Understanding Notation: Deciphering the '<<' Symbol

[Janvier]

[SOLVED] A Simple Question on Notation

Homework Statement

For this, P=rho

"A ball of density Pb (with Pb << Pa) and..."

What does the "<<" symbol indicate? I have never seen this notation before.

Thanks,

Janvier

 

[rock.freak667]

<< means "much less than"

 

[Janvier]

Thanks!