@historycalendar Interesting story. I knew a zoology technician at Edinburgh who was tasked to preserve the skeleton of a deceased giraffe from the zoo. She recounted its long neck draped up the stairs and wondering where to start. You may like this ... https://t.co/TZ7pGZU48f
From Dingwall to Dundee, this @WoodBlocX elephant at @DundeeBotanics today. In 1706 a pet elephant evicted from an Edinburgh flat ended its days in Dundee after the baker below grew tired of dung in the dough. The sad tale is told here... https://t.co/ImlHzYsDBV
The rescue poinsettia thinks it's November. Back in 2024 @iain_smellie bought a sorry looking specimen. I put a cutting in some water. It did nothing much for months then in July it suddenly shot out roots overnight and started growing new foliage. Look what appeared yesterday.
The rescue poinsettia thinks it's November. Back in 2024 @iain_smellie bought a sorry looking specimen. I put a cutting in some water. It did nothing much for months then in July it suddenly shot out roots overnight and started growing new foliage. Look what appeared yesterday.
Mulled wine? No, it's that other festive favourite, mulled vitriol. @iain_smellie got me a red cabbage for Christmas so I've steeped it in dilute H₂SO₄'s to find the safest extract that stores well. Hold tight for the update this time next year. #JamesWatt#GardenIndicators
240 years ago James Watt was discovering red cabbage indicator. 420 days ago I repeated his experiments. With Watt's acidic advice, my extract is 14 months old, still works and doesn't smell (bad). Here it is at some popular pH values. #GardenIndicators https://t.co/gJONq0jhJv
If Snow White ebowed her way in for a bite of this "Scrumptious" science apple, she'd find something else got there first. The non-rotten part was delicious and the peel produced a pink extract that turned apple(ish) green in base. Lovely aluminium complex too. #GardenIndicators
After seeing apples in ammonia, @iain_smellie and I wondered what would happen in sulfur dioxide. Anthocyanins in the red flavylium form react with bisulfite to make colourless flavene sulfonates. SO₂ from hydrochoric acid + sodium metabisulfite (Na₂S₂O₅). #GardenIndicators
Spooky light or Barometric light observed when mercury sealed ampoules under low pressure are shaken or the vapour excited using a Tesla coil. #mercuryglow#Hgdischargetube#TECHOGNITION#Techsrule
https://t.co/cPgSjm48s3
It’s the annual art exhibition at school. These are my RGB plots showing the pH profiles from 1-14 of a pink gladiolus (top left), Blackberry (top right), bright pink Busy Lizzie (bottom right) and purple pansy (bottom left). All similar, subtly different #GardenIndicators
It’s been a long time, but I’ve made a new Shinoda test video for the @Gardenindicators YouTube channel. This one features onion skin, the outer part so very easy to extract. https://t.co/Gfb4KPkxus
Rainbow fizz neutralisation with N5 Chemistry this morning! 🌈 hydrochloric acid reacting with sodium carbonate to produce sodium chloride + water + carbon dioxide! 🫧 @MonifiethHigh#Nat5#chemistry#neutralisation P.S. it turns green at the end!