Blue sky in warm champagne
By Laurence Coustal
Popping a bottle of champagne that has been stored at 20 degrees Celsius (something one really ought never do) ejects a fleeting "mini-cloud" colder than ice and blue as the sky, awestruck scientists said Thursday.
Their research, using a super-high-speed camera, revealed a phenomenon never before seen, the team reported in the journal Scientific Reports.
When opening bottles at 20 C, "we observed a bluish cloud that was totally unexpected," said study co-author Gerard Liger-Belair, a professor at the University of Reims in France's Champagne region, where he studies bubbles and foam.
Bottles chilled to six or 12 degrees Celsius (42.8-53.6 degrees Fahrenheit) –release a grey-white fog when opened, a better-known phenomenon that occurs when gas gushing from the bottleneck expands as it escapes from the higher pressure inside.
When this – a process known as adiabatic expansion – happens, the temperature of the gas plummets and condensates to form the whitish fog familiar to those who enjoy clinking the occasional flute.
The recommended drinking temperature for bubbly is 8-10 C.
At 20 C, the study authors found, something strange happens. There is no white cloud, but rather a fleeting blue plume which starts inside the bottleneck.
The team used cameras that can take up to 12,000 pictures per second to observe the first thousandths of seconds after a cork is removed.
"Bottles at 20 C were under such a pressure (in the order of eight bar) that the adiabatic expansion allowed the temperature of the escaping gas to plummet to a glacial temperature of minus 90 C (minus 130 Fahrenheit)," Liger-Belair told AFP.
Like the sky
This is colder than the freezing point for carbon dioxide. The ambient pressure at sea level is about one bar.
"The bluish cloud forms when the CO2 transforms into miniature particles of dry ice which reflect the ambient light," explained the researcher.
"This blue cloud has the same physical origin as the blue colour of the sky. Is that not extraordinary?"
The blue fog is not visible to the naked eye as it lasts only about two or three thousandths of a second.
Earth's sky is blue because tiny molecules in the air scatter blue light, which has a shorter wavelength and higher frequency, more strongly than other colours.
The finding has no implications for the way in which we make or consume bubbly, said Liger-Belair.
"It is simply a beautiful physics experiment done with a familiar product. Who would have thought that in a few milliseconds, we would find such extreme conditions during the opening of a bottle of champagne?"
© Agence France-Presse
- Death of Jacintha Peiris
- Renovation work on golden canopy begins
- Poverty down to 4.1% But highest in the North
- MR to preside at SLPP rallies
- Prelates decrying new Constitution Govt to blame says Mano
- New office to assist Uma Oya affected
- Importance of Tourism stressed Dengue threat lgnored
- Indian soldier revisits a brutal battlefield
- Large crowd at Berlin Katina Pooja
- PC polls campaigns Nimal, John lead SLFP team
- ‘Savisthri’ report handed over to Sampanthan
- Nimal warns Railway unions Strict action against strikers
- Attack on Rohingya refugee shelter Police trap monk in Nittambuwa
- Call to extend PCoI term VAC wants to unmask 20 UNPers
- K’Nochchi poorest, at Rs 28,483 Household expenses increase to Rs 62,237 pm Rich spend Rs 158,072 pm per household
- Don’t be misled on new Constitution – President
- PM presents economic policy to Parliament Govt targets private sector involvement
- One Final Offer From the EU to the UK
- Anti-Dumping Bill Gazetted Protection for Local Industries
- Tourism Statistics SLTDA disputes CCC
- Smugglers detained at BIA
- SI injured during hooch raid Falls from third floor balcony
- 1070 traffic fatalities in 2017 121 murders during same period - Police
- Rattota Police OIC suspended
- Technical error in Diversity Visa Programme DV-2019 US Embassy says re-register
- Sri Lanka crumble again, 173 All Out
- De Villiers, Hasan Ali move to top of ODI rankings
- Resurgent Zimbabwe face rising West Indies
- ‘Singer Cup’ U-19 Cricket Hasintha gets ton
- SLCA shows concern for players’ safety
- WI keep SL to 69 to take 1-0 lead
- Trinitians roar to regain Lanka Lions Rugby Sevens title Dilshan Kelaniyangoda named Player of the Tournament
- Hafeez reported for suspect bowling action
- MAS win swimming crown for seventh year
- Kiwis out to tame India's newest spin duo
- Root must 'con' players into Ashes mindset - Vaughan
- Improved Wallabies ready for All Blacks tilt - Hooper
- Waidyathilake quits from ITO officiating
- Troubled Chelsea fight to boost flagging morale
- Pogba on comeback trail for injury-hit Man Utd
- Neymar, Mbappe primed for PSG-Marseille rivalry
- Sadeera’s inclusion will strengthen batting Sri Lanka face uphill task
- Anika into semis in Singapore
- ‘Singer Cup’ U-19 Schools Cricket 15-year-old Pawan scores century
- Sheoran takes Sri Lanka Golf title in thriller
- This simple investment strategy could protect you if the US stock market cracks
- Google’s parent company leads $1 billion investment in Lyft
- Nissan halts production in Japan
- These airline stocks have doubled while rivals go bust
- China's answer to Groupon and Yelp is now worth $30B
- Goldman Sachs Chief Lloyd Blankfein hints at Frankfurt move
- Amazon: More than 100 cities bid for new headquarters
- End of Australia auto-making sector as Holden closes doors
- May pleads for Brexit deal she can sell at home
- Black Monday 1987: ‘Our jaws hit the desk’
- Sustainability a priority for Port City Project
- National Chamber hosts Iranian Ambassador
- Fair demand for Ceylon Tea from Japan, China
- China third quarter growth meets expectations at 6.8%
- The rise of consumerism Thorstein Veblen’s conspicuous consumption now a global phenomenon
- HNB announces seasonal discounts
- Janashakthi takes home Gold at Effie Awards
- Standard Chartered running seasonal promo
- Dialog launches first TIER III Certified Data Centre in Sri Lanka
- CSE to add dollar-denominated board
- Concentrated wisdom Learning from others
- lateral thinking Nation’s guardians celebrate 68th Anniversary
- A Time of Gifts Starting to wind down
- The month of ‘Katina Pinkama’
- OVERWHELMING RESPONSE HUMANITY AT ITS BEST
- Fall of Raqqa
- UN urges B’desh to move Rohingya refugees
- Flu shots are the greatest medical fraud in the history of the world
- Sucking it up
- Ahikuntika community of Sri Lanka Diminishing cultural traits
- No Revenge I want to embrace all those who left us – Basil Rajapaksa
- Large Industrial Zone for Thulhiriya
- Even the PM should be in Prison for the frauds
- Would like more Pradeshiya Sabhas for N’Eliya-Radhakrishnan
- Skills mismatch a massive economic cost Education system must be reformed
- UNHRC Resolution 30/1 Implications for Sri Lanka (Part II) (Based on a presentation to the OPA)
- Electoral Reforms are for People’s Benefit
- Managing perception with international community
- Salient points of horoscope Assessment
- KARMIC CONNECTIONS IN THE BIRTH CHARTS 2
- Dream of travelling abroad?
- Mystery behind Osama bin Laden explained
- Three poses to relieve trauma
- Socio-economic developments from critical perspective
- KAZUO ISHIGURO – THE NEW NOBEL LAUREATE
- The Fairway Galle Literary Festival 2018 –Internationally acclaimed authors to take part
- Portrayal of country and nature
- Resonant Field Imaging - a Marvel in Technology
- Shankar’s International Children’s Competition 2018
- Hindustani Violin recital
- Classical rendering of a masterly-crafted musical
- Kite Surfing Lanka Kalpitiya An experience of a lifetime
- Ella and mini Adam’s Peak
- A cave of history -Ravana Cave
- Making plus-sized clothing trendy
- Pyjamas go viral as well - Sharmila Srikumar
- Giving back to Society
- Double treat at Pinnawala
- Mental illness a health issue Replacing stigma with compassion
- Studying to be ahead