- Helium (Wikipedia)
Helium (from Greek: ἥλιος, romanized: helios, lit. ‘sun’) is a chemical element; it has symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas and the first in the noble gas group in the periodic table. Its boiling point is the lowest among all the elements, and it does not have a melting point at standard pressures. It is the second-lightest and second most abundant element in the observable universe, after hydrogen. It is present at about 24% of the total elemental mass, which is more than 12 times the mass of all the heavier elements combined. Its abundance is similar to this in both the Sun and Jupiter, because of the very high nuclear binding energy (per nucleon) of helium-4, with respect to the next three elements after helium. This helium-4 binding energy also accounts for why it is a product of both nuclear fusion and radioactive decay. The most common isotope of helium in the universe is helium-4, the vast majority of which was formed during the Big Bang. Large amounts of new helium are created by nuclear fusion of hydrogen in stars.
- James Cameron (Wikipedia)
James Francis Cameron CC (born August 16, 1954) is a Canadian filmmaker. He is a major figure in the post-New Hollywood era. He often uses novel technologies with a classical filmmaking style. He first gained recognition for writing and directing The Terminator (1984) and found further success with Aliens (1986), The Abyss (1989), Terminator 2: Judgment Day (1991), True Lies (1994), as well as Avatar (2009) and its sequels. He directed, wrote, co-produced, and co-edited Titanic (1997), winning three Academy Awards for Best Picture, Best Director, and Best Film Editing. He is a recipient of various other industry accolades, and three of his films have been selected for preservation in the National Film Registry by the Library of Congress.
