Charge in a uniform magnetic field in 3D

jmz

CoLoS
Newbie

Offline

Posts: 3

1 Charge in a uniform magnetic field in 3D

Embed this message

on: March 10, 2010, 08:27:42 pm » posted from:Murcia,Murcia,Spain

You can change the orientation of the magnetic field. If you open the control window you can also modify the charge options

Embed a running copy of this simulation

Embed a running copy link(show simulation in a popuped window)

Full screen applet or Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License

Please feel free to post your ideas about how to use the simulation for better teaching and learning.
Post questions to be asked to help students to think, to explore.
Upload worksheets as attached files to share with more users.

Let's work together. We can help more users understand physics conceptually and enjoy the fun of learning physics!

chargeinNS.gif (25.13 KB, 801x502 - viewed 192 times.)
	Logged

lookang

Hero Member

Offline

Posts: 1728

http://weelookang.blogspot.com

2 Re: Charge in a uniform magnetic field in 3D

Embed this message

Reply #1 on: March 10, 2010, 09:35:59 pm » posted from:Singapore,,Singapore

nice applet!

i have a couple of suggestions but i will just give one for now.
make the field a volume with some transparency , the lines currently alone is hard for learners to appreciate the region of the 3D space where there is magnetic field lines.

wow, U r a Colos member! cool! hope to see more applets from U!


« Last Edit: March 10, 2010, 09:39:49 pm by lookang »	Logged

jmz

CoLoS
Newbie

Offline

Posts: 3

3 Re: Charge in a uniform magnetic field in 3D

Embed this message

Reply #2 on: March 11, 2010, 11:25:32 pm » posted from:Murcia,Murcia,Spain

Quote from: lookang on March 10, 2010, 09:35:59 pm

make the field a volume with some transparency , the lines currently alone is hard for learners to appreciate the region of the 3D space where there is magnetic field lines.

I think it is a good idea, I'm working on it, please let me know if you have more comments


	Logged

lookang

Hero Member

Offline

Posts: 1728

http://weelookang.blogspot.com

4 Re: Charge in a uniform magnetic field in 3D

Embed this message

Reply #3 on: March 12, 2010, 09:02:54 am » posted from:SINGAPORE,SINGAPORE,SINGAPORE

from the point of a learner, it will make learning relational when it is possible for the the learner to verify the equation of motion of a charged particle in B field.

F = v^B*q

in the case of a constant velocity and in a circular motion case

F = m*v*v/r

v^B*q = m*v*v/r

B*q = m*v/r

make B, r, m, v measurable helps the learner to understand the equation is really a suitable model to predict the motion.

http://www.lon-capa.org/~mmp/kap21/cd533capp.htm
has some interesting features you may take reference from


	Logged

Fu-Kwun Hwang

Administrator
Hero Member

Offline

Posts: 3053

5 Re: Charge in a uniform magnetic field in 3D

Embed this message

Reply #4 on: March 12, 2010, 04:00:15 pm » posted from:Taipei,T\'ai-pei,Taiwan

$\vec{F}=q\vec{v}\times\vec{B}$ .
The following show a charged particle trapped bwtween two uniform field.
You can use sliders to change the width and the separation between two sets of magnet.
The magnetic field is assumed to be uniform $Bz\hat{z}$ inside the magnet region. and the field is zero when outside the boundary.

You can change the location and velocity of the charged particle with mouse drag and drop or with sliders.

Embed a running copy of this simulation

Embed a running copy link(show simulation in a popuped window)

Please feel free to post your ideas about how to use the simulation for better teaching and learning.
Post questions to be asked to help students to think, to explore.
Upload worksheets as attached files to share with more users.

Let's work together. We can help more users understand physics conceptually and enjoy the fun of learning physics!


	Logged

lookang

Hero Member

Offline

Posts: 1728

http://weelookang.blogspot.com

6 Re: Charge in a uniform magnetic field in 3D

Embed this message

Reply #5 on: December 08, 2010, 12:17:04 pm » posted from:-,-,SINGAPORE

Hi prof,

i noticed a bug in the direction of F magnetic.

// use return q*v*(-Bz) instead of return q*v*(Bz); becaue Bz is define as down positive

btw i manage to create 2 variant simulations
Ejs Open Source Charge Particle in Magnetic Field B Java Applet in 3D
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1972.msg7328#msg7328

Ejs Open Source Cyclotron Java Applet in 3D
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=2021.msg7600#msg7600

i will update the 2 variant simulations soon!


	Logged

Fu-Kwun Hwang

Administrator
Hero Member

Offline

Posts: 3053

7 Re: Charge in a uniform magnetic field in 3D

Embed this message

Reply #6 on: December 08, 2010, 10:37:14 pm » posted from:,,Taiwan

Thank you for the bug report. It is updated now!


	Logged

Pages: [1] Go Up

Progress is impossible without change; and those who cannot change their minds cannot change anything. ..."George Bernard Shaw(1865-1950, Irish dramatist, essayist and critic, Nobel Prize for Literature 1925)"

« previous next »

Related Topics
	Subject	Started by	Replies	Views	Last post
	Charged particle motion in uniform magnetic field (2D) Electromagnetics	Fu-Kwun Hwang	0	87037	January 29, 2004, 08:51:38 pm by Fu-Kwun Hwang
	A super-conducting loop moving across a uniform magnetic field region. Electromagnetism	Fu-Kwun Hwang	0	9252	February 25, 2007, 08:25:39 pm by Fu-Kwun Hwang
	A super-conducting loop moving across a uniform magnetic field region. electromagnetism	ahmedelshfie	0	2700	May 25, 2010, 02:12:14 am by ahmedelshfie
	Charge in a uniform magnetic field in 3D electromagnetism	ahmedelshfie	2	3653	October 04, 2010, 12:23:30 pm by lookang
	charged particles and non uniform magnetic field/board:26-1- « 1 2 » Request for physics Simulations	danielemateriale	45	10487	June 30, 2013, 10:26:12 pm by danielemateriale

	Author	Topic: Charge in a uniform magnetic field in 3D (Read 12151 times)
0 Members and 1 Guest are viewing this topic. Click to toggle author information(expand message area).