[sdiy] MRI time dilation?

[Nils Pipenbrinck]

> >WHY then does the aluminum block drop slower when placed in the MRI
field?

That's easy:

When the block of alumiminium is falling trough a magnetic field, it inducts
current. This current works like a eddy current brake. That means, the
aluminium itself doesn't feel much magnetic force. The eddy currents however
create a magnetic field around the block which cause a force to remain at
it's position.

As long as the block is moving these forces will work on the alu-block, they
are however not as strong as the gravity (if you're using a superconductor
instead of alu they might cancel out the gravity at all)

In the end, this makes the block falling slower. Gravity is still working as
usual, and no time dilation is here.. No science fiction, but well known
physics make the block falling slower..


Nils