| Jet: |
Aircraft with jet engines |
| Jet engine: |
An engine that works by creating a high-velocity jet of air to propel the engine forward. |
| Jet Stream: |
Strong winds concentrated within a narrow band in the upper atmosphere. It normally refers to horizontal, high-altitude winds. The jet stream often moves surface features such as front and low pressure systems. |
| Joule: |
Unit used to quantify the light output of electronic flash. A joule is equal to one watt second of 40 lumen-seconds. The measure is used to compare flash units in terms of power output. |
| JPEG: |
The letters JPEG stand for Joint Photographic Experts Group that describes a digital image file format standard in which the size of the file is reduced by compression. A JPEG image file name carries the extension "jpg". JPEG compression tends to loose so |
| Juliette: |
Stands for the letter J in the phonetic alphabet. |
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