<P> Pierre Jules César Janssen ( 22 February 1824 -- 23 December 1907 ) , also known as Jules Janssen , was a French astronomer who , along with English scientist Joseph Norman Lockyer , is credited with discovering the gaseous nature of the solar chromosphere , and with some justification the element helium . </P>
<P> Pierre Jules César Janssen ( 22 February 1824 -- 23 December 1907 ) , also known as Jules Janssen , was a French astronomer who , along with English scientist Joseph Norman Lockyer , is credited with discovering the gaseous nature of the solar chromosphere , and with some justification the element helium . </P>
first nobel gas in solar eclipse in india
first nobel gas in solar eclipse in india
helium
helium