Observed on Aug 18,1868. Labeled as a bright yellow line. Detected by French astronomer,Jules Janssen. Joseph Lockyer was the one who gave it its name,though.
Result of radioactive decay Most helium escapes into atmosphere It’s extracted through fractional distillation but natural gas It’s available in liquid or gaseous forms
Balloons are the most usage for helium Used as a productive gas for growing silicon and germanium crystals,titanium and zirconium production, and gas chromatography It’s used in shielding gas used in arc welding processes Used in helium to fly like a hot air balloon