Hatchett sentence example

hatchett
  • Bergman (1784) Charles Hatchett (1798) and others also expressed views with regard to the constitution and origin of bitumens.
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  • Of these early writers, Hatchett is the most explicit, the various bituminous substances being by him classified and defined.
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  • These elements occur in the minerals columbite and tantalite, and their compounds became known in the early part of the 19th century by the labours of C. Hatchett, A.
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  • COLUMBIUM, or Niobium (symbol Cb or Nb, atomic weight 94), one of the metallic elements of the nitrogen group, first detected in 1801 by C. Hatchett in a specimen of columbite (niobite) from Massachusetts (Phil.
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  • - Hatchett found that the alloy of i i parts gold and i part of iron is easily rolled without annealing.
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  • In 1801 C. Hatchett detected a new element, which he named columbium, in a mineral from Massachusetts, and in 1802 A.
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