TSny's latest activity
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I think it would be easier to write the potential energy and take derivatives. For the force in the z-direction, I would write... -
TSny replied to the thread 5 charges within a square boundary.When making the approximations for small ##\delta##, you cannot neglect ##\delta## in the denominators as you could in the perturbation...
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TSny replied to the thread Potential difference defined in non-conservative electric field.There will be some static charge distribution on the square loop when it is carrying current. The field of this charge “distorts” the...
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So I get $$T \sin \frac{\theta}{2} = F_e \text{ and } T \cos \frac{\theta}{2} = mg$$ Dividing and rearranging I get $$mg \tan...
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Presumably the question mark at the end is not needed?
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TSny reacted to Steve4Physics's post in the thread Demonstrating a pinhole camera with a screen projector with
Like.
Immediate (and probably not that helpful!) thoughts are... Have you attempted a trial-run to see if you can get it to work? If you look... -
TSny reacted to Andy Resnick's post in the thread Demonstrating a pinhole camera with a screen projector with Like.
I did not use a screen projector, but a colleague and I set up a camera obscura using an empty room (with a window). The demo worked...