Abstract: This is a peculiar, but unique research paper in Physics and Philosophy without including a single mathematical equation. Some of the material in the paper is from another paper titled, “An Arm-Chair Philosophy from a Physicist” published by the same author. The paper begins with the meaning of terms used in the title. The meaning of Philosophy and its history are given extensively so also the meaning of Physics and its history. The author has highlighted the meanings of Natural Philosophy and Renaissance Philosophy. Actual mini photographs of nearly 120 philosopher scientists with their scientific work in brief are given. Tables are made for each category of Natural Philosophers, Renaissance Philosophers and Philosopher Physicists and a combined graph is plotted the Period versus the number of scientists in each category. The author has included some Philosophy in the Conclusion. The reader should not miss the Epilogue which is interesting. The entire paper is almost an independent treatment by author from the past work of some researchers. As very few authors have attempted such a work in the past, the main reference for this paper is the Google Search and Wikipedia.

Key Words: History of Philosophy, History of Physics, Natural Philosophy, Physics, Pictures of over hundred Philosopher scientists, Renaissance, Renaissance Philosophy.

| DOI: 10.17148/IARJSET.2020.7811