Podcasts about heike kamerlingh onnes

Video version of this episode: https://youtu.be/cAMSoAUo288 UC San Diego Physics Professor Jorge Hirsch... ...joins Professor Brian Keating to discuss recent claimed a breakthrough in high-temperature superconductors, including claims they work at near ambient pressure and temperature. Here come cheap magnetic levitating trains, low-loss power distribution, free MRI scanners in every clinic…. Or not? Watch my solo episode about the controversial claims here:  https://youtu.be/hbER0AnwXD4 Since the discovery of superconductors in 1911 by Heike Kamerlingh Onnes, earning the 1913 Nobel Prize in Physics, they have been the subject of much fascination and inquiry. Some of the greatest minds in physics have grappled with how superconductivity works to drive electrical resistance to 0. The 1972 Nobel prize in Physics was awarded to John Bardeen, Leon Neil Cooper, and John Robert Schrieffer "for their BCS theory of superconductivity. Now the race is on to get the highest temperature superconductor possible; another Nobel Prize was awarded just for getting the temperature up to 35K or -396 Fahrenheit! Superconducting has remained impractical, until now... Maybe! The HUGE claim: zero resistance, at temperatures up to 65 degrees Fahrenheit. Is it a scientific breakthrough, or is it very probably fraud? The Nature Paper: https://www.nature.com/articles/s41586-023-05742-0 Key Concepts: Superconductors are materials that conduct electricity without resistance. Room-temperature superconductors would have a wide range of potential applications, including in power transmission, medical imaging, and quantum computing. The researchers at the University of Rochester claim to have discovered a room-temperature superconductor. However, there are some concerns about the validity of the research. It is too early to say whether the discovery is a breakthrough or a fraud. Subscribe to the Jordan Harbinger Show for amazing content from Apple's best podcast of 2018! https://www.jordanharbinger.com/podcasts  Please leave a rating and review: On Apple devices, click here, https://apple.co/39UaHlB On Spotify it's here: https://spoti.fi/3vpfXok On Audible it's here https://tinyurl.com/wtpvej9v  Find other ways to rate here: https://briankeating.com/podcast Support the podcast on Patreon https://www.patreon.com/drbriankeating  or become a Member on YouTube- https://www.youtube.com/channel/UCmXH_moPhfkqCk6S3b9RWuw/join To advertise with us, contact advertising@airwavemedia.com Learn more about your ad choices. Visit megaphone.fm/adchoices

Please support the podcast by taking our short listener survey: https://www.surveymonkey.com/r/intotheimpossible Watch the video of this episode here: https://youtu.be/hbER0AnwXD4?subconfirmation=1 Here come maglev trains, fusion reactors, cheap MRI scanners in every clinic…. Or not? Since the discovery of superconductors in 1911 by Heike Kamerlingh Onnes, earning the 1913 Nobel Prize in Physics, they have been the subject of much fascination and inquiry. Some of the greatest minds in physics have grappled with how superconductivity works to drive electrical resistance to 0. The 1972 Nobel prize in Physics was awarded to John Bardeen, Leon Neil Cooper, and John Robert Schrieffer "for their BCS theory of superconductivity. Now the race is on to get the highest temperature superconductor possible; another Nobel Prize was awarded just for getting the temperature up to 35K or -396 Fahrenheit! So superconducting has remained impractical, until now... Maybe! The HUGE claim: zero resistance, at temperatures up to 65 degrees Fahrenheit. Is it a scientific breakthrough, or is it very probably fraud? 00:00:00 Intro 00:01:11 Eisenhower's warning https://youtu.be/mHDgsh6WPyc?t=562 00:01:55 Jorge Hersch and High Tc Superconductors 00:04:32 Conflict between Hersch and Diaz 00:06:25 What is a superconductor? 00:20:45 Cooper Pairs and Quantum Effects 00:25:00 100 years of superconducting materials 00:28:13 The experiment and the diamond anvil! 00:33:31 The Unearthly Materials Controversy 00:40:00 Academic Freedom and Moderation 00:43:26 Conclusions and Takeaways Sources https://www.nature.com/articles/s41586-023-05742-0 https://www.nature.com/articles/s41586-022-05294-9 https://www.unearthlymaterials.com/ https://techcrunch.com/2023/03/17/unearthly-materials-superconductors-investors/?guccounter=1&guce_referrer=aHR0cHM6Ly93d3cuZ29vZ2xlLmNvbS8&guce_referrer_sig=AQAAALsG2YvRnsu4H0m6ds6fJexDuCNHetasRbCFcu_DbioYuWHi0WKx7idn5wM3Uz2Ko12Zc-4U6SuufQHLbq-QbdfCqzDwEhObBA4bw9BB_rVisKKZTufyfmbPBi_4Oe1kOnBGVIdFjlK9SAOc0yAGRPAPfN1LIdvZ5bdTutI9wP5b https://undark.org/2023/03/27/a-potential-triumph-in-physics-dogged-by-accusation-and-doubt/ Subscribe to the Jordan Harbinger Show for amazing content from Apple's best podcast of 2018! https://www.jordanharbinger.com/podcasts  Please leave a rating and review: On Apple devices, click here, https://apple.co/39UaHlB On Spotify it's here: https://spoti.fi/3vpfXok On Audible it's here https://tinyurl.com/wtpvej9v  Find other ways to rate here: https://briankeating.com/podcast Support the podcast on Patreon https://www.patreon.com/drbriankeating  or become a Member on YouTube- https://www.youtube.com/channel/UCmXH_moPhfkqCk6S3b9RWuw/join To advertise with us, contact advertising@airwavemedia.com Learn more about your ad choices. Visit megaphone.fm/adchoices

Melvyn Bragg and guests discuss the discovery made in 1911 by the Dutch physicist Heike Kamerlingh Onnes (1853-1926). He came to call it Superconductivity and it is a set of physical properties that nobody predicted and that none, since, have fully explained. When he lowered the temperature of mercury close to absolute zero and ran an electrical current through it, Kamerlingh Onnes found not that it had low resistance but that it had no resistance. Later, in addition, it was noticed that a superconductor expels its magnetic field. In the century or more that has followed, superconductors have already been used to make MRI scanners and to speed particles through the Large Hadron Collider and they may perhaps bring nuclear fusion a little closer (a step that could be world changing). The image above is from a photograph taken by Stephen Blundell of a piece of superconductor levitating above a magnet. With Nigel Hussey Professor of Experimental Condensed Matter Physics at the University of Bristol and Radbout University Suchitra Sebastian Professor of Physics at the Cavendish Laboratory at the University of Cambridge And Stephen Blundell Professor of Physics at the University of Oxford and Fellow of Mansfield College Producer: Simon Tillotson

Melvyn Bragg and guests discuss the discovery made in 1911 by the Dutch physicist Heike Kamerlingh Onnes (1853-1926). He came to call it Superconductivity and it is a set of physical properties that nobody predicted and that none, since, have fully explained. When he lowered the temperature of mercury close to absolute zero and ran an electrical current through it, Kamerlingh Onnes found not that it had low resistance but that it had no resistance. Later, in addition, it was noticed that a superconductor expels its magnetic field. In the century or more that has followed, superconductors have already been used to make MRI scanners and to speed particles through the Large Hadron Collider and they may perhaps bring nuclear fusion a little closer (a step that could be world changing). The image above is from a photograph taken by Stephen Blundell of a piece of superconductor levitating above a magnet. With Nigel Hussey Professor of Experimental Condensed Matter Physics at the University of Bristol and Radbout University Suchitra Sebastian Professor of Physics at the Cavendish Laboratory at the University of Cambridge And Stephen Blundell Professor of Physics at the University of Oxford and Fellow of Mansfield College Producer: Simon Tillotson

Subscribe to the podcast!  https://podfollow.com/everythingeverywhere/ In 1911, a Dutch physicist named Heike Kamerlingh Onnes was experimenting with ultra low-temperature metals. He was measuring the electrical resistance of mercury to find out what would happen  What he found was shocking and totally upended everything we know about physics and electricity. Learn more about superconductivity, how it works, and its applications, on this episode of Everything Everywhere Daily. https://Everything-Everywhere.com/MasterClass -------------------------------- Associate Producers: Peter Bennett & Thor Thomsen   Become a supporter on Patreon: https://www.patreon.com/everythingeverywhere   Discord Server: https://discord.gg/UkRUJFh   Instagram: https://www.instagram.com/everythingeverywhere/ Twitter: https://twitter.com/everywheretrip Reddit: https://www.reddit.com/r/EEDailyPodcast/ Website: https://everything-everywhere.com/everything-everywhere-daily-podcast/

Non tutti i supereroi indossano una divisa, ma alcuni indossano indumenti molto coprenti: sono coloro che cercano di raggiungere temperature sempre più basse per scoprire proprietà della materia che in condizioni normali non vedremmo. Tra i pionieri della corsa al freddo va attribuita una menzione d’onore a Heike Kamerlingh Onnes, fisico olandese che per primo, nel 1908, riuscì a ottenere l’elio liquido, concludendo una gara che era cominciata un secolo prima e aveva reclamato la salute di molti. Per aver raggiunto questo obiettivo, e in generale per il suo lavoro sulla fisica del freddo, Onnes fu premiato col Nobel per la fisica nel 1913. Molti Nobel nella storia sono stati attribuiti grazie a una scoperta fortuita, o a un particolare colpo di genio; non è questo il caso. L’obiettivo di Kamerlingh Onnes fu raggiunto a Leida con un lavoro lungo, faticoso sistematico e tramite uno dei primi progetti di ricerca collaborativa su ampia scala, simile ai moderni progetti di ricerca, in cui un team di studiosi, assistenti e tecnici viene formato specificamente per operare su determinati macchinari. Il grande lavoro di progettazione, costruzione e comunicazione guidato da Kamerlingh Onnes conferì a Leida il monopolio delle basse temperature per decenni. Totalmente inaspettata fu invece la scoperta di un altro fenomeno legato alle basse temperature scoperto incidentalmente da Kamerlingh Onnes nel 1911: la resistività elettrica nel mercurio crollava istantaneamente al di sotto di una certa temperatura. A questo fenomeno, totalmente imprevisto per i fisici dell’epoca, fu dato il nome di superconduttività; nessuno dei contemporanei di Kamerlingh Onnes lo seppe inquadrare in una teoria coerente, e una spiegazione soddisfacente, basata sulla fisica quantistica, fu data soltanto molti decenni dopo. Oggi le applicazioni della superconduttività sono irrinunciabili dal punto di vista, tra le altre cose, della tecnologia medica e della ricerca in fisica, in quanto sono gli unici in grado di produrre e sostenere grandi correnti e grandi campi magnetici necessari per gli acceleratori di particelle e la risonanza magnetica. Sono stati anche scoperti superconduttori ad “alte temperature” (dove “alto” è un termine relativo, s’intende), che però pongono sfide tecnologiche non indifferenti. Forse Kamerlingh Onnes non sarà uno scienziato da magliette e citazioni, ma senz’altro la fisica studiata nel suo laboratorio ha tracciato alcune vie fondamentali della ricerca moderna.   Fonti Gino Segrè, A qualcuno piace freddo: Temperatura, vita, materia (2005), traduzione di Tullio Cannillo, ed. Bollati Boringhieri Stephen Blundell, Superconduttività (2012), traduzione di Roberto di Capua, edizioni Codice Jesus Navarro Faus, Landau: la superconduttività – la fisica che venne dal freddo (2016), traduzione di Roberta Polcan, edizioni RBA Italia Dirk Van Delft, Freezing Physics: Heike Kamerlingh Onnes and the quest for cold (2007), traduzione di Beverly Jackson, Edita – the Publishing House of the Royal Netherlands Academy of Arts and Sciences R. de Bruyn Oubuter, Heike Kamerlingh Onnes’ Discovery of Superconductivity, Scientific America. vol. 276, p. 96 (1997)  Arno Laesecke, Through Measurement to Knowledge: The Inaugural Lecture of Heike Kamerlingh Onnes (1882), Journal of Research of the National Institute of Standards and Technology vol. 107, N. 3, pp 261–277 (2002) Dizionario biografico dei Paesi Bassi: 1880-2000 (http://resources.huygens.knaw.nl/bwn1880-2000/lemmata/bwn2/kamerlingh) https://ethw.org/Milestones:Discovery_of_Superconductivity,_1911 F.A.F.C. Went, Levensbericht H. Kamerlingh Onnes, in: Verslagen Natuurkunde, 35, Amsterdam, 1926, pp. 206-210 Communications from the Kamerlingh Onnes Laboratory  

En 1911 Heike Kamerlingh Onnes descubrió que el mercurio podía conducir la electricidad sin resistencia a temperaturas cercanas a cero absoluto. Este fenómeno, que hoy conocemos como superconductividad, permitió soñar con la posibilidad de transportar energía sin pérdidas a largas distancias, dispositivos de almacenamiento de energía, bobinas superconductoras capaces de crear enormes campos magnéticos, vehículos de levitación magnética, etc. Actualmente se sigue investigando para que aquellos sueños sean una realidad cotidiana. Nuestra invitada, Teresa Puig, investigadora del Instituto de Ciencia de Materiales de Barcelona (ICMAB) del CSIC dirige un grupo en el que se investiga la fabricación de cintas superconductoras de alta temperatura de bajo costo, alto rendimiento y altas prestaciones para el nuevo reto energético. Para lograr este objetivo, el grupo de Teresa Puig ha recibido una ayuda Proof of Concept del Consejo Europeo de Investigación.

Dirk van Delft werd geboren in 1951 als zoon van een bloemenkweker. Hij groeide op in het gereformeerde Rijnsburg. Na een studie natuurkunde en een paar jaar psychologie werd hij docent en decaan aan het College Leeuwenhorst in Noordwijkerhout. Van Delft verruilde in de jaren tachtig het lesgeven voor de journalistiek, eerst bij studentenweekblad Propria Cures, later bij NRC. Bij NRC stond hij als chef wetenschappen onder meer aan de wieg van de dagelijkse wetenschapspagina. Als ?journalist in residence? werkte Van Delft in 2002 op onderzoeksinstituut NIAS aan een biografie over wetenschapper Heike Kamerlingh Onnes, die in 1913 de Nobelprijs voor de Natuurkunde kreeg. Hij promoveerde met deze studie aan de Universiteit Leiden. De biografie belandde zelfs op de longlist van de AKO-literatuurprijs. Van Delft won in 2005 de Eurekaprijs voor wetenschapscommunicatie. Een jaar later werd hij directeur van Rijksmuseum Boerhaave. Sinds 2008 is hij eveneens bijzonder hoogleraar Materieel erfgoed van de natuurwetenschappen aan de Universiteit Leiden. Hij begeleidt promovendi, organiseert congressen, symposia en bijzondere activiteiten, zoals Einstein-fietstochten, en geeft jaarlijks tientallen lezingen. Dirk van Delft is getrouwd met turkologe Petra de Bruijn. Met haar heeft hij twee kinderen: Iris (26) en Felix (19). Uit een eerder huwelijk heeft hij een zoon: Alex (33).

Dirk van Delft werd geboren in 1951 als zoon van een bloemenkweker. Hij groeide op in het gereformeerde Rijnsburg. Na een studie natuurkunde en een paar jaar psychologie werd hij docent en decaan aan het College Leeuwenhorst in Noordwijkerhout. Van Delft verruilde in de jaren tachtig het lesgeven voor de journalistiek, eerst bij studentenweekblad Propria Cures, later bij NRC. Bij NRC stond hij als chef wetenschappen onder meer aan de wieg van de dagelijkse wetenschapspagina. Als ?journalist in residence? werkte Van Delft in 2002 op onderzoeksinstituut NIAS aan een biografie over wetenschapper Heike Kamerlingh Onnes, die in 1913 de Nobelprijs voor de Natuurkunde kreeg. Hij promoveerde met deze studie aan de Universiteit Leiden. De biografie belandde zelfs op de longlist van de AKO-literatuurprijs. Van Delft won in 2005 de Eurekaprijs voor wetenschapscommunicatie. Een jaar later werd hij directeur van Rijksmuseum Boerhaave. Sinds 2008 is hij eveneens bijzonder hoogleraar Materieel erfgoed van de natuurwetenschappen aan de Universiteit Leiden. Hij begeleidt promovendi, organiseert congressen, symposia en bijzondere activiteiten, zoals Einstein-fietstochten, en geeft jaarlijks tientallen lezingen. Dirk van Delft is getrouwd met turkologe Petra de Bruijn. Met haar heeft hij twee kinderen: Iris (26) en Felix (19). Uit een eerder huwelijk heeft hij een zoon: Alex (33).

Wat doet kou met je als er geen ontkomen meer aan is? In deze aflevering hoor je twee bergbeklimmers uit de Leidse regio die extreme kou trotseren op de Mount Everest. Verder: De Leidse wetenschapper Heike Kamerlingh Onnes maakte in 1908 Leiden tot het koudste plekje op aarde. Je hoort een reconstructie. Word onze Patreon vanaf 1 euro per maand! Meer info: http://makersradio.nl/Support the show (https://www.patreon.com/MakersRadio)