70946
Consequences at a boundary
As said above we make medium 1 the perfect conductor. This is so that the vector An points out into the adjacent space, as shown in Figurę 6.3. For d.c.fields we would havethe forms already quoted as equation 6.1 to 6.4 with Eti and Dm set to zero, viz Etz = 0(6.13)
Dnz = ps(6.14)
An x (Ht2 -Hti) = Js(6.15)
Bn2-Bm = 0(6.16)
For time varying fields we will consider in particular the sinusoidal steady State in which we represent vector fields by błock capitals as shown in Figurę 6.3.
Because in the sinusoidal steady State all fields in the perfect conductor are now zero we will drop the subscript 2 from the fields in the adjacent space.
In the light of the above discussion, and realising that both Jsand psare allowed, we now have boundary conditions in the form Et= 0(6.17)
Dn= ps(6.18)
An x Ht= Js(6.19)
Bn= 0 (6.20)
We should notę the change in notation to that appropriate to the sinusoidal stead State.
This finał set of boundary conditions is the most commonly encountered in
electromagnetic
theory.
We notę in relation to Figurę 6.3 above, the reference directions for Jsand Htare easily established through the right hand rule applied to Js.
Wyszukiwarka
Podobne podstrony:
Circulation of a Vector When a closed path C is defined in a vector field F as shown Figurę 1.6 we m
Possible interior fields We are going for definiteness to make medium 1 the perfect conductor. In th
9 3 An important issue about negoliation is changing ihe way the think about us. The impression we m
htdctmw 013 When you re up above the scene, looking down at it, as in this panel, what else cou
Can I build a tower of blocks as tali as I am? What’ll happen If we make the bike ramp go even highe
CCF20100216 000 2 The production of speech sounds 2.1 Articulators above the larynx Ali the sounds w
mus dev(7) 33 As I said, all my letters are personally writton and X do not, at otker instructors do
voir / on t h e road 5HEW0RKED AS AN ONCOLOGY NUR5E AT A CHILDREtfS HOSPITAL Many tlmes we heard fro
CCF20100216 000 2 The production of speech sounds 2.1 Articulators above the larynx Ali the sounds w
00139 >858430acb91880687589de10557be5 140Simpson & KeatsEconomic-Statistical Approach Using Tra
Summary At ITeE - PIB in Radom, an ecological industrial gear oil, denoted as Arol P220, has been fo
step21 part 42 make surę the larger section of part 40 (the seam) is at the bottom!!
Jak zrobić księżyc ?sy Crescent Moon Tutorial PS by Rach Resources ANG In this example, we // make i
m85) Viking hełm et as portrayed on a carved antler of the nth century, found at Sigtuna, Sweden.
mbs 067 MY BREATHING SYSTEM The Great Mistake of Swedish Drill. As already mentioned, we ought to us
więcej podobnych podstron