lower coating
21Spray painting — is a painting technique where a device sprays a coating (paint, ink, varnish etc.) through the air onto a surface. The most common types employ compressed gas usually air compressed by an air compressor to atomize and direct the paint particles.… …
22building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …
23Solar cell — A solar cell made from a monocrystalline silicon wafer …
24Screw — This article is about the fastener. For other uses, see Screw (disambiguation). Screws come in a variety of shapes and sizes for different purposes. U.S. quarter coin (diameter 24 mm) shown for scale. A screw, or bolt, is a type of fastener… …
25Fluorescent lamp — A fluorescent lamp or fluorescent tube is a gas discharge lamp that uses electricity to excite mercury vapor. The excited mercury atoms produce short wave ultraviolet light that then causes a phosphor to fluoresce, producing visible light.Unlike… …
26Diamond-like carbon — A ta C thin film on silicon (15 mm diameter) exhibiting regions of 40 nm and 80 nm thickness …
27Blu-ray Disc — Blue ray redirects here. For the fish of the same name, see Neoraja caerulea. Blu ray Disc Media type …
28Chrome plating — This article is about a chromium electroplating technique. For other uses, see Chrome (disambiguation). Not to be confused with Chromate conversion coating. Decorative chrome plating on a motorcycle Chrome plating, often referred to simply as… …
29pharmaceutical industry — Producers of pharmaceuticals, substances used in the diagnosis, treatment, and prevention of disease and the modification of organic functions. The earliest records of medicinal plants and minerals are those of the ancient Chinese, Hindu, and… …
30photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …
