the purple juice that changes colour: acid or base, without asking a book
Built as a memo rather than a table: the thing worth hanging it up for reads across the room, with the full reference in smaller type below it.
Three sizes in one archive — from a sheet on the fridge to a poster on the wall.
Don’t test ammonia or drain cleaner without an adult nearby — they’re on the scale only as a landmark, not for the experiment itself.
The colour shift isn’t special to cabbage — it comes from a pigment called anthocyanin, and cabbage just happens to carry a lot of it.
Red onion, blackberries and blueberries have it too, and give the same colour-changing trick against acids and bases.
Why the numbers can be trusted. Every countable number here is computed from data rather than typed in, and the sheet must pass 4 independent checks before it is allowed to build — how many items there are, the order they come in, and the claim in the highlighted box itself. If one fails, there is no file.
thirteen forces of wind — from water like a mirror to a wave of fourteen metres
three antigens, eight types — and the one rule the whole table of compatibility follows from
three levels of the troposphere to one scale, and the ten genera that live in them
sRGB, Display P3, Rec. 2020 and ProPhoto RGB on the CIE 1931 chromaticity diagram