A+E Networks. On this day in 1969, Americaâs first automatic teller machine (ATM) makes its public debut, dispensing cash to customers at Chemical Bank in Rockville Center, New York.
This modification of the energy levels of a hydrogen atom due to a combination of relativity and spin-orbit coupling is known as fine structure.
Hydrogen gas is made up of diatomic molecules designated as H 2. Where is hydrogen found on earth? The most common place to find hydrogen on earth is in water. Each water molecule (H 2 O) contains two hydrogen atoms. Hydrogen is also found in a wide range of compounds throughout the earth including hydrocarbons, acids, and hydroxides.