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Early wet-plate collodion portrait of a lady. Collodion glass plate negative: This process was invented by the Englishman Frederick Scott Archer in 1851. While the first process to take advantage of glass plates was the albumen print method, it was quite laborious and was quickly surpassed by the collodion glass plate negative in common use. [3]
PLA can degrade into innocuous lactic acid, making it suitable for use as medical implants in the form of anchors, screws, plates, pins, rods, and mesh. [45] Depending on the type used, it breaks down inside the body within 6 months to 2 years.
A builder's plate is usually a metal plate that is attached to railway locomotives and rolling stock, bogies, construction equipment, trucks, automobiles, ...
Glass plates were far superior to film for research-quality imaging because they were stable and less likely to bend or distort, especially in large-format frames for wide-field imaging. Early plates used the wet collodion process. The wet plate process was replaced late in the 19th century by gelatin dry plates.
FDM w/ PLA Pilotgeek Steel barrel liner, breechblock, firing pin, spring .22 LR: Uses a plastic frame, slide, and fire control components with a steel barrel liner, breechblock, firing pin, and spring. First in line of "PG22" single shot pistols and revolvers. Individually designed, rather than built off of open-source plans. EMG-01A [30]
Laminar flow cabinets exist in both horizontal and vertical configurations, and there are many different types of cabinets with a variety of airflow patterns and acceptable uses. Cabinets may have a UV-C germicidal lamp to sterilize the interior and contents before use to prevent contamination of the experiment. Germicidal lamps are usually ...
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Improvised armour added to a truck by railway shop workers for the Danish resistance movement near the end of World War II. Improvised vehicle armour is a form of vehicle armour consisting of protective materials added to a vehicle such as a car, truck, or tank in an irregular and extemporized fashion using available materials.