It's a Gas

What do MRI machines, semiconductor manufacture, deep sea diving, welding, and party balloons have in common--helium.
Astronomers first discovered Helium by turning a new scientific instrument, the spectrometer, toward the sun. Chemists searched for helium on Earth. Finally, William Ramsey released helium by dropping acid on a uranium mineral. Later Helium was found in 1903 jetting from a Cowley county Kansas well.