Today, while contemplating on the absurdity of life (or, in other words, procrastinating as usual), I stumbled across a strange inflated balloon, the first of its kind that I have ever seen as per my memory.
When I squeezed the inflated balloon on any of the ends, it changed shape (as expected). But, intriguingly, it retained the new shape even after I stopped squeezing it! I could do this as many times as I wanted.
The balloon was made of rubber, filled with air and was absolutely normal in all other respects.
The photos below show one such cycle of making the balloon change shape by squeezing from both ends one after the other.
Now I can imagine why this would happen with a balloon filled with viscous fluid, but why is it happening with air which has almost 0 viscosity? Shouldn't the air always move in the balloon to attain the state of maximum stability?
In the pictures below, one can clearly see (from the shade of balloon colour) that sometimes the top side of the balloon is more pressurized than the bottom side and vice versa. How and why is this possible? Why doesn't the air pressure distribute itself evenly throughout the balloon?