cross-posted from: https://lemmy.world/post/41425995
…because the shape of the water bottle isn’t uniform either. Part of my new year’s resolution is to drink 4 liters of water per day, so I spend a lot of time looking at those lines. Edit: 4 liters is a lot, but appropriate for my size and activity level. Without conscious consideration I don’t drink enough water. It looks blue because the bottle is blue.
Your bottle isn’t a uniform shape. There’s internal volume missing where the handle is, requiring greater vertical length to equate to the same volume elsewhere