dioptric apparatus वाक्य
उदाहरण वाक्य
मोबाइल
- Due to the harsh dioptric apparatus was made by Chance Brothers & Co in Great Britain.
- Later a dioptric apparatus was installed in the tower and came into operation on 29 September 1864.
- A 1909 listing describes it as a square wooden lightroom, carrying a fixed fourth order dioptric apparatus.
- The apparatus was a 4th Order fixed Chance Bros Dioptric apparatus, and Heath himself supervised its installation in September 1886.
- Oddly, A 1909 listing still describes the light as a square wooden lightroom, carrying a fixed sixth order dioptric apparatus.
- In 1969 it was upgraded with the replacement of the old dioptric apparatus ( produced by Chance Brothers ) and with a pedestal rotating beacon ( Pharos Marine PRB-21 sealed beam optic and drive pedestal ).
- Although Fresnel, who had also the satisfaction of being the first to put it into operation, perfected the dioptric apparatus independently, Brewster was active earlier in the field than Fresnel, describing the dioptric apparatus in 1812.
- Although Fresnel, who had also the satisfaction of being the first to put it into operation, perfected the dioptric apparatus independently, Brewster was active earlier in the field than Fresnel, describing the dioptric apparatus in 1812.
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