Part one of term paper
Helium was discovered by a French astronomer named Pierre-Julius-Cesar Janssen. The French astronomer got evidence for the element during solar eclipse in 1868. He detected new lines in the solar spectrum. Later in 1895 Sir William Ramsay discovered it in clevite, a uranium mineral. Although it was discovered by Sir William Ramsay, the ...

Part two of term paper
... is hazards to using helium that most people are not aware of. The public needs to be aware and understand it is not for inhaling. Some teenagers think inhaling helium at parties is fun. But what they don't know it is also fatel. An aspect of inhaling is a person may lose consciousness due to asphyxia (oxygen deprivation). During the exchange of gases in the normal breathing process, the blood stream absorbs oxygen from air in the lungs, while carbon dioxide passes from the blood to ...