Differences

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--- 184_notes:mag_interaction [2020/02/26 17:46] – dmcpadden
+++ 184_notes:mag_interaction [2021/03/18 16:13] – [New Interaction] bartonmo
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-[[184_notes:moving_q|Next Page: Moving Charges Make Magnetic Fields]]
+/*[[184_notes:moving_q|Next Page: Moving Charges Make Magnetic Fields]]
-[[184_notes:combinations|Previous Page: Larger Combinations of Circuit Elements]]
+[[184_notes:combinations|Previous Page: Larger Combinations of Circuit Elements]] */
 ===== Magnetic Interaction =====
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 {{youtube>JzJ_JefNxaM?large}}
 ==== New Interaction ====
-Rather than talking about the two types of charges (positive and negative), with magnets we talk about the two magnetic poles - north and south poles. //**Magnetic poles are not the same thing as electric charges**//, although they do interact in similar ways. (Again, this is because the magnetic interaction is related to the electric interaction as we will see later.) We observe that a north pole on a magnet will repel another north pole and a south pole will will repel other south pole - following the "likes repel" rule. Whereas, we observe that a north pole will attract a south pole of a magnet - following the "opposites attract" rule. However, //unlike with electric charges, a [[https://en.wikipedia.org/wiki/Magnetic_monopole|single magnetic pole]] (sometimes referred to as "monopole") does not appear to exist//. For example, as far as we know, it is impossible to have a single north pole magnet - instead a magnet always comes with both a north and south pole. Even if you cut a magnet in half, each half will then have a north and south pole. While we believe these monopoles do not exist, [[https://en.wikipedia.org/wiki/Magnetic_monopole#Grand_unified_theories_2|some theoretical descriptions of the universe]] require them and physicists are actively [[https://en.wikipedia.org/wiki/Magnetic_monopole#Searches_for_magnetic_monopoles|scouring the universe]] for any sign of magnetic monopoles. We will talk about [[184_notes:perm_mag|why we think magnetic monopoles do not exist]] later.
+Rather than talking about the two types of charges (positive and negative), with magnets we talk about the two magnetic poles - north and south poles. **Magnetic poles are not the same thing as electric charges**, although they do interact in similar ways. (Again, this is because the magnetic interaction is related to the electric interaction as we will see later.) We observe that a north pole on a magnet will repel another north pole and a south pole will will repel other south pole - following the "likes repel" rule. Whereas, we observe that a north pole will attract a south pole of a magnet - following the "opposites attract" rule. However, unlike with electric charges, **a [[https://en.wikipedia.org/wiki/Magnetic_monopole|single magnetic pole]] (sometimes referred to as "monopole") does not appear to exist**. For example, as far as we know, it is impossible to have a single north pole magnet - instead a magnet always comes with both a north and south pole. Even if you cut a magnet in half, each half will then have a north and south pole. While we believe these monopoles do not exist, [[https://en.wikipedia.org/wiki/Magnetic_monopole#Grand_unified_theories_2|some theoretical descriptions of the universe]] require them and physicists are actively [[https://en.wikipedia.org/wiki/Magnetic_monopole#Searches_for_magnetic_monopoles|scouring the universe]] for any sign of magnetic monopoles. We will talk about [[184_notes:perm_mag|why we think magnetic monopoles do not exist]] later.
 Also similar to the electric interaction, if you have stronger magnets or if the poles are closer together, there is a stronger magnetic interaction. You may have felt this if you have ever tried to push two repelling magnets really close together - the closer you bring them, the harder they push each other apart.