aristarchus of samos discovered sun is center of solar system.
who discovered sun is center of solar system?
aristarchus of samos
ideas concerning the origin and fate of the world date from the earliest known writings; however, for almost all of that time, there was no attempt to link such theories to the existence of a "solar system", simply because it was not generally thought that the solar system, in the sense we now understand it, existed. the first step toward a theory of solar system formation and evolution was the general acceptance of heliocentrism, which placed the sun at the centre of the system and the earth in orbit around it. this concept had developed for millennia (aristarchus of samos had suggested it as early as 250 bc), but was not widely accepted until the end of the 17th century. the first recorded use of the term "solar system" dates from 1704.
formation and evolution of the solar system
patterson function





























the patterson function is used to solve the phase problem in x-ray crystallography. it was introduced in 1935 by arthur lindo patterson while he was a visiting researcher in the laboratory of bertram eugene warren at mit.





























the patterson function is defined as





























it is essentially the fourier transform of the intensities rather than the structure factors. the patterson function is also equivalent to the electron density convolved with its inverse:





























furthermore, a patterson map of "n" points will have peaks, excluding the central (origin) peak and any overlap.
patterson function