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What does this symbol stand for? 
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#1
Dec504, 04:29 PM

P: 42

4πε0r^2
Thats 4pi (backwards 3 0) R squared. I forget what the backwards 3 o stands for can someone help me out. 


#2
Dec504, 04:42 PM

P: 51

Backwards 3_0 thing is 'epsilon nought' or the permittivity constant.



#3
Dec504, 07:46 PM

P: 578

Backwards 3_0 thing = [itex]\epsilon_{0}[/itex]



#4
Dec504, 08:00 PM

P: n/a

What does this symbol stand for?
"epsilon zero" i think it's called ... the permitivity of free space or something like that



#5
Dec504, 09:57 PM

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PF Gold
P: 10,427

[tex]\epsilon_0 = 8.854187817 \cdot 10^{12} F/m[/tex]
It's called the "electric permittivity of free space," and commonly pronounced "epsilonzero" or "epsilonnaught."  Warren 


#6
Feb510, 07:48 PM

P: 3




#7
Feb510, 08:19 PM

HW Helper
P: 2,322

A general rule is that weirdlooking symbols are almost always Greek letters.



#8
Feb810, 02:55 AM

P: 3

Knowing it's a greek letter lets us know they used it to write letters and the like, it gives us no clue at all as to what it pertains to in physics or other maths. Obtaining a firmer grasp of the English language will be beneficial to your ability to understand the question that has been asked :) 


#9
Feb810, 03:48 AM

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P: 16,091

Wikipedia searching on "ε0" returns exactly the page you wanted. 


#10
Feb810, 07:07 AM

P: 42




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