If all the empty space of atoms were removed, how big would this earth be?

by sskkambad
Tags: atoms, earth, removed, space
sskkambad is offline
Sep25-09, 08:27 PM
P: 2
Hi everyone, first time poster.
Considering some of the things discussed here, I apologize if my question sounds simplistic.

If this earth could be compressed so that all the empty space in atoms would disappear how big would this earth be?
My science teacher once told me that it would be the size of a marble, and I've also heard that it would be the size of a large stadium. I realize it's not an easy thing to estimate but that seems to be quite a difference.

An example of such scales of atoms would be appreciated. (i.e. I've also been told all 6.5 people in this world could be compressed into the size of a kidney bean)

Phys.Org News Partner Physics news on Phys.org
Physicists design quantum switches which can be activated by single photons
'Dressed' laser aimed at clouds may be key to inducing rain, lightning
Higher-order nonlinear optical processes observed using the SACLA X-ray free-electron laser
Vanadium 50
Vanadium 50 is offline
Sep25-09, 09:20 PM
Vanadium 50's Avatar
P: 15,613
The stadium is closer. An iron atom has a radius of about 1.2 x 10-10 m and an iron nucleus about 4.6 x 10-15 m. So there is a factor of about 26000 in radius, which means the earth would be about 500 m across.
Phrak is offline
Sep25-09, 10:23 PM
P: 4,513
The black hole radius of the Earth is about 1 cm.

sskkambad is offline
Sep26-09, 03:31 AM
P: 2

If all the empty space of atoms were removed, how big would this earth be?

Thanks for the answer! Come to think of it, I think my science teacher was referring to the black hole density, not the compressed atom density.

Register to reply

Related Discussions
Empty Space Quantum Physics 4
Feynman's empty space isn't really empty space High Energy, Nuclear, Particle Physics 12
Empty space ? Special & General Relativity 5
Why do atoms prefer filled, half filled, or empty shells?? Atomic, Solid State, Comp. Physics 1