A lighthouse is a tower, building, or other type of 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:
250464004
拍攝者:
Trinhhuytho
點數下載
授權類型 | 尺寸 | 像素 | 格式 | 點數 | |
---|---|---|---|---|---|
標準授權 | XS | 480 x 320 | JPG | 13 | |
標準授權 | S | 800 x 533 | JPG | 15 | |
標準授權 | M | 2121 x 1414 | JPG | 18 | |
標準授權 | L | 2738 x 1825 | JPG | 20 | |
標準授權 | XL | 3464 x 2309 | JPG | 22 | |
標準授權 | MAX | 5862 x 3908 | JPG | 23 | |
標準授權 | TIFF | 8290 x 5527 | TIF | 39 | |
進階授權 | WEL | 5862 x 3908 | JPG | 88 | |
進階授權 | PEL | 5862 x 3908 | JPG | 88 | |
進階授權 | UEL | 5862 x 3908 | JPG | 88 |
XS
S
M
L
XL
MAX
TIFF
WEL
PEL
UEL
標準授權 | 480 x 320 px | JPG | 13 點 |
標準授權 | 800 x 533 px | JPG | 15 點 |
標準授權 | 2121 x 1414 px | JPG | 18 點 |
標準授權 | 2738 x 1825 px | JPG | 20 點 |
標準授權 | 3464 x 2309 px | JPG | 22 點 |
標準授權 | 5862 x 3908 px | JPG | 23 點 |
標準授權 | 8290 x 5527 px | TIF | 39 點 |
進階授權 | 5862 x 3908 px | JPG | 88 點 |
進階授權 | 5862 x 3908 px | JPG | 88 點 |
進階授權 | 5862 x 3908 px | JPG | 88 點 |