Lightnews — Scholar-powered news

Andres Tretiakov @andrestrujado.bsky.social · 7d

Strange behaviour of hydrogel spheres on a hot sheet of metal #Leidenfrosteffect #resonance

Andres Tretiakov @andrestrujado.bsky.social · 8d

Amazingly, Dy3+ doped glass fluoresces yellow under UV light. Xmas tree from 2020 with baubles made of doped Eu3+, Dy3+ & Tb3+

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Andres Tretiakov @andrestrujado.bsky.social · 8d

Dysprosium video:
youtu.be/8TE3iRXVcmY?...

Dysprosium (new) - Periodic Table of Videos

YouTube video by Periodic Videos

youtu.be

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Andres Tretiakov @andrestrujado.bsky.social · 16d

Electrostatic levitation #physicsdemos 👻 #techognition #techsrule

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Andres Tretiakov @andrestrujado.bsky.social · 20d

Radio sound signal modulated via an LED & converted back into sound using a simple solar cell made of two 2p coins submerged in an electrolyte solution & connected to a speaker/amplifier. #physicschemdemos #techognition
youtu.be/YdYFrpJHW7I?...

Transmitting sound via a blinking LED using two 2p coins solar cell

YouTube video by andycapo123

youtu.be

Andres Tretiakov @andrestrujado.bsky.social · 29d

Glowing gases! #neonsigns #plasma #highvoltage #excitation #inertgases youtu.be/qAgaPBMNFr8?...

Glowing gases

YouTube video by andycapo123

youtu.be

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Andres Tretiakov @andrestrujado.bsky.social · Sep 4

Another magnificent video from the Master chemist Andrew Szydlo! #Acetylenechemistry
youtu.be/FqtXDiRcohg?...

Acetylene Demonstration

YouTube video by Szydlo's Chemistry

youtu.be

Andres Tretiakov @andrestrujado.bsky.social · Sep 3

Sunlight refracting & reflecting through rain drops ☔🌧️🌈 #Doublerainbow

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Andres Tretiakov @andrestrujado.bsky.social · Aug 29

A few lenticular Schrödinger's cat cards from @optica.org to helps us for our #QuantumPhysics open day next Sat. 6th September! 🐱

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Reposted by Andres Tretiakov

Dan Jagger @auditorynerves.bsky.social · Aug 27

Aotearoa New Zealand launches campaign to find love for Ned, a rare & lonely left-spiralling snail.

Nearly all common garden snails have shells that coil to the right, but Ned’s shell results in reversed reproductive organs – a barrier to mating.

🧪🐌❤️

www.theguardian.com/world/2025/a...

New Zealand launches campaign to find love for rare and lonely left-spiralling snail Ned

Nearly all common garden snails have shells that coil to the right but Ned the snail’s left-spiralling shell results in reversed reproductive organs – a barrier to mating

www.theguardian.com

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Reposted by Andres Tretiakov

John O’Donoghue @drjohnodonoghue.bsky.social · Aug 21

This time last week we had a great time in @rsc.org Burlington House #London for my book launch. Thanks to everyone who joined us, especially @andrestrujado.bsky.social for this absolutely fantastic silver mirror coke bottle! Onscreen Chemistry is available now in bookstores #BookLaunch #ChemSky

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Andres Tretiakov @andrestrujado.bsky.social · Aug 21

👍

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Andres Tretiakov @andrestrujado.bsky.social · Aug 21

New video: Tesla's Egg of Columbus aka PhiTOP
youtube.com/shorts/-5dQg...

A nice little magnetic induction demo using aluminium rod & Tesla's Egg of Columbus #physicsdemos

YouTube video by andycapo123

youtube.com

Andres Tretiakov @andrestrujado.bsky.social · Aug 15

Can I lift a trolley using just two fingers? Of course I can 😊 #physicsbaby Made new atmospheric pressure mats demos. #sciencetechsRULE

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Andres Tretiakov @andrestrujado.bsky.social · Aug 14

Finally, got to see
@drjohnodonoghue.bsky.social's talk in person @rsc.org His book Onscreen Chemistry: The Portrayal of Chemical Science in Film and TV is superb! Filled with so many nuggets of information I did not know. Bravissimo! Book signed 👍