yaar i think its the wall of the bubble....... reason......is that the inverse of it would be hypothetical...
denisty = mass/ vol.
and only a higher denser body can enclose a lower one.... otherwise difusion will take place in the bubble.......
that's my take .. correct me if i'm wrong.... cheers
" the only thing thats always constant in this world , is change itself.....
so it is better to adapt to the situation or life makes you adapt to it (painfully)..."
- Kundan a.k.a Juan dankh......
Moderation Team
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