11. In 1904, Professor Bristol invented the first practical pyrometer for measuring high temperatures. 12. It is a stand-alone infrared pyrometer design with advanced integrated processing capabilities. 13. Various forms of pyrometers have historically existed. 14. To get around these difficulties, the ratio or two-color pyrometer was developed. 15. An absorbing medium of known transmission is inserted between the pyrometer and this black-body. 16. He was frequently noted for inventing a pyrometer device, for which he received a patent. 17. The first disappearing filament pyrometer was built by L . Holborn and F . Kurlbaum in 1901. 18. Pyrometers may be fitted to experimental gas turbine engines to measure the surface temperature of turbine blades.19. He also published a piece on a pyrometer in the first edition of the magazine in 1774. 20. For that reason, incorrect selection of emissivity will give inaccurate results when using infrared cameras and pyrometers .
