3. Specify settings, and then save the file. In the Save As dialog box, click Settings. Select Retain Flowing Text or Retain Page Layout, depending on your priority. You can select options to include comments, images, run OCR (optical character recognition), and specify the language setting for OCR.ave PDF files as Word documents You can save a PDF file as a Word document, even if the file was originally created in a different application.
Nicoluas Copernicus was the first astronomer to propose the heliocentric theory. The heliocentric theory was first proposed by the Greek astronomer and mathematician Aristarc â¦ hus of Samos, in the 3rd century, BCE. The first predictive heliocentric mathematical model of the motion of the planets was developed by Nicholas Copernicus. 12 people found this useful.
De revolutionibus orbium coelestium by Nicolaus Copernicus, published in 1543, was the first mathematically predictive heliocentric model of a planetary system. 17th-century successors Galileo Galilei, Johannes Kepler, and Isaac Newton developed an understanding of physics which led to the gradual acceptance of the idea that the Earth moves round the Sun and that the planets are governed by the same physical laws that governed the Earth.