We started this book learning about simple electrical devices, such as lightning rods and lightbulbs. By the end of the book, your learned about technology changing the world today! From learning about A.C. insulation motors that give incredible speed to Tesla cars to the various, complex parts of a smartphone. To say the least, you now know the important ideas about electricity.
And, don’t forget about the important scientists that furthered the fields of electricity. Ben Franklin’s experiment helped us better understand electricity in nature. This observation helped Ben Franklin invent a device that we still use to save lives today. Later, Joseph Swan’s first lightbulb and Thomas Edison later perfected it, which allows us to have endless light in our homes. And, then Nikola Tesla and his discovery of Alternating Current that allows the fast and cheap electricity throughout the world. Today, companies like Tesla, Inc., are designing electric cars to create a new type of car that is just as fast as other cars without all the pollution.
So, the next time you power on a cell phone or turn on your electric oven to bake cookies, think about how far we have come from discovering electricity. Many people in the 1800’s would have never imagined that the world you live in would be so full of light and energy. You have learned the same things and performed many of the experiments that other people used to help us design this electrified world. You can continue this work and may even event Chapter 21 in this book! You now have the knowledge and problem-solving skills to continue this research