PHYSSCI - 2

• understanding perceptions of reality by relating it to a established concept without violating known principles


  objects desire to return to their initial places
• in ancient greece, the idea that heavy objects fall faster compared to light objects established


  platos "saving the appearances"
• formulation of hypotheses or math. models abt observed phenomena without physical explanation 


  celestial objects ate not moving around our diurnal and annual motions
• diurnal and annual motion


  reality
• truth


  circular motion of celestial bodies
• for plato, the perfect motion and shape is circular motion, but it is actually 


  retrograde motion
• truth: circular motion


  reality: irregular retrograde motion 
• truth: moving at constant rate


  reality: not moving at constant rate
• limitations on the models


  consequences
• model based on merely assumptions and not analytical observations


  consequences
• platos "saving the appearances" connects truth to reality by formulating hypotheses or math. models without physical explanations


  sum
• solving the problem on "aaving the appearances", a model of the universe in the center was created

  sum