A few weeks ago, I bought a 500ml cola bottle.
As it is not possible to consume the whole bottle in one go, we need to cap the bottle and keep it for later. But, the cola loses its fizz, as it is no longer under pressure inside the cola and the cola itself goes flat.
To preserve the fizz, I poured the cola from one bottle into two smaller bottles. One of the bottles was a smaller cola bottle, while the other one was a juice bottle. After some time, I noted that that the juice bottle had its sides bulging out.
I realized that this was happening due to bottle design.
The larger cola bottle and the smaller cola bottle essentially are tubes. but the juice bottle was a square. Due to their tube / circle design, the gas in the cola puts equal pressure on the sides of the cylinder. But in case of square design of the juice bottle, there is unequal pressure. There is more pressure on the walls of the bottle as compared the corners.
Interesting to know how small things can have big implications.