deposition spraying
31Printed circuit board — Part of a 1983 Sinclair ZX Spectrum computer board; a populated PCB, showing the conductive traces, vias (the through hole paths to the other surface), and some mounted electrical components A printed circuit board, or PCB, is used to… …
32Dust — For other uses, see Dust (disambiguation). A dust storm blankets Texas homes, in 1935. Dust consists of particles in the atmosphere that arise from various sources such as soil dust lifted up by wind (an Aeolian process), volcanic eruptions, and… …
33Forging — This article is about the metalworking process. For specific hot forging hearth, see forge. For the act of counterfeiting, see forgery. Hot metal ingot being loaded into a hammer forge Forging is a manufacturing process involving the shaping of… …
34Water pollution — Raw sewage and industrial waste flows across international borders New River passes from Mexicali to Calexico, California. Water pollution is the contamination of water bodies (e.g. lakes, rivers, oceans and groundwater). Water p …
35Nebulizer — In medicine, a nebulizer[1] (spelled nebuliser in British English)[2] is a device used to administer medication in the form of a mist inhaled into the lungs. A Jet nebulizer attached to a compressor. Nebuli …
36Sol-gel — The sol gel process is a wet chemical technique (Chemical Solution Deposition) for the fabrication of materials (typically a metal oxide) starting either from a chemical solution ( sol short for solution) or colloidal particles ( sol for… …
37Spin coating — is a procedure used to apply uniform thin films to flat substrates. In short, an excess amount of a solution is placed on the substrate, which is then rotated at high speed in order to spread the fluid by centrifugal force. A machine used for… …
38Amorphous ice — is an amorphous solid form of water, meaning it consists of water molecules that are randomly arranged like the atoms of common glass. Everyday ice is a polycrystalline material. Amorphous ice is distinguished by its lack of long range order.… …
39Nonpoint source pollution — Muddy river polluted by sediment. Photo courtesy of United States Geological Survey. Nonpoint source (NPS) pollution refers to both water and air pollution from diffuse sources. Nonpoint source water pollution affects a water body from sources… …
40Ruthenium(IV) oxide — Chembox new ImageFile = Rutile unit cell 3D balls.png ImageSize = 200px Name = Ruthenium(IV) oxide IUPACName = Ruthenium(IV) oxide Section2 = Chembox Properties Formula = RuO2 MolarMass = 133.07 g/mol (anhydrous) Appearance = Black crystalline… …
