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☕🧠 Breaking News: Coffee stains are darker at the edges because... wait for it... they spread out and dry! Who knew, right? 🙄 So next time you spill your overpriced latte, remember: it's not just a mess, it's science in action! 🔍👏
https://www.why.is/svar.php?id=5513 #CoffeeScience #CoffeeStains #LatteLife #FunFacts #ScienceInAction #HackerNews #ngated

Why are coffee stains darker at the edges?

https://www.why.is/svar.php?id=5513

#HackerNews #coffeeStains #darkerEdges #coffeeScience #stainingPhenomenon #curiosityExplained #scienceOfCoffee

It's World Book Day, and what better way to celebrate than with a new blog post that dives into the fascinating science of coffee? ☕️🔬 From the Maillard reaction to the perfect extraction, I've explored the journey from bean to cup.

📢Read more in my latest blog post📢: https://zhach.news/the-alchemy-of-the-bean/

Let's discuss: What's your go-to brewing method and why? Share your thoughts in the comments! #CoffeeScience #CoffeeRoasting #CoffeeBrewing #WorldBookDay #ScienceOfCoffee #BlogPost

Brewing Perfection: Inside the World of At-Home Espresso Machines

Eliza and Alan dive into a captivating Hackernews thread exploring the intricate journey towards the perfect at-home espresso shot. Discover the nuances of machine upgrades, DIY hacks, and the community's passion for balancing taste with precise chemistry. From high-end machines to creative solutions, explore how espresso enthusiasts find their brew bliss. #EspressoJourney #HomeBarista #CoffeeScience

https://youtu.be/aJ-4NgbrqtU

A #coffee in a new cafe provided plenty of #coffeephysics - from the white mists (barely visible in photo) to the condensation around the #V60 jug... the physics here goes from levitation to the greenhouse effect.

#coffeescience

A glass jug of freshly brewed V60 coffee next to an empty cup on a wooden tray. To the left of the coffee is a piece of paper detailing the origin of the coffee: Peru, Cajamarca, Red Bourbon, washed, 1900m above sea level, Medium light, Stone fruit, honey, oolong

Detail of the coffee in the glass jug. You can, I think, see a bit of white mist on the surface of the coffee. You will probably find it easier to see on your own cup of steaming hot coffee or tea

Detail from the inside of the coffee jug showing droplets of water on the inside of the jug with the coffee at the bottom. The condensation around the inside of the coffee comes from the evaporating liquid. But, there is also a link between the physics of this and the greenhouse effect. So much to see in a cup of coffee.

What is the connection between nuclear science and coffee ☕️? Watch the video:

https://buff.ly/4eUWC2W

#CoffeeScience #SustainableCoffee #FutureofCoffee

Even more reason to take time to enjoy your #coffee if there is a (low pressure) storm overhead.....

Various coffee-brew guides suggest an optimal brew temperature of between approx 90-96C - so the fact that this storm caused the boiling temperature of water to dip to 98C would be a positive benefit:

https://www.theguardian.com/world/article/2024/jul/16/storm-ciaran-saw-boiling-point-of-water-drop-below-100c-study-finds

#coffeescience #teascience #kitchentopexperiments #coffeephysics

I have sometimes wondered how good these one-way air valves were on bags of freshly #Roasted #Coffee

I packed this #PapaPalheta bag of #CoffeeBeans in the hold of a long-haul flight back from #Singapore and found a clue to the answer.... the low pressure caused the air to escape the bag but then, when the bag was returned into normal atmospheric pressure, the one-way valve did not appear to let the air back in.

Surprisingly effective!
#CoffeeScience #CoffeePhysics

A bag of Papa Palheta coffee for filter from the Hartmann estate. The bag is compressed and looks as if the coffee inside has been vacuum packed.

Six holes in a circle on the back of a bag of coffee indicate the one-way valve in the coffee bag. This is clearly the back of the 'vacuum packed' coffee seen in the other photo.

Two Papa Palheta (PPP) Coffee bags on a table. They look like normal air-filled coffee bags. On the left is Suke Quto. On the right is the Hartmann estate bag seen later.

A mistake meant that the water in the tea-pot was cold (!! 😮 - poorly brewed tea!) - but when the mistake was rectified & hot #tea was eventually poured into the cool cup, the convection in the liquid resulted in a good display of the light refracted around different portions of the internally moving fluid.

#TeaPhysics #physics #CoffeeScience

A flowery tea cup with a gold rim on a blue and white china saucer. Both are on a white table with a white teapot in the background. The tea cup does not contain any tea.

Looking down into a tea cup. A strong light is reflected at about 8 o'clock on the surface. Lines of light on the bottom of the cup indicate convection zones.

It has been a while! Have you seen any #CoffeeScience in your #Coffee cup? How about some #physics in a cafe?

I've been trying to get to a particular cafe for over a week for a #CafePhysics review, but things (life!) keep getting in the way.

What about you? Have you seen anything that made you think last weekend?

Inside the cafe we enjoyed two types of coffee. An iced coffee complete with floating ice cream and an oat milk flat white. I couldn’t resist appreciating the latte art by drinking the #coffee along the axis!

There’s diffusion, density and bubble #physics here, but perhaps you notice something else, more #science hidden in the coffee?

#coffeephysics #coffeescience #LatteArt #CafePhysics #Pokok #CoffeeKualaLumpur #CoffeePJ #KualaLumpur #PJ

A glass of iced coffee. The coffee has formed a layer at the top of the glass leaving a milky layer underneath. Diffusion of the coffee into the milk is occurring a the interface. A scoop of ice cream is floating on top of the coffee.

Two hearts and a couple of swirls! Latte art on a flat white in Pokok. The hearts are aligned and symmetric around a central axis. The coffee is in a green cup with the handle of the cup orientated towards the right of the photograph.

The latte art after some coffee appreciation. The hearts are now distorted and elongated along the central axis where some coffee has been drunk from the side of the cup. The handle of the cup is no longer visible in the photograph but is clearly to the right of the image.

A glasshouse cafe with two sorts of cooling system. Pokok in Kuala Lumpur, Malaysia, is air conditioned but also, if you look carefully you can see a sprinkler on the roof of the cafe - pouring water on the roof which then evaporates to help the cooling.

#noticing #cafe #coffeescience #TakingFiveMinutesToNoticeThings #physics #EverydayPhysics

The ceiling of a cafe in a glasshouse in Kuala Lumpur. An air conditioning unit inside is complimented by a 3 pronged sprinkler system on the roof of the cafe. The blue sky and green trees outside the cafe give an idea of how hot it is generally in Kuala Lumpur.

Last week, I had the opportunity to visit the Colombian Coffee Company in Southwark, London. A lovely coffee in a delicate cup, with plenty of physics to ponder too.

My attention was taken by a question - how did that take away cup get there? But what #physics would you see if you were to enjoy a #coffee here?

#CoffeePhysics #CafePhysics #CoffeeScience

A take away cup (which appears to be from Pret a Manger) is held by netting underneath a railway bridge. There is no obvious hole in the netting which is presumably to stop pigeons getting onto the rafters of the bridge. So how did the cup get there?

My first coffee on a wooden slatted table. The coffee is in a colourful porcelain cup with a saucer. A sandwich board with the Colombian flag painted on it advertises the coffee. Some vans are parked on the street and the shadow effects around the table suggest that the cafe is situated under the railway bridge.

An enjoyable flat white (oat milk) over the weekend.

I think there's a fair bit of #physics in this #coffee (and a possible #geological connection). What do you think?

#coffeescience

#coffeescience

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