Andrea Chlebikova

Spend a merry moment or two pondering this moments question: isaacscience.org/questions/me...

#ChatPhysics #iTeachPhysics #SciTeachUK #EduSky ⚖️

Thank you to all of our student and teacher users, you have reached 200 million question attempts!

#SciTeachUK #EduSky

Today's question uses the core GCSE and A Level Chemistry skill of calculating empirical formulae on two compounds responsible for the bitter taste (to some!) of Brussels sprouts: isaacscience.org/questions/bi...

#ChatChemistry #ITeachChem #RealTimeChem #EduSky 🧪

Infographics on the chemistry of chocolate smell and the flavour chemistry of green bean casserole. The two are linked by the presence of earthy pyrazines.

Infographics on the chemistry of chocolate smell and the flavour chemistry of green bean casserole. The two are linked by the presence of earthy pyrazines.

A bit late kicking off #ChemAdvent day 1, but here we are!

This year I'm finding chemical connections between some previous ChemAdvent editions 🧪

First up, earthy pyrazines are the connection between the smells of chocolate and green bean casserole 🍫

Screenshot of a Christmas tree-like shape made up of a rectangular, brown block at the bottom, green-coloured hexagons arranged in a tree shape and a grey star at the top. Each hexagon contains a number: the integers from 1 to 24. The hexagon numbered 1 is coloured purple, the colour used for physics questions on the platform.

Every day of December, in the lead-up to the Christmas holidays, we will be posting a seasonal question from our platform.

The questions will be linked to from: isaacscience.org/pages/202512...
#ChatPhysics #iTeachPhysics #SciTeachUK #EduSky🎄

A painting of a house by one of Charles Darwin's children. We see a simple outline of a house with a pitched roof, two chimneys and some lead-paned windows. We see the kitchen fire, with a clock on a mantle, and some cast iron pots on a window sill. In a window at the stop of the house we see a cat, or possibly a squirrel!

A hand-written page of Charles Darwin's original manuscript for the Origin of Species. There are many ink blots and crossings out, and some foxing consistent with its age.

#OnThisDay in 1859, Charles Darwin's On the Origin of Species was first published.

Much of the original manuscript was used as scrap paper by Darwin's children. On the back of this painting of a house is an original manuscript page from Origin!

#CambridgeUniversityLibrary (DAR 185)

This talk was in the Ray Dolby Centre (the new Cavendish lab) and doing chemistry demos in a new physics building is always a bit more complicated without dedicated prep rooms, technicians, etc😀

(I will be doing some IA lectures in the BMS LT from 2027, so plenty of time to prep fun demos!)

And finally a guncotton Guy Fawkes effigy. #RealTimeChem

Burning a guncotton bird. #RealTimeChem

Happy bonfire night!

Enjoyed giving a quick talk about the science of fireworks at the Ray Dolby Centre tonight. Since I couldn't do the live demos there, they were pre-recorded in the morning, so here they (see comments) are for everyone's benefit!

#ITeachChem #RealTimeChem #EduSky #ChatChemistry

Teachers! View our Competitions Calendar and sign up here: ukmt.org.uk/competitions

#MathsToday #UKMT #MathsCompetitions

Applicant webinars 2025 St Catharine's College is collaborating with Brasenose College (University of Oxford) to deliver a series of free webinars in 2025 for students thinking of applying to the Universities of Oxford or Cambridge in 2026. Outreach staff will be delivering sessions with Oxbridge academics and students to:

We're hoping to avoid any interview horror stories this Halloween 👻 We've teamed up with @brasenoseoxford.bsky.social to host 11 online interview workshops 3–17 November for anyone applying to @cam.ac.uk or @ox.ac.uk for undergraduate courses. Find out more & sign up:

In #MathsToday, welcome to Bluesky, @ukmathstrust.bsky.social

Looking forward to seeing some of you at the upcoming TMC development weekend 😃

I'll miss my official "Welcome to bye-fellowship at Catz" dinner this evening as I'll be in London watching Operation Mincemeat, but I've managed to pop in for lunch and a cuppa at least!

Published on Mole Day, nice, ha!

Are you a UK state school Year 12 student studying A level Maths, with either Further Maths, Biology, Physics, Chemistry or Computer Science (or equivalent)? ⚛️ Our STEM SMART programme by @cambridgep... TikTok video by Cambridge University

Applications for the STEM SMART programme are open for Year 12 (or equivalent) state school students until the 31 October 2025.

Watch our video: www.tiktok.com/@cambridgeun...

Read more and apply: www.undergraduate.study.cam.ac.uk/stem-smart

#EduSky #SciSky

Please enjoy today, 25/9/2025, the last square date until 2116 (5^2/3^2/45^2).

Selfie of me in front of display featuring various old laboratory equipment.

Celebrating Faraday's birthday at his lab ⚗️ #RealTimeChem #ChemSky #SciSky

The Home Office claiming there is no evidence that one moved to the UK with one's parents, as a child, hits rather close to home...

(Lest a team turn up at my door, I did, after many stressful months, get the decision to deny me permanent residence overturned and indeed am now a British citizen.)

It's been another successful STEM SMART residential this year, hosted in our new RDC building this time. Thanks to everyone who supported the event: the students really appreciated it!

Some great murals!

Very relieved!

Just checked, and over the last couple of months I appear to have received at least 10 messages from HMRC (via various means) suggesting I fill in my 24/25 tax return early but not a single reminder to pay today...

Six transactions ranging from .02 to 15.44 pounds all dated 31 Jan 2025 and labelled as repayment supplement, brackets interest.

I think they do pay interest when you pay them early. And then it shows up as lots of random-seeming small amounts of money (one of these is 2p!) on the paperwork. I've given up understanding the details, to be honest...!

White text on green background saying "payment complete"

Sorted now, phew.

Absolute life saver, I completely forgot! Glad I checked Bluesky 😅

And the money! 😂

The fun thing is that one of the suggestions is also a chemistry word (katión means cation!).

Can confirm this is correct Slovak.

Identifying compounds by looking at them under a light microscope is a great on-screen chemistry skill 👌

But then we also slightly carelessly talk about energy measured in wavenumbers in chemistry, and in those contexts I would happily call all of those conversions unit conversions.

They're all listed as "conversion factors" in our undergrad data book. teaching.ch.cam.ac.uk/files/DataBo...