SSC Junior Engineer Notification. SSC Junior Engineer 2015 Notification:-. Date of Notification:- 11-07-2015. Last Date of Receiving Application:- Part-I 07-08-2015 (upto 5:00 P.M.) Part-II 10-08-2015 (upto 5:00 P.M.). SSC Junior Engineer Exam 2015 Date:- 20-12-2015.
Incandescent Gas Lantern Mantles General The thorium-containing incandescent mantle was invented in 1884 by Carl Auer von Welsbach, an Austrian chemist, and it is sometimes referred to as a Welsbach mantle or Auerlicht.This invention resulted in the first commercial use of the element thorium.he thorium-containing incandescent mantle was invented in 1884 by Carl Auer von Welsbach, an Austrian chemist, and it is sometimes referred to as a Welsbach mantle or Auerlicht. This invention resulted in the first commercial use of the element thorium.
The first stove-oven was invented by Robert Yeaman in 1345. The earliest ovens were found in Central Europe, and dated to 29,000 BC.They were used as roasting and boiling pits located within yurt structures.he first stove-oven was invented by Robert Yeaman in 1345. The earliest ovens were found in Central Europe, and dated to 29,000 BC. They were used as roasting and boiling pits located within yurt structures.