Archives July 2019

Have A Private Swimming Area in Your House Add Garden

black and white patio umbrella

Most early forms of motion pictures or film were black and white. Some color film processes, including hand coloring were experimented with, and in limited use, from the earliest days of motion pictures. The switch from most films being in black-and-white to most being in color was gradual, taking place from the 1930s to the 1960s. Even when most film studios had the capability to make color films, the technology’s popularity was limited, as using the Technicolor process was expensive and cumbersome. For many years, it was not possible for films in color to render realistic hues, thus its use was restricted to historical films, musicals, and cartoons until the 1950s, while many directors preferred to use black-and-white stock. For the years 1940–1966, a separate Academy Award for Best Art Direction was given for black-and-white movies along with one for color; similarly, from 1939–1966 (excepting 1957), a separate Academy Award for Best Cinematography was given for both black-and-white and color movies.


Mini Cast Iron Dog Grate Fireplace Fire Grate Fire Basket

cast iron fireplace grate

Cast iron’s properties are changed by adding various alloying elements, or alloyants. Next to carbon, silicon is the most important alloyant because it forces carbon out of solution. A low percentage of silicon allows carbon to remain in solution forming iron carbide and the production of white cast iron. A high percentage of silicon forces carbon out of solution forming graphite and the production of grey cast iron. Other alloying agents, manganese, chromium, molybdenum, titanium and vanadium counteracts silicon, promotes the retention of carbon, and the formation of those carbides. Nickel and copper increase strength, and machinability, but do not change the amount of graphite formed. The carbon in the form of graphite results in a softer iron, reduces shrinkage, lowers strength, and decreases density. Sulfur, largely a contaminant when present, forms iron sulfide, which prevents the formation of graphite and increases hardness. The problem with sulfur is that it makes molten cast iron viscous, which causes defects. To counter the effects of sulfur, manganese is added because the two form into manganese sulfide instead of iron sulfide. The manganese sulfide is lighter than the melt, so it tends to float out of the melt and into the slag. The amount of manganese required to neutralize sulfur is 1. 7 × sulfur content + 0. 3%. If more than this amount of manganese is added, then manganese carbide forms, which increases hardness and chilling, except in grey iron, where up to 1% of manganese increases strength and density.


May FlowersSale Black and White Stripe by LandofPillowsDotCom

black and white striped pillows

Most early forms of motion pictures or film were black and white. Some color film processes, including hand coloring were experimented with, and in limited use, from the earliest days of motion pictures. The switch from most films being in black-and-white to most being in color was gradual, taking place from the 1930s to the 1960s. Even when most film studios had the capability to make color films, the technology’s popularity was limited, as using the Technicolor process was expensive and cumbersome. For many years, it was not possible for films in color to render realistic hues, thus its use was restricted to historical films, musicals, and cartoons until the 1950s, while many directors preferred to use black-and-white stock. For the years 1940–1966, a separate Academy Award for Best Art Direction was given for black-and-white movies along with one for color; similarly, from 1939–1966 (excepting 1957), a separate Academy Award for Best Cinematography was given for both black-and-white and color movies.