Halogen compunds coating fluorescent lamps phosphoresce to produce light in response to electric discharges inside the lamp (see electric discharge lamp).
Pyridine can react with halogens,nitronium fluoroborate, sulfur trioxide, boranes and chromium trioxide to form some useful organic reagents which are introduced briefly in the paper.
As to metal halide torch with gallium iodide is special rise 403nm and 417nm wave crest, and the highest wave crest 417nm has conspicuousness and good effect to exposal Diazo material.
Much of the interest in perovskites comes because those which combine metal atoms with chlorine, bromine or iodine (members of a group of elements called halogens) are semiconductors.
The granite pyramid looked almost austere in the clean halogen light. Katherine ran her fingers over the engraved Masonic cipher, and Langdon sensed deep emotion churning within her.
姿势
手臂系统保持头部不断平行。
料，
而发光（参阅electric discharge lamp）。
发出像
原子与氯、溴或碘（
来几乎简朴。凯瑟琳用手指扫过刻有共济
密码
