What does this symbol stand for?

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In summary, the symbols "H", "π", "∆", "Na", and "°" all represent different concepts. "H" stands for hydrogen, "π" (pi) for the ratio of a circle's circumference to its diameter, "∆" (delta) for change or difference, "Na" for sodium, and "°" (degree) for angles and temperature measurements.
  • #1
Lorax
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0
4πε0r^2

Thats 4pi (backwards 3 0) R squared.

I forget what the backwards 3 o stands for can someone help me out
 
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  • #2
[itex]\epsilon_0[/itex]? Permeability of free space. (Or is it permittivity? I always forget which)
 
  • #3
[itex] \epsilon _0 [/itex] is known as the permittivity of free space and is equal to about [itex]8.85~
*~ 10^{-12}~~ F/m [/itex]

It is a proportionality constant relating the electric displacement vector to the field strength.

OR, it can be thought of as a constant connecting electric field (or force) to the values of charge and distance.
 
Last edited:

1. What does the symbol "H" stand for?

The symbol "H" stands for hydrogen, which is a chemical element with the atomic number 1.

2. What does the symbol "π" stand for?

The symbol "π" (pi) stands for the ratio of the circumference of a circle to its diameter, which is approximately 3.14159.

3. What does the symbol "∆" stand for?

The symbol "∆" (delta) is commonly used in mathematics and science to represent change or difference between two values.

4. What does the symbol "Na" stand for?

The symbol "Na" stands for sodium, a chemical element with the atomic number 11.

5. What does the symbol "°" stand for?

The symbol "°" (degree) is used to measure angles and temperature. In geometry, it represents 1/360th of a full circle, and in temperature, it represents a unit of measurement equivalent to 1/100th of the difference between the freezing and boiling points of water on the Celsius scale.

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