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 bonds join the bases of complementary DNA strands. Three hydrogen bonds form between adenine and guanine, while two hydrogen bonds form between cytosine and thymine. Hydrogen bonds join the bases of complementary DNA strands. Three hydrogen bonds form between adenine and guanine, while two hydrogen bonds form between cytosine and thymine.