n. A diploid cell from which an egg or ovum develops by meiosis. A primary oocyte divides to produce a polar body and a secondary oocyte, which divides again to produce the ovum and another polar body.(ËÉÊÉËsaÉªt). diploid cell from which an egg or ovum develops by meiosis. A primary oocyte divides to produce a polar body and a secondary oocyte, which divides again to produce the ovum and another polar body. (ËÉÊÉËsaÉªt).
NicÃ©phore NiÃ©pce. NicÃ©phore NiÃ©pce (born Joseph NiÃ©pce; 7 March 1765 â 5 July 1833) was a French inventor, now usually credited as the inventor of photography and a pioneer in that field. NiÃ©pce developed heliography, a technique he used to create the world's oldest surviving product of a photographic process: a print made from a photoengraved printing plate in 1825.
It is not clear who invented the first, but several companies made color cameras. The earliest seems to be the 1899 Ives Kromskop Triple Camera by F.E. Ives of Philadelphia, wâ¦ho also made a direct color viewer for the plates. Another early 20th century example was the German Jos-Pe in 1925.