Question

who ininvernted mass spectrometer​

Answer 1

Answer:

The introduction of focusing types of mass spectroscopes came in the years 1918–19 and was due to the British chemist and physicist Francis W. Aston and to the American physicist Arthur J. Dempster.

Answer 2

Explanation:

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..The introduction of focusing types of mass spectroscopes came in the years 1918–19 and was due to the British chemist and physicist Francis W. Aston and to the American physicist Arthur J. Dempster.