you will need a paper clip, a magnet , some sewing thread and a bit of sticky tape.
Tie the paper clip to one end of the thread. Stick the other end of the thread to a flat surface.
Hold the paper clip up in he air, so that the thread is fully extended.
With your other hand , hold the magment a fer millimeters abover the paper clip (don't let it touch). This takes a bit of practice!
The paper clip will 'levitate, when the downwards force of gravity is equaled but the upwards attractive force of the magnet!
Magic, flying paper clips LOL
You can now see which compounds will let the magnetism 'through'...paper and card will, but iron sheets will not...the iron will shield the magnetism.
Should buy you 30 minutes of quiet ladies!
Please or to access all these features
Please
or
to access all these features
Join the discussion on our Education forum.
Education
Science trick for the half term
8 replies
Blandmum · 29/05/2006 09:08
OP posts:
Please create an account
To comment on this thread you need to create a Mumsnet account.