, but not UVA rays, which are more closely linked to deeper skin damage. Both … teppich tibet
Coefficient of performance - Wikipedia
WebFFP is an acronym that stands for First Focal Plane, and SFP is an acronym that stands for Second Focal Plane. The “plane” refers to where the rifle … WebJun 9, 2024 · An SPF of 50 allows about 2 percent of those rays through. That may seem like a small difference until you realize that the SPF 30 is allowing 50 percent more UV radiation onto your skin. Under ideal … WebThe SPF on sunscreen stands for sun protection factor, a relative measurement for the amount of time the sunscreen will protect you from ultraviolet (UV) rays. UVB rays … triban 540 spec