Re: [Phys-l] Hall effect lab experience with common materials ?

[Bernard Cleyet <bernardcleyet@redshift.com>]

The "kicker" is common life material.     Of course, your problem is  
solved if one may argue successfully since Bi is an ingredient in  
Pepto Bismol, it's a common life material.

Bi has a hugh Hall coefficient.

http://adsabs.harvard.edu/abs/1927PhRv...29..332H

Here's an ancient expt. using a potentiometer and a bismuth ribbon.    
The Type K  (L & N)   Has a resolution of (with careful technique) of  
one microvolt.  so it's obvious that a typical lab "volt" meter will do.

http://digital.library.okstate.edu/OAS/oas_pdf/v44/p114_116.pdf


I played w/ a Corbino disk (ca. 1962) and didn't have an expensive  
meter.

bc wonders if that lab could afford a research grade pot.




On 2009, Sep 15, , at 08:43, CARABAJAL PEREZ, MARCIAL ROBERTO wrote:

> Hello:
>
> I am trying to design a Hall effect Lab demonstration, but using  
> the simplest way possible, although we have the Lab instruments,  
> the idea is to built a sensor with common life materials .  Could  
> it be possible ?.
>
> My best regards.
> Roberto
>
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