Question

who discover helium??​

Answer 1

Answer:

Helium was discovered by four scientists

Explanation:

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Answer 2

Four Scientist - Sir William Ramsay, Sir Joseph Norman Lockyer, Pierre Janssen, and Per Teodor Cleve

Explanation:

• Helium was discovered by four scientists named as Sir William Ramsay, Sir Joseph Norman Lockyer, Pierre Janssen, and Per Teodor Cleve.
• All of them contributed in the discovery of helium in different years and at different places during their research.
• The first evidence of helium was obtained on August 18th, 1868 by French astronomer Pierre Janssen.
• On October 20th, 1868; English astronomer Norman Lockyer saw a yellow line in the solar spectrum that he attributed to an undiscovered element in the Sun (i.e. helium).
• Sir William Ramsay was first discoverer on Earth of Helium in 1895.
• Per Teodor Cleve discovered helium in the mineral cleveite in 1895.
• So basically, the first traces of helium were discovered by Pierre Janssen and Norman Lockyer in 1868 while during other studies Sir William Ramsay and Per Teodor Cleve discovered about helium in 1895.