Ketchup bottles are a solved technology, right? Wrong! As it turns out, there is still great development being done in this space. Industrial imaging company Lumafield reveals to us the secrets of ...

This story appears in the February 2019 issue of National Geographic magazine. Ketchup—that cheerful red sauce sold in handy glass bottles—first came on the American market in the 19th century.

Ketchup sometimes acts like a liquid (it can ... when there are only a few pieces of breakfast cereal floating in your bowl, they tend to clump together and sometimes move to the sides.