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Expert: Daniel Mazur - 9/4/2006


Question
sir,
post office box is used to measure the resistance of metal as we know. can you please say that why did the post office box get that name.. please donot say that "it's out of my expertise".. atleast recommend a suitable website giving the apt answer for it..
please reply sooner...
thanking you..
-sharmi

Answer
Dear Sharmi S Nair,

I would not have chosen "it's out of my expertise", my opinion would have been "this is a non-serious question". I really cannot help people on etymology (of post office boxes or anything else), I am here to help with physics related subjects, I apologize.

It is not clear from the question at all, what sort of physics you need help with. If you want to measure resistance of your post office box, please ask that way and I will gladly try and help. The answer is: touch it with multimeter probes on opposite ends, anyway.

I hope to be able help next time.
Daniel

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Daniel Mazur

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Questions anyone (teenager, undergrad, graduate, professional) may ask on physics, mathematics or inorganic chemistry. Questions may concern subjects themselves or a possible future career in them, if you need advice on a school or hobby project, or you just came across a question that is beyond your current curriculum. I answer bare textbook problems sometimes, but I reserve the the right to redirect you to Physics-Physics section. The kind of questions I like to answer: I just started having science classes at school and they seem difficult, but I enjoy them. Where do I find more information on this, which is not in textbooks but still comprehensible to me? Just leaving high school, and I feel science is really the thing for me. Can you recommend a school and an undergrad program suitable to my inclinations? I am in my second undergraduate year in Physics. We learned the basics of universe expanding this year, the Hubble constant and all that, but invited speakers that gave talks on astrophysics in our department seemed not to agree with this model at all. Is it of any use at all? I am building a [materials research] experimental device for my masters/doctorate thesis and I have the following problem:... I have tried ..., but it still doesn't work. Where might the problem be?

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