A lighthouse is a tower, building, or other type of physical structure designed to emit light from a system of lamps and lenses and to serve as a beacon for navigational aid, for maritime pilots at sea or on inland waterways.Lighthouses mark dangerous coastlines, hazardous shoals, reefs, rocks, and safe entries to harbors they also assist in aerial navigation. Once widely used, the number of operational lighthouses has declined due to the expense of maintenance and has become uneconomical since the advent of much cheaper, more sophisticated and effective electronic navigational systems.
圖片編號:
283984102
拍攝者:
Elrondperedhil
點數下載
授權類型 | 尺寸 | 像素 | 格式 | 點數 | |
---|---|---|---|---|---|
標準授權 | XS | 320 x 480 | JPG | 13 | |
標準授權 | S | 533 x 800 | JPG | 15 | |
標準授權 | M | 1414 x 2121 | JPG | 18 | |
標準授權 | L | 1825 x 2738 | JPG | 20 | |
標準授權 | XL | 2309 x 3464 | JPG | 22 | |
標準授權 | MAX | 2912 x 4368 | JPG | 23 | |
標準授權 | TIFF | 4118 x 6177 | TIF | 39 | |
進階授權 | WEL | 2912 x 4368 | JPG | 88 | |
進階授權 | PEL | 2912 x 4368 | JPG | 88 | |
進階授權 | UEL | 2912 x 4368 | JPG | 88 |
XS
S
M
L
XL
MAX
TIFF
WEL
PEL
UEL
標準授權 | 320 x 480 px | JPG | 13 點 |
標準授權 | 533 x 800 px | JPG | 15 點 |
標準授權 | 1414 x 2121 px | JPG | 18 點 |
標準授權 | 1825 x 2738 px | JPG | 20 點 |
標準授權 | 2309 x 3464 px | JPG | 22 點 |
標準授權 | 2912 x 4368 px | JPG | 23 點 |
標準授權 | 4118 x 6177 px | TIF | 39 點 |
進階授權 | 2912 x 4368 px | JPG | 88 點 |
進階授權 | 2912 x 4368 px | JPG | 88 點 |
進階授權 | 2912 x 4368 px | JPG | 88 點 |