All Questions
6
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How can an experimental physicist create a free electron gas in air? [closed]
Suppose an experimental physicist has to create a free electron gas in a test chamber filled with air or any gas. They can do this with arcing, photoelectric effect, or others. What would be the best ...
- 1,896
0
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1
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Electromagnetic Induction experiment with solenoid
The experiment is as follows
A solenoid is connected to a galvanometer and a magnetised iron rod is passed through it. (the apparatus is not ideal, and there is no zero error in the galvanometer)
I ...
0
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0
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221
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Magnetic field measured in a rotating frame
Consider that we have a magnet and a magnetometer (a fluxgate magnetometer with a single coil), standing still as shown in fig 1.
In fig 1, the magnetic field measured at the axis (z1) of the ...
- 301
1
vote
1
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641
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Can I measure light intensity using only .jpg pictures?
I have two pictures. On first one can see a lamp shining straight into my smartphone's objective and on the second picture one can see the same lamp but covered with a piece of paper.
Can I use those ...
- 3,034
-1
votes
1
answer
399
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Equation to describe the magnetic field sensed by a magnetometer
There are a magnetometer and a magnet placed at some distance D from it. We can assume that the magnet is a generic bar magnet. We can also assume that the Earth magnetic field is zero since the ...
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131
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How big can be gradient of magnetic induction (in lab)
I'm thinking about magnetic levitation and how big force can push a diamagnetic when we put it in inhomogenious magnetic field.
As far as I know, force exerted on a diamagnetic is proportionald to $\...
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