NCSA: National Center for Supercomputing Applications. An arm of the University of Illinois, where Mosaic was originally developed.

Negative: In photography, film containing an image in which values of the original are reversed so that the dark areas appear light and vice versa. In lithography; a film containing type or halftones in which the values are reversed, whites are black and blacks are clear film.

Net-pointers: URLs, ftp addresses, or other locations on the Internet where you can go to get interesting information.

Network: A group of computers connected by cables and using software that allows them to share equipment (such as printers) and exchange information.

Network Disk Drive: A disk drive that is available for public use on a network.

Newsgroups: On USENET, individual topic areas are called newsgroups. Such groups exchange regular message traffic and are a great source of information for technical topics of all kinds.

Newton Rings: In reproduction from either photography or lithography, an objectionable series or irregularly colored circles caused by the prismatic action of interfacing different smooth surfaces together, such as in contact frames or transparencies on a scanner drum.

Noise: Unwanted electronic or optical signals that cause interference in the reproduction of data or an image.

Number Up: Quantity of images placed on a single flat. (i.e. - 24 postcards can be imaged on a single 26x40 flat. - 24 up)

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