Search results
Results from the WOW.Com Content Network
trans-1,3,3,3-Tetrafluoropropene (HFO-1234ze (E), R-1234ze (E)) is a hydrofluoroolefin. It was developed as a "fourth generation" refrigerant to replace fluids such as R-134a, as a blowing agent for foam and aerosol applications, and in air horns and gas dusters. [ 3] The use of R-134a is being phased out because of its high global warming ...
cis-1,3,3,3-Tetrafluoropropene (HFO-1234ze(Z), R-1234ze(Z)) is a hydrofluoroolefin which has been considered for use as a refrigerant in high-temperature heat pumps.
1,3,3,3-Tetrafluoropropene. Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). 1,3,3,3-Tetrafluoropropene is a hydrofluoroolefin which has two isomers: cis -1,3,3,3-tetrafluoropropene. trans -1,3,3,3-tetrafluoropropene, used as a refrigerant (R-1234ze (E).)
Tetrafluoropropene. Tetrafluoropropene, also called tetrafluoropropylene, has the following isomers: This is a gaseous phase effluent from the decomposition of Teflon when laser cutting it. [1]
Vertex distance. Vertex distance. Vertex distance is the distance between the back surface of a corrective lens, i.e. glasses (spectacles) or contact lenses, and the front of the cornea. Increasing or decreasing the vertex distance changes the optical properties of the system, by moving the focal point forward or backward, effectively changing ...
35 mm equivalent focal lengths are calculated by multiplying the actual focal length of the lens by the crop factor of the sensor. Typical crop factors are 1.26× – 1.29× for Canon (1.35× for Sigma "H") APS-H format, 1.5× for Nikon APS-C ("DX") format (also used by Sony, Pentax, Fuji, Samsung and others), 1.6× for Canon APS-C format, 2× for Micro Four Thirds format, 2.7× for 1-inch ...
Telecentric lens. Bi-telecentric lens with 208 mm diameter front element and a C-mount camera interface. A telecentric lens is a special optical lens (often an objective lens or a camera lens) that has its entrance or exit pupil, or both, at infinity. The size of images produced by a telecentric lens is insensitive to either the distance ...
The real question is, do hedgehogs make good pets or not? The short answer is, yes, they can - but there's a catch. Actually, there's several big catches, which is why we should break this ...