how to find the thickness and/or the layers of atom that an aluminum paper has.

Thank you In advance (Nod)

- Oct 9th 2009, 11:47 AMJulian.Ignaciohow to find the thickness and/or the layers of atom that an aluminum paper has?
how to find the thickness and/or the layers of atom that an aluminum paper has.

Thank you In advance (Nod) - Oct 9th 2009, 12:21 PMe^(i*pi)
Do you actually have a problem in front of you?

The usual way to find thickness is to find out the mass, divide by the density and then divide by the area.

$\displaystyle l = \frac{m}{\rho A}$

To find the layers of atom you'd then divide by the atomic radius (and since atomic radii are usually measured in pm you'll get a lot of them

$\displaystyle n_{\text {atomic layers}} = \frac{m}{\rho Ar_{atom}}$

Note all units should be SI - Oct 9th 2009, 12:25 PMJulian.Ignacio
It wouldn't be a problem IF we knew how to do it; the teacher told us to search in the internet, in books or ask a friend to find the answer. In short I don't really have to do the exercise, but due to my curiosity, i'm trying to do it (Wink). Thank you for the answer!! =)

- Oct 9th 2009, 12:29 PMe^(i*pi)
- Oct 9th 2009, 12:38 PMJulian.Ignacio