In computing, a process is a running instance of a program, including all variables and other state. A multitasking operating system may just switch between processes to give the appearance of many processes executing concurrently or simultaneously, though in fact only one process can be executing at any one time per CPU thread.
Some new processors, such as Athlon 64 X2 can actually execute two processes at a time, because they are multicore processors.
Intel's Pentium 4 with Hyperthreading capability have a different design: some doubled parts of the core allow the processor to make a context switch in almost no time.
More on [ Process (computing) ]

Osterman - Wet-plate collodion artists and publishers of The Collodion Journal, quarterly. They give workshops through the George Eastman House as well as private tutorials.
Alternative Photography - An information site and gallery for people working with cyanotypes, or interested in alternative photography.
Meta Description: [ Historical photographic methods in use today - the art, the processes and the techniques of alternative photography. Techniques and processes, photographers’ gallery, articles and forums and specialist literature. ]
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Meta Description: [ An introduction to alternative photographic processes: Nonsilver, antique and unconventional ways to print photographic images ]
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Meta Description: [ How to make unique prints using alternative and historic processes (and some modern re-workings of them.) ]
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Meta Description: [ Gum Bichromate Photography ]
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Meta Description: [ Way back when I considered photography way expensive,
I figured out how to take pictures one blueprint paper with a polaroid
cameara. With a 4 hour exposure time, it wasn't exactly instant, but it was novel
and very cheap! ]
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