Eli5: what exactly is the electromagnetic field?
In: Physics
One way to understand electromagnetic field is to consider it as the influence on electric charge.
We know that an electric charge exerts force on another electric charge, such as opposite charges attract. We then create the concept of electric field to describe this influence.
We also know that a magnet can exert force on electric charge that is moving, like how the earth’s magnet protects us against charges from the sun. We call this influence from the magnet magnetic field.
Further, we also observe that electric field and magnetic field are deeply connected. Like how light is made of the wave of both fields. So, we combine them together into electromagnetic fields.
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