
Visualizing ProperTime along a worldline

Visualizing Spacetime Geometry (Spacetime Diagrams)
 (2016) A "Spacetime Trigonometry" approach to Relativity (Gordon Research Conference  Physics Research and Education, June 2016)
 (2015) Spacetime Trigonometry: a CayleyKlein geometry approach to Special and General Relativity (General Relativity and Gravitation: A Centennial Perspective  Penn State U., June 2015)
 (2014) Comparing Alternate Approaches to Spacetime Diagrams: The Loedel Diagram (with student T. Nelson) (AAPT 2014 Summer Meeting  Minneapolis MN, 2014)
 (2006) AAPT Topical Conference  Teaching General Relativity to Undergraduates (Syracuse, NY  July 2021, 2006)
 [SalgadoSpacetimeTrigonometry  SalgadoGRposter.pdf]
 (1999present) Spacetime Trigonometry  The Trilogy of the Surveyors
 (1997present) Spacetime Trigonometry  a unified presentation of Galilean and Special Relativity

Visualizing Tensors and Differential Forms
animated

Visualizing Spacetime Models and the Causal Structure (Light Cones)

