Recent content by Ruptor

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    Matter generating magnetic field

    The electrons form a cloud around the nucleus and clouds are not fixed. The frog suspended in a magnetic field is a classic demonstration that dipoles can be created within atoms that are not ferromagnetic. http://www.physics.org/facts/frog-really.asp If there is an electron it can be moved...
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    Matter generating magnetic field

    All I am doing is asking questions assuming that experts here will already know the answers and offering ideas if I don't get the explanations. Isn't that the point of forums so one can learn? If I don't get answers then I pursue it on my own. Has there ever been an experiment that spins a disc...
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    Matter generating magnetic field

    It sounds right when you put it like that but iron doesn't have any charge and yet the structure of electrons in iron can be arranged to give a magnetic field. So if one spins a different element fast enough that has orbiting electrons they would be forced out or their orbits would be stretched...
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    Matter generating magnetic field

    Anybody have any idea whether moving matter creates a magnetic field? Perhaps the overall neutral charge means no charge is being moved so no field.
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    Matter generating magnetic field

    A moving electron makes a magnetic field so moving matter that is full of electrons should make a magnetic field. Magnetars are a cosmic example but has a magnetic field ever been measured from a moving object on earth. An experiment that springs to mind is the 200lb gyroscope that Professor...
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    Why is the speed of light different when traveling in different materials?

    Isn't the speed of light a constant. Having said that if the light takes longer to pass through say glass then it must be travelling further.
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    Nature of Coil and magnet fields?

    I find it difficult to visualise how the magnetic field generated by a coil can be the same as the field of a permanent magnet. Are the magnetic fields the same or is it just that the effects are the same in that they both attract iron or magnets in the same fashion? Visualising the field...
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    Why 3 lines in Zeeman effect?

    Thanks Khashishi the penny has finally dropped. Once you mentioned photons I realised I was thinking about the lines in terms of electrons and not light.
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    Why 3 lines in Zeeman effect?

    The electron has a magnetic moment therefore has to be affected by the applied magnetic field so how can there be a middle line?
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    Why 3 lines in Zeeman effect?

    Thanks for answering but I don't understand why the middle line is present. I have read about the Zeeman effect here http://hyperphysics.phy-astr.gsu.edu/hbase/quantum/zeeman.html but none of this explains what the middle line represents so can someone explain it in simple English for me...
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    Why 3 lines in Zeeman effect?

    Why is there a central line when a magnet is used to split the electrons? I would have thought that since electrons have two characteristic states that one type would go one way and the other type the other way so the middle should be blank.
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    How is inductor energy stored

    Thanks for your explanations guys. I was under the impression that coils had greater inductance than straight wires but if it is the other way around then size of loop and the magnetic coupling across them is irrelevant to my original question. The answer is that the magnetic field around the...
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    How is inductor energy stored

    Yes the wire has inductance but as Alephzero says the inductance of the wire in a very large loop doesn't account for the inductance. What I am getting at is if the loop is very large like 1000 miles the inductance is very large but the field across the loop decreases at a squared rate so at...
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    How is inductor energy stored

    The standard explanation is that the magnetic field stores the energy but when I start considering different sizes of a single loop inductor with a current flowing in it things start to get a bit vague. As the loop diameter is increased the inductance goes up so the single loop can store more...
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    Bohr model & relativity on large atoms?

    So I guess the relativistic increase in mass of the faster electrons in heavier elements is the reason the atomic masses don't go up in nice multiples of proton+neutron+electron masses in the periodic table.
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