 Hello and welcome back to another episode of Physics Partner. Today we have an exciting experiment to share with you, the Cartesian Diver with an eyedropper. But before we dive into the experiment, let's take a look at the history and background of this intriguing concept. The Cartesian Diver, also known as Cartesian Devil, is a classic experiment that originates from the 17th century French philosopher and mathematician Rene Descartes. Descartes was intrigued by the concept of buoyancy and the behavior of objects in fluids. He designed the Cartesian diver as a way to explore these principles. Descartes theorized that a small object placed in a fluid-filled container would experience buoyancy based on changes in pressure. He believed that a diver would sink or float depending on the difference in the pressure between the air and water. Now let's move on the experiment itself. Here I have an eyedropper filled with water and air. The eyedropper will act as our diver and the water will act as our fluid. Watch closely as we demonstrate the fascinating behavior of the Cartesian diver. As I apply pressure, the air inside the eyedropper compresses causing it to become denser than the surrounding water. This increase in density allows the eyedropper to sink. Conversely, when I release the pressure, the air inside the eyedropper expands causing it to become less dense than the water. This decrease in density allows the eyedropper to float back to the surface. By understanding the concept of pressure, density and buoyancy, we can observe how these variables affect the motion of our Cartesian diver. This experiment serves as a fantastic introduction to these fundamental concepts of fluid mechanics. This simple yet captivating experiment showcases the power of observation and hands-on experimentation in our scientific journey. So I think it's enough for today. So thank you very much for listening and watching. I hope you enjoyed the video. I hope this video is useful for you. So take care of yourself and don't hesitate to write an email if you have any questions, queries, suggestions and even classes are required. Take care of yourself. Meanwhile, see you in the next video. Goodbye.