Thread: non-Natural Electromagnetic Field

Asides from Maxwell's equations, which are too complicated for me, I have found these two. If anyone is familiar with this, I would greatly appreciate your help.

Now, an equation to find the force of a magnetic field and electric field are as follows, repectively:

F = qv x B

where F is the force;
q is the value of the test charge;
v is the velocity of the charge;
B is the vector magnetic field
And x is as follows: "The "x" indicates a vector cross-product, which in this case means a magnetic force will only arise if the velocity of the charge is perpendicular to the magnetic field. The mathematical cross product determines the direction of the magnetic force."

and

F = qE

where F is the force;
q is the value of the test charge;
E is the vector electric field.

Anyone know? In fact, is it even possible to solve these without having proper equipment? Also, is anyone familiar with tesla equations? As in finding the tesla value of an electromagnetic field?

I suppose anything else anyone may now has the potential to be helpful; follow your whims, as long as those whims pertain to electromagnetic fields.

What exactly are you planning to do?

I am testing the effects of electromagnetic field on silk worm and spiders in connection to the uncertainty of their effects on health. I have done some reading, and I am unclear of the differences between thermal electromagnetic radiation and non-thermal electromagnetic radiation. Is thermal radiation that which is characterized by heat which is able to break down chemical bonds? And what of non-thermal radiation? Also, an equation to find the tesla amount would be most beneficiary so I would be able to compare the electromagnetic field I created to those that are created by power lines, cell phones, electric wiring, et cetera.

Well, I'm not sure about the difference between thermal and non-thermal radiation. I'd guess that it has something to do with the components of the radiation, like matter particles and energy particles but I don't really know. Faraday's Law of induction is just:
EMF = -d(magnetic flux)/dt
so:

magnetic flux = -int(EMF dt)

so basically, the magnetic field is greater, the faster the electric field changes.

Originally Posted by IllusionConcerto

I am testing the effects of electromagnetic field on silk worm and spiders in connection to the uncertainty of their effects on health. I have done some reading, and I am unclear of the differences between thermal electromagnetic radiation and non-thermal electromagnetic radiation. Is thermal radiation that which is characterized by heat which is able to break down chemical bonds? And what of non-thermal radiation? Also, an equation to find the tesla amount would be most beneficiary so I would be able to compare the electromagnetic field I created to those that are created by power lines, cell phones, electric wiring, et cetera.

biological biengs are uneffected by magnetic and electrical fields. They do not take anykind of damage in such. But electromagnetic radiation can cause destruction on their genetic code

Originally Posted by Zelos

Originally Posted by IllusionConcerto

I am testing the effects of electromagnetic field on silk worm and spiders in connection to the uncertainty of their effects on health. I have done some reading, and I am unclear of the differences between thermal electromagnetic radiation and non-thermal electromagnetic radiation. Is thermal radiation that which is characterized by heat which is able to break down chemical bonds? And what of non-thermal radiation? Also, an equation to find the tesla amount would be most beneficiary so I would be able to compare the electromagnetic field I created to those that are created by power lines, cell phones, electric wiring, et cetera.

biological biengs are uneffected by magnetic and electrical fields. They do not take anykind of damage in such. But electromagnetic radiation can cause destruction on their genetic code

1) Many specied of birds and bats navigate using the Earth's magnetic field.

2) Where do you think electromagnetic radiation comes from ?

1: yes but they dont take harm they just get confused, maybe they hit a wall but thats just cause they are stupid

2: shifting electrical or magnetical fields
and other soruces aswell

Ok, well, I found this equation:

B=F/IL

which is what I was looking for. However, F is the force experienced by a wire, measured in Newtons. How would I find this?

Also, how woulud I find the hertz value of an electromagnetic field? And, the velocity of an electron traveling through a copper wire? Which is incorporated in the second part of that equation F=BQv

you find it by measuring it in different ways, netwonmeter using gravity etc

This is a tough subject, I've done a little research for a project in the past, but as I understand it:

Static electric fields are distribution of electrically charged particles in space. The movement of these particles (electrons) create a magnetic field. Thus a purely static field has an electric field component but no magnetic field component. The magnetic field component is perpendicular to the electric field and increases with frequency (rapidity of change in electric field). This is an electromagnetic field.

At higher frequencies (20-30kHz) the electric and magnetic fields are tightly coupled and form an electromagnetic wave the propogates in a direction orthogonal to the electric and magnetic fields.

High frequency magnetic waves are called electromagnetic radiation and are composed of discrete packets of energy called photons. The energy of a photon is proportional to and increases with the wave frequency.

At some point (i don't know where off hand) the frequency and hence energy is great enough to break molecular bonds and is said to be ionizing. Only very high frequency radiation such as gamma rays are ionizing, radio waves used in communications and 50Hz power lines are non-ionizing.

Radio frequency waves can cause a heating effect (perhaps what you mean by thermal radiation?) though and this is usually what health concerns arise from. RF cannot directly damage DNA though some people think it may disrupt some processes such as cell division. It has also been suggested that a resonance between some electrochemical processes in the brain and RF can cause adverse health effects though this is not generally accepted.