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Steve_hi
Member

Canada
38 Posts
Posted - Mar 15 2007 :  6:41:23 PM  Show Profile  Click to see Steve_hi's MSN Messenger address  Reply with Quote
Does any one have agood schematic with parts list for a pH meter able to measure from 0 to 14 ph please let me know i need one and want to build this for my next project
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mrgone
Nobel Prize Winner

USA
1176 Posts
Posted - Feb 07 2008 :  11:26:13 AM  Show Profile  Reply with Quote
quote:
Originally posted by CurrentOverflow

Thanks for your help.
Velocity
v = c tanh(aT/c)

c is what? T= time right? ooohhh you mean mu right? (micro symbol) and ok thanks i think i get it now

However the formula I was looking for involved sin and cos.
Thanks once again


Don't have time to look at this whole thread, but I think someone forgot to answer your question. C is usually the speed of light, considered to be a constant.
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cyclopsitis
Nobel Prize Winner

Canada
732 Posts
Posted - Feb 07 2008 :  6:18:49 PM  Show Profile  Click to see cyclopsitis's MSN Messenger address  Reply with Quote
C is the speed of light in e=mc2
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cyclopsitis
Nobel Prize Winner

Canada
732 Posts
Posted - Feb 07 2008 :  6:20:39 PM  Show Profile  Click to see cyclopsitis's MSN Messenger address  Reply with Quote
taht 3.00X10^8meters per second or a 186,000miles per second
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mrgone
Nobel Prize Winner

USA
1176 Posts
Posted - Feb 07 2008 :  7:19:42 PM  Show Profile  Reply with Quote
taht? Hmmm...must be one of those new fangled terms. Oh well, just trying to help.
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cyclopsitis
Nobel Prize Winner

Canada
732 Posts
Posted - Feb 07 2008 :  8:06:46 PM  Show Profile  Click to see cyclopsitis's MSN Messenger address  Reply with Quote
hey mrgone, I speed read the part there and missed that you answered it already. Only after I posted did I notice you gave the answer. Hope I didn't step on your toes! The experiments used to measure the speed of light were really clever! Christiaan Huygens and Michelson are two the two who got the speed of light the closest in the 20th century! Michelson's mirror experiment was genious! Before that Christiaan Huygens using the Jupiter's moon IO! hahaha smart thinking!
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mrgone
Nobel Prize Winner

USA
1176 Posts
Posted - Feb 07 2008 :  8:49:30 PM  Show Profile  Reply with Quote
Hey, that's cool cyclops. I love when I am wrong or corrected about something. That's how you learn :) Yeah it is truely fascinating that they were able to do that. Maybe you could explain the full procedure they used. That is if you have the time. I'm sure we would all love to know.
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