| Undercarriage: |
The wheel and strut assembly that supports an aeroplane at rest on the ground and during take-off and landing. |
| Uniform: |
Stands for the letter U in the phonetic alphabet. |
| Upload: |
Sending a file from your computer to another device. |
| Upwind leg: |
A flight path parallel to the runway in the direction of landing. |
| Urban: |
Populated; Cityscapes. |
| URL: |
Uniform Resource Locator. The address of a Web site. |
| USB: |
Universal Serial Bus: a protocol for transferring data to and from digital devices. Many digital cameras and memory card readers connect to the USB port on a computer. USB card readers are typically faster than cameras or readers that connect to the seria |
| USB port: |
A high-speed port that lets you daisy-chain devices (connect one device to another). |
| UV filter: |
This is a filter used to reduce ultraviolet light exposure of the film. Ultraviolet light can cause an image to appear hazy.
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