# symbole?

#### Ziggey

Joined Nov 4, 2015
15
what does this mean?

ΦB

#### bertus

Joined Apr 5, 2008
20,102
Hello,

It could be "magnetic flux".

Bertus

#### DerStrom8

Joined Feb 20, 2011
2,390
what does this mean?

ΦB
What is the context? Where do you see this filter?

From Wikipedia:

The lower-case letter φ (or often its variant, ϕ) is often used to represent the following:

The upper-case letter Φ is used as a symbol for:

The diameter symbol in engineering, , is often incorrectly referred to as "phi". This symbol is used to indicate the diameter of a circular section; for example, "⌀14" means the diameter of the circle is 14 units.
I would expect in this case it is denoting magnetic flux because the symbol is often paired with a "B" in those cases (though most often it is a subscript):
$image=https://latex.codecogs.com/gif.latex?%5CPhi%20_%7BB%7D&hash=49fae7fea437024af563e846b9b38dc7$

More wikipedia: https://en.wikipedia.org/wiki/Magnetic_flux

EDIT: Bertus, you beat me to it!

#### Ziggey

Joined Nov 4, 2015
15
Towards the bottom.

http://physics.info/inductance/

That's what I was thinking. I just wanted to make sure though the equation following it may come in handy so I wanted to know.

Thank you both!!
Ziggey