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.
The geocentric model, also known as the Ptolemaic system, is a theory that was developed by philosophers in Ancient Greece and was named after the philosopher Claudius Ptolemy who lived circa 90 to 168 A.D. It was developed to explain how the planets, the Sun, and even the stars orbit around the Earth.opernicus proposed a heliocentric model of the solar system â a model where everything orbited around the Sun. Today, with advancements in science and technology, the geocentric model seems preposterous.