Michael Faraday's Bakerian Lecture, "Experimental Relations of Gold (and Other Metals) to Light," explores the experimental evidence supporting the undulatory theory of light. Faraday discusses the properties of gold and other metals when exposed to light, heat, and pressure, and how these interactions affect their optical properties. He highlights the importance of gold-leaf experiments in understanding the behavior of light and the nature of electromagnetic waves. Faraday describes the effects of heating, pressure, and chemical reduction on the optical properties of gold and other metals, such as copper, tin, iron, lead, zinc, palladium, platinum, aluminum, and rhodium. He also examines the formation of films from these metals using phosphorus and hydrogen, and the changes in their reflectivity and transmitted light colors. Faraday's work provides valuable insights into the experimental validation of the undulatory theory of light and the behavior of metals in various states.Michael Faraday's Bakerian Lecture, "Experimental Relations of Gold (and Other Metals) to Light," explores the experimental evidence supporting the undulatory theory of light. Faraday discusses the properties of gold and other metals when exposed to light, heat, and pressure, and how these interactions affect their optical properties. He highlights the importance of gold-leaf experiments in understanding the behavior of light and the nature of electromagnetic waves. Faraday describes the effects of heating, pressure, and chemical reduction on the optical properties of gold and other metals, such as copper, tin, iron, lead, zinc, palladium, platinum, aluminum, and rhodium. He also examines the formation of films from these metals using phosphorus and hydrogen, and the changes in their reflectivity and transmitted light colors. Faraday's work provides valuable insights into the experimental validation of the undulatory theory of light and the behavior of metals in various states.