Jean-Baptiste Soleil renamed to Duboscq Pellin in 1883, and puis Pellin in 1886. In 1852, the Soleil workshop was purchased by Louis Sautter, maker of Fresnel lesnes for lighthouses, who founded Sautter et Cie, later Sautter-Lemonnier et Cie, and eventually Sautter-Harlé. Jean-Baptiste Soleil </div>Jean-Baptiste François Soleil (1798–1878) was a French optician and engineer. In 1819, Soleil founded an eponymous company at 23 Passage Vivienne in Paris, specialised in making optics instruments for such notable researchers as Fresnel, Arago, Foucault and Babinet. In 1825 he moved business to 21, rue de l'Odéon . In 1843, he made a heliostat for Jean Thiébault Silbermann.
Sun Kosi Mahabharat Range and the Himalayas. Tamakosi, Likhu, Dudhkosi, Arun and Tamor are its left tributaries and Indravati is the right tributary. The average annual flow is 22 x 109 m3. The average sediment load is 54 x 106 m3. The Tamur and the Arun rivers join the Sun Kosi at Tribenighat to form the Saptkoshi, which flows through the Chatra Gorge across the Mahabharat Range on to the Gangetic plain. There are few more smaller tributaries of the Sun Kosi such as Rosi Khola, Junga Khola,and Sapsu Khola. In Nepali language, the word "sun" means gold and golden; and the