I always wondered why 3D points in OpenGL, Direct3D and in general computer graphics were always represented as (x,y,z,w) (i.e. why do we use four dimensions to represent a 3D point, whatâs the w for?). This representation of coordinates with the extra dimension is know as homogeneous coordinates.
Hydraulic, Pneumatic & Industrial Products | Parker, BVA, Brakequip. Hose & Fittings, Etc. is a Parker hydraulic and pneumatic parts distributor in California and Nevada, providing customers with solutions to hydraulic and pneumatic challenges and quality Parker parts since 1978. Product Updates
Choosing the right hose. Welding hoses are specifically designed for particular gases and pressures. To prevent mix-ups, hoses are usually color coded: red for acetylene and other fuel gases, green for oxygen and black for inert gases and compressed air. Welding hoses consist of a tube and protective cover. Grade R for acetylene only. Tube and cover are not flame resistant and not oil resistant.