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...Spectrophotometry of Luhman 16B Reveals Large-amplitude Variations in the Alkali Lines|year=2021|last1=Heinze|first1=A. N.|last2=Metchev|first2=Stanimir|las Heinze ''et al.'' (2021) observed variability in spectral lines of [[alkali metal]]s such as [[potassium]] and [[sodium]]; they suggested that the variations ...

....<ref name="F165"/> He had been a pioneer in the use of [[Hiduminium|light metal alloys]] in aero engines and, in the Second World War, he had an important ...r the war, in 1945, he set up a company called Almin Ltd (Associated Light Metal Industries) which brought together a group of companies mostly concerned wi ...