From f5dca74c96c911042c862113de3f9b4b71e3335e Mon Sep 17 00:00:00 2001
From: Thomas Dehaeze <dehaeze.thomas@gmail.com>
Date: Sat, 6 Feb 2021 16:00:01 +0100
Subject: [PATCH] Update Content - 2021-02-06

---
 content/book/morrison16_groun_shiel.md | 27 +++++++++++++++++++++++---
 1 file changed, 24 insertions(+), 3 deletions(-)

diff --git a/content/book/morrison16_groun_shiel.md b/content/book/morrison16_groun_shiel.md
index 77c758a..48905d4 100644
--- a/content/book/morrison16_groun_shiel.md
+++ b/content/book/morrison16_groun_shiel.md
@@ -9,7 +9,7 @@ Tags
 
 
 Reference
-: ([Morrison 2016](#org54926a5))
+: ([Morrison 2016](#org7039b1d))
 
 Author(s)
 : Morrison, R.
@@ -43,13 +43,34 @@ This displacement current flows when charges are added or removed from the plate
 
 ### Introduction {#introduction}
 
-<a id="org54b0d86"></a>
+<a id="org40e5e37"></a>
 
 {{< figure src="/ox-hugo/morrison16_field_conf.png" caption="Figure 1: Field configurations around a shieded conductor" >}}
 
 
 ## Magnetics {#magnetics}
 
+<div class="sum">
+  <div></div>
+
+This chapter discusses magnetic fields.
+As in the electric field, there are two measures of the same magnetic field.
+The \\(H\\) field is the direct result of current flow.
+The \\(B\\) field is the force of induction field that operates motors and transformers.
+As in the electric field, the magnetic field is represented by field lines.
+The \\(B\\) field lines are continuous and form closed curves.
+The \\(H\\) field flux lines follow the \\(B\\) field lines but change intensity depending on the permeability of the material in the magnetic path.
+
+In this chapter, the movement of electrical energy into inductors or across transformers is discussed.
+This extends the ideas that both fields are need to move energy.
+Both electric and magnetic fields are need in transformers action or to place energy into an inductor.
+It will be shown that iron cores in transformers reduce the magnetizing current so that transformer action is practical at power frequencies.
+The idea that a changing electric field creates both a displacement current and a magnetic field discussed in Chapter 1.
+In this chapter, it is shown that a changing magnetic field produces both an electric field and voltages.
+Both fields must be in transition before an electrical energy can be moved.
+
+</div>
+
 
 ## Digital Electronics {#digital-electronics}
 
@@ -80,4 +101,4 @@ This displacement current flows when charges are added or removed from the plate
 
 ## Bibliography {#bibliography}
 
-<a id="org54926a5"></a>Morrison, Ralph. 2016. _Grounding and Shielding: Circuits and Interference_. John Wiley & Sons.
+<a id="org7039b1d"></a>Morrison, Ralph. 2016. _Grounding and Shielding: Circuits and Interference_. John Wiley & Sons.