Physics and Our Universe: How It All Works Season 1 Episode 36 Electromagnetic Induction

In this episode of "Physics and Our Universe: How It All Works," we delve into the world of electromagnetic induction. Electromagnetic induction is the process by which an electric current is induced in a wire when it is moved through a magnetic field. This phenomenon was first discovered by the English physicist Michael Faraday in the early 19th century, and it has since become one of the fundamental concepts of electromagnetism.

In this episode, we explore the basics of electromagnetic induction and how it applies to our daily lives. We begin by discussing the relationship between magnetism and electricity, and how they are interrelated. We then examine Faraday's law of induction, which states that the rate of change of magnetic flux through a loop of wire will induce an electric current in the loop.

We then move on to practical applications of electromagnetic induction, starting with electric generators. An electric generator is a device that converts mechanical energy into electrical energy through the use of electromagnetic induction. We discuss the basic components of an electric generator, including the rotor, stator, and brushes, and how they work together to generate electricity.

We also discuss how electromagnetic induction is used in transformers. A transformer is a device that is used to change the voltage of an alternating current (AC) electrical supply. Transformers are used extensively in power distribution systems, as they allow electricity to be transmitted over long distances with minimal energy loss. We explain how transformers work, including the role of magnetic induction in stepping up or stepping down the voltage of an electrical supply.

Finally, we examine the concept of electromagnetic waves. Electromagnetic waves are a type of wave that consists of both electric and magnetic fields oscillating together. They are responsible for many phenomena in the natural world, including light and radio waves. We explain how electromagnetic waves are generated, and their properties, including their frequency and wavelength.

Throughout this episode, we use real-world examples to illustrate the concepts we are discussing. We look at examples of electric generators, transformers, and electromagnetic waves in use, and explain how they work in the context of electromagnetic induction.

Overall, this episode provides a comprehensive introduction to the topic of electromagnetic induction, and how it underlies many of the technological advances that have shaped our modern world. It is a must-watch for anyone interested in physics, engineering, or technology.