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Full Description
Nowadays, electricity and magnetism are all around us and we use them for nearly everything. In fact, it's hard to find anything that works without them. But what actually is electricity? What has it got to do with magnets? What is magnetism? And the most fascinating thing of all, what has all this got to do with light? All these questions are answered in this introduction to the fabulous world of electromagnetism.
My First Book of Electromagnetism tells the story of humankind's growing understanding of the forces around us, from Thales of Miletus's first experiments with magnetic attraction in 600 BCE to Michael Faraday and James Clerk Maxwell unifying the fields of magnetism and electricity to develop the theory of electromagnetism. At various stages in this fascinating journey the reader can find out how to make their own experiments, including making their own electroscope to test for electric charge and how to construct a working motor from safety pins, wire, sticky tape, a magnet and a battery.
Bestselling My First Book of Science series by award-winning illustrator and author duo
Introduces children aged 8 and up to a complex area of science in a fun and entertaining way
Adults are likely to enjoy the content and find that it increases their understanding
Easy-to-follow, bite-size text - uses different colours to draw out key words and information, making them easier to absorb and remember
Contents
Introduction 5
Electrical Phenomena 6
What is electricity? 7
Electric charge 8
Particles and charge 10
Ionization 12
Charge is conserved! 14
Electroscopes 16
Homemade electroscope 17
Experiments with balloons 18
Electric force between two charges 19
Electric current 20
Voltage (or potential difference) 21
Batteries 22
Making a homemade battery 23
Magnetism 24
Magnets 25
The magnetic field of a magnet 26
The earth is a giant magnet 28
Electricity generates magnetism 30
Electromagnets 32
Electric motors 34
Making a homemade electric motor 35
Why are some materials magnetic? 36
Magnetism generates electricity 38
Producing electricity 40
The field 42
Electromagnetic waves 44
The electromagnetic spectrum 46
We are electromagnetism 47
