| Java: Java is a network-friendly programming language invented by Sun Microsystems. Java is often used to build large, complex systems that involve several different computers interacting across networks, for example transaction processing systems. Java is also becoming popular for creating programs that run in small electronic devicws, such as mobile telephones. A very common use of Java is to create programs that can be safely downloaded to your computer through the Internet and immediately run without fear of viruses or other harm to your computer or files. Using small Java programs (called "Applets"), Web pages can include functions such as animations,calculators, and other fancy tricks. |
| JavaScript: JavaScript is a programming language that is mostly used in web pages, usually to add features that make the web page more interactive. When JavaScript is included in an HTML file it relies upon the browser to interpret the JavaScript. When JavaScript is combined with Cascading Style Sheets(CSS), and later versions of HTML (4.0 and later) the result is often called DHTML. |
| JBIG: Joint Binary Image Group |
| JDK -- (Java Development Kit): A software development package from Sun Microsystems that implements the basic set of tools needed to write, test and debug Java applications and applets |
| JFET: Junction field-effect transistor |
| Jitter: The short-term variation of timed events |
| joule A measure of energy, work or quantity of heat. One joule is the work done when a force of one newton is displaced a distance of one meter in the direction of force.
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| Joule Effect: The conversion of mechanical, electrical or magnetic energy into heat |
| Joule: SI unit of energy (or work or heat) equal to one newton-meter.
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| JPEG (Joint Photographic Experts Group): Industry standard for compressing images. This format provides lossy compression (you lose sharpness from the original) by dividing the image into tiny pixel blocks, which are halved over and over until an adequate compression ratio is achieved.
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| JPEG -- (Joint Photographic Experts Grou JPEG is most commonly mentioned as a format for image files. JPEG format is preferred to the GIF format for photographic images as opposed to line art or simple logo art. JPEG files use "lossy" compression schemes - when the file is saved, some information is lost. |
| Judder: Temporal aliasing artifact of digital video processing. For example, displaying a 30 frames per second image on a 75 Hz PC monitor.
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| Junction: The point in a thermocouple where the two dissimilar metals are joined.
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