Andre Koch Torres Assis is a professor of Physics at the University of Campinas in Brazil, who has been studying the history of electricity and electrodynamics for more than thirty years. As part of his research, he has assembled put together a collection of experiments that demonstrate some of the earliest experiences that natural philosophers had with electricity - and which show how poorly understood these phenomena still are today, more than two hundred years after they were first observed.
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ANDRE'S EARLIER APPEARANCES ON THE PODCAST:
DemystifySci #328 https://www.youtube.com/watch?v=upV3ZfCEISA
DemystifySci #233 https://youtu.be/kGHNKORQZK8
DemystifySci #204 https://youtu.be/VGql2qiRjkY
ANDRE'S TALK at DEMYSTICON: https://youtu.be/bboKmG0uUuU?si=c1ctpVpecjzIRhMK
ANDRE'S HOMEPAGE: https://www.ifi.unicamp.br/~assis
00:00 Go!
00:07:02 Experiment Demonstration: The Amber Effect
00:17:06 The oldest instrument to study electricity
00:24:00 Exploring Repulsion in Electricity with the Electric Pendulum
00:30:00 Understanding Electrical Charge Interaction
00:34:00 Historical Experiments and Discoveries in Electricity
00:39:00 Levitation Experiment and Its Significance
00:45:00 Du Fay’s Two Kinds of Electricity Discovery
00:52:00 The Electroscope and Key Findings
01:02:04 Introduction to Insulators and Conductors
01:07:01 Discovery of Conductors and Insulators by Gray
01:14:24 Classification Experiment with Various Materials
01:21:22 Conductivity Results of Various Materials
01:26:58 Understanding Electricity Control Through Conductors and Insulators
01:30:48 Material Variability and Conductivity Insights
01:31:17 Conductive Properties of Materials
01:36:00 Voltage Behavior of Materials
01:41:00 Role of Water and Conductivity
01:49:00 Mysteries of Charge Generation
01:51:22 English Translation of Coulomb’s Memoirs
01:57:00 Experimental Insights into Electricity
01:57:48 Exploration of Electron Dynamics
02:04:08 Insights into Electrification Theories
02:10:53 Reflections on Physics Definitions
02:15:54 Material Experimentations and Historical Context
02:18:34 Advancements in Charge Distribution Studies
02:21:47 Limitations of Experimental Accessibility
02:22:27 Importance of Hands-On Physics Education
02:28:01 Mysteries of Electricity
02:30:06 Collaborative Physics Discourse
02:34:34 Historical Context of Discoveries
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