heliograph उदाहरण वाक्य

उदाहरण वाक्य

1. A heliograph was installed in 1879 at Signal Hill, the small rise overlooking the main settlement in Thomson Bay.
2. A single circuit submarine communications cable was laid from Cottesloe in 1900, after which the heliograph service was discontinued.
3. Shortly thereafter, the heliograph system was abandoned along with a number of forts used in the Apache campaign ."
4. During daylight hours when the sun is visible, a heliograph mirror can be used to flash bright, intense sunlight.
5. During this campaign, Miles's special signals unit used the heliograph extensively, proving its worth in the field.
6. The primary types of visual signalling were Semaphore flags, lamps and flags, lamps and lights, and the heliograph.
7. The Baroness rides to a deserted country road, where she uses a heliograph to signal for Filibus's airship.
8. With Pawsey's help, ?30, 000 was raised from the Ford Foundation to build the Culgoora radio-heliograph.
9. In the Boer War, where both sides used heliographs, tubes were sometimes used to decrease the dispersion of the beam.
10. The distance that heliograph signals could be seen depended on the clarity of the sky and the size of the mirrors used.