While data accumulated by such instruments are useful in refining his theories, Drachman said, they are not essential to continuing his work. The models describe the positrons' temperature, density and other properties. The theory and the experiments help us understand how the universe is put together. The modeling involves complex calculations and results in elaborate mathematical equations. The beauty of the equation makes you feel it must be right.
Nature sometimes follows the same aesthetics.
Before beginning his career at NASA, Drachman researched nuclear weapons effects for the Naval Research Laboratory and spent four years as a professor at Brandeis University. Asked about his 37 years with the space agency, Drachman praised the working conditions. I have a good network of people around the world. Drachman's visit was funded jointly by the American Institute of Physics' Visiting Scientists in Physics program and Fort Lewis College. Under the program, he lectures at colleges once or twice a year.