Exploring the Power of Geometric Calculus: Differential Forms in Physics

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Geometric calculus, as explored by Dr. David Hestenes, integrates differential forms into physics, highlighting their common roots in Grassmann algebra despite differing historical paths. The paper emphasizes the importance of embedding differential forms within the broader framework of geometric calculus, particularly for applications in relativistic physics, known as Spacetime Calculus. Integral theorems and their relevance to physics, especially electrodynamics, are key topics discussed. While some engineers view differential forms as impractical, their popularity is increasing, with modern texts incorporating them into vector analysis. The discussion underscores the growing recognition of the synergy between geometric calculus and differential forms in advancing physical theories.
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I like the Geometric Algebra approach to incorporating differential forms into physics that is taken by Dr. David Hestenes and contained in his numerous works over the last few decades but see no mention of Geometric Calculus here. Are you familiar with it?

http://geocalc.clas.asu.edu/pdf/DIF_FORM.pdf
"DIFFERENTIAL FORMS IN GEOMETRIC CALCULUS by Dr. David Hestenes

Abstract: Geometric calculus and the calculus of differential forms have common origins in Grassmann algebra but different lines of historical development, so mathematicians have been slow to recognize that they belong together in a single mathematical system. This paper reviews the rationale for embedding differential forms in the more comprehensive system of Geometric Calculus. The most significant application of the system is to relativistic physics where it is referred to as Spacetime Calculus. The fundamental integral theorems are discussed along with applications to physics, especially electrodynamics."


I first encountered differential forms in the classic GRAVITATION by Misner, Thorne and Wheeler but I later found that electrical engineers I knew considered it to be a fancy theoretician's formalism impractical for everyday use.Yet, differential forms have become more and more popular it seems and some of the more modern introductory texts on vector analysis have a chapter on differential forms.
 
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Link to work cited in previous post is now fixed.
 
Here is a little puzzle from the book 100 Geometric Games by Pierre Berloquin. The side of a small square is one meter long and the side of a larger square one and a half meters long. One vertex of the large square is at the center of the small square. The side of the large square cuts two sides of the small square into one- third parts and two-thirds parts. What is the area where the squares overlap?

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