CHEM-1111 Chapter Notes - Chapter 1: George Gamow
Document Summary
-a hypotheses that survives many experimental tests of their validity may turn into a theory (a unifying principle that explains a body of facts and/or those laws that are based on them). Chemistry in action: primordial helium and the big bang theory. 1940s, george gamow developed the big bang theory. Since then science has been able to provide certain proof in favour of his theory. Measurements have been made that indicate that the universe is expanding, scientists have detected background radiation, and primordial helium has been found in the universe. Hydrogen and helium should have formed first (they are the two most simple elements) and diffused before many galaxies were formed. When ultraviolet light is analyzed from quasars, it is found that helium absorbs the light; if hydrogen ionizes is cannot absorb light, but helium can lose an electron and still have another while still absorbing light.
