Invisibilty Cloaks

[vaseemf <vaseemf@yahoo.com>]

No: HPFGUIDX 48947

Susan:
> If Mad Eye Moody's magical eye and the Marauder's Map can see Harry 
> in his Cloak, it would indicate that the Cloak is not completely 
> impervious. (It's been hinted in PS and CoS that Dumbledore can 
> even see through it, magical eye or not) So do the same old laws of 
> physics that bind the rest of us bind someone wearing a Cloak? If
> they can be felt and touched, they obviously don't disappear, they 
> are just concealed. So do they cast a shadow? And if, as I suspect, 
> they do, why doesn't anyone notice?!
   
   Well if you are going to go with the physics thing, the thing that 
would make some one invisible it to make sure that light does not get 
bounced back off the the person who is invisible. They can either 
bend the light around the person or have the light pass through the 
prson unaltered. Either of these case would not allow a shadow to 
appear since it only appears when light bounces of something in front 
of a light source. Also if there was a shadow then there would be 
pretty much no point to it. 
  One of the things that truobles me is how Harry can see the cloak. 
If light passes through it or around it he shouldn't be able to see 
it. My guess is that it needs to be close to a living thing in order 
for it to work. I've also wondered which creatures it works on. 
Fantastic Beasts says that the thread that they have weaved comes 
from an animal that can turn it self invisible. If this is true it 
must work with animals. Also, can muggles use it? I doubt it. It 
seems to me that the MoM would probably put a charm on it to make it 
so that Muggles can't use it. 
  In SS/PS it hints that the cloack may not work on animals such as 
cats. I think that it should because the thread comes from an animal 
that lives out in the wilderness. It wouldnt be a very useful 
adaptation if only humans who rarely go to their habitat were the 
ones who could not see them
Any thoughts?

   - Sajid (A guy's name), who is probably the youngest person on 
HPFGU but got sick of kids message boards