The Magnetic Reynolds number is a dimensionless group that occurs in magnetohydrodynamics. It gives an estimate of the effects of magnetic advection to magnetic diffusion, and is typically defined by:
where
- is a typical velocity scale of the flow
- is a typical length scale of the flow
- is the magnetic diffusivity
Read more about Magnetic Reynolds Number: General Characteristics For Large and Small, Relationship To The Reynolds Number and Péclet Number
Famous quotes containing the words magnetic, reynolds and/or number:
“We are in great haste to construct a magnetic telegraph from Maine to Texas; but Maine and Texas, it may be, have nothing important to communicate.”
—Henry David Thoreau (1817–1862)
“My dear dear Mother,
If you don’t let me come home I die—I am all over ink,
and my fine clothes have been spoilt—I have been tost in a blanket, and seen a ghost.
I remain, my dear dear Mother,
Your dutiful and most unhappy son,
Freddy.
P.S. Remember me to my Father.”
—Frederick Reynolds (18th century)
“How often should a woman be pregnant? Continually, or hardly ever? Or must there be a certain number of pregnancy anniversaries established by fashion? What do you, at the age of forty-three, have to say on the subject? Is it a fact that the laws of nature, or of the country, or of propriety, have ordained this time of life for sterility?”
—Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)