Lens and mounting of a large-format camera. Photography is the science, art, application and practice of creating durable images by recording light or other electromagnetic radiation, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film.
Fitflops&trade; are a type of flip-flop shoe developed in England in the mid to late 2000s. They began to immediately grow in popularity in England due to certain claims regarding their use.
HSPF â. HSPF stands for Heating Seasonal Performance Factor and is primarily used to measure the heating efficiency of heat pumps and ductless heat pumps, although it is also used (somewhat confusingly) to describe the overall heating and cooling capabilities of a system.SPF, SEER, and AFUE â Demystifying Efficiency Ratings. The world of heating and cooling certainly has its fair share of tricky technical language, which can make it difficult for consumers to make an informed decision when buying new equipment.