IN 1896 Prof. E. C. Pickering discovered a series of lines in the spectrum of the star ζ Puppis which has been attributed to hydrogen in consequence of numerical relationship to the Balmer series ...
The content of hydrogen in a sample is determined by measuring its hydrogen content by weight. Be it before or after refining, the determination of this parameter is crucial in various oils because it ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results