Search results
Results From The WOW.Com Content Network
A phosphor is a substance that exhibits the phenomenon of luminescence; it emits light when exposed to some type of radiant energy.
A TEM image of a cluster of poliovirus.The polio virus is 30 nm in diameter. [1] Operating principle of a transmission electron microscope. Transmission electron microscopy (TEM) is a microscopy technique in which a beam of electrons is transmitted through a specimen to form an image.
The fabrics can then be sheared or embossed to resemble fur even more closely. The heat-sensitivity of modacrylic also allows wigs and hairpieces to be curled and heat styled without damage. [3] Modacrylics are also used in fleece, knit-pile fabric backings, and nonwoven fabrics.
The term phosphor had been used since the Middle Ages to describe minerals that glowed in the dark. One of the most famous, but not the first, was Bolognian phosphor. Around 1604, Vincenzo Casciarolo discovered a "lapis solaris" near Bologna, Italy. Once heated in an oxygen-rich furnace, it thereafter absorbed sunlight and glowed in the dark.
White phosphorus (left), red phosphorus (center left and center right), and violet phosphorus (right) White phosphorus and resulting allotropes Elemental phosphorus can exist in several allotropes, the most common of which are white and red solids.
Phosphate glasses can be advantageous over silica glasses for optical fibers with high concentration of doping rare earth ions. [4] [5]A mix of fluoride glass and phosphate glass is fluorophosphate glass.
phosphor bronze PL or P/L: parts list: A list, usually tabular and often on the drawing (if not accompanying the drawing on a separate sheet), listing the parts needed in an assembly, including subparts, standard parts, and hardware. There is no consistently enforced distinction between an L/M, a BoM, or a P/L. PLM
The lithium iron phosphate battery (LiFePO 4 battery) or LFP battery (lithium ferrophosphate) is a type of lithium-ion battery using lithium iron phosphate (LiFePO 4) as the cathode material, and a graphitic carbon electrode with a metallic backing as the anode.