BIPM

𝐅𝐨𝐫 𝐭𝐡𝐨𝐬𝐞 𝐢𝐧 𝐏𝐚𝐫𝐢𝐬, 𝐭𝐡𝐢𝐬 𝐲𝐞𝐚𝐫: A new photo exhibition entitled “150th Anniversary of the BIPM – Robert Doisneau and Raphaël Dallaporta” is opening tomorrow! --- This unique exhibition brings together two powerful photographic perspectives—Robert Doisneau, iconic chronicler of 20th-century French life, and Raphaël Dallaporta, whose lens explores the intersection of science and society. From the inner workings of the BIPM laboratories to the universal rhythm of time and temperature, their work offers an evocative look at how measurement quietly supports every aspect of modern life. --- 𝐖𝐡𝐞𝐧 𝐚𝐧𝐝 𝐖𝐡𝐞𝐫𝐞 5 April – 26 April 2025 – the Mezzanine, Hôtel de Ville, Sèvres 31 May – 27 September 2025 – Grills of the Hôtel de Ville, Sèvres --- Organised by the Ville de Sèvres in collaboration with the Bureau International des Poids et Mesures (BIPM), the exhibition forms part of the year-long celebrations marking the 150th Anniversary of the Metre Convention. --- ➡️ 𝑮𝒆𝒕 𝒕𝒉𝒆 𝒇𝒖𝒍𝒍 𝒑𝒓𝒐𝒈𝒓𝒂𝒎𝒎𝒆 𝒂𝒏𝒅 𝒅𝒆𝒕𝒂𝒊𝒍𝒔 𝒊𝒏 𝒕𝒉𝒆 𝒄𝒐𝒎𝒎𝒆𝒏𝒕𝒔 𝒃𝒆𝒍𝒐𝒘 👇 #BIPM150 #WorldMetrologyDay #MetrologyMatters

Do you know what the KCDB stands for? 𝑷𝒍𝒆𝒂𝒔𝒆 𝒍𝒆𝒂𝒗𝒆 𝒚𝒐𝒖𝒓 𝒂𝒏𝒔𝒘𝒆𝒓 𝒊𝒏 𝒕𝒉𝒆 𝒄𝒐𝒎𝒎𝒆𝒏𝒕 𝒔𝒆𝒄𝒕𝒊𝒐𝒏 𝒃𝒆𝒍𝒐𝒘👇 --- Let’s see who really knows their metrology related acronyms 😉 #BIPM150 #MetrologyChallenge

📢 𝐄𝐱𝐜𝐢𝐭𝐢𝐧𝐠 𝐍𝐞𝐰𝐬! We are pleased to announce that METAS, the National Metrology Institute of Switzerland, is providing generous support 𝐭𝐨 𝐬𝐩𝐨𝐧𝐬𝐨𝐫 𝐚 𝐥𝐢𝐦𝐢𝐭𝐞𝐝 𝐧𝐮𝐦𝐛𝐞𝐫 𝐨𝐟 𝐩𝐚𝐫𝐭𝐢𝐜𝐢𝐩𝐚𝐧𝐭𝐬 𝐟𝐨𝐫 𝐭𝐡𝐞 𝟐𝟎𝟐𝟓 𝐕𝐚𝐫𝐞𝐧𝐧𝐚 𝐒𝐮𝐦𝐦𝐞𝐫 𝐒𝐜𝐡𝐨𝐨𝐥 on #Metrology! This #sponsorship is aimed at young metrologists with strong scientific potential from Member States or Associates. Selected candidates will not only attend the Summer School, taking place from 9 to 18 July 2025 in Varenna, Italy, but will also have the unique opportunity to undertake a short placement (two to six weeks) at METAS. 𝐓𝐡𝐢𝐬 𝐢𝐬 𝐚 𝐟𝐚𝐧𝐭𝐚𝐬𝐭𝐢𝐜 𝐜𝐡𝐚𝐧𝐜𝐞 𝐟𝐨𝐫 𝐭𝐡𝐞 𝐟𝐮𝐭𝐮𝐫𝐞 𝐥𝐞𝐚𝐝𝐞𝐫𝐬 𝐨𝐟 𝐦𝐞𝐭𝐫𝐨𝐥𝐨𝐠𝐲 𝐭𝐨 𝐝𝐞𝐞𝐩𝐞𝐧 𝐭𝐡𝐞𝐢𝐫 𝐞𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 𝐚𝐧𝐝 𝐜𝐨𝐧𝐧𝐞𝐜𝐭 𝐰𝐢𝐭𝐡 𝐭𝐡𝐞 𝐠𝐥𝐨𝐛𝐚𝐥 𝐜𝐨𝐦𝐦𝐮𝐧𝐢𝐭𝐲. Interested in applying? Learn more here ➡️ https://lnkd.in/eEUN5DhZ

[BIPM – 150 ANS DE MÉTROLOGIE AU SERVICE DU MONDE, DEPUIS SÈVRES] Connaissez-vous vraiment Sèvres ? La ville regorge de trésors et pas uniquement ceux confectionnés en céramique et en porcelaine. Une autre institution, un peu secrète et discrète, méconnue du public, est installée depuis 1875 à Sèvres. En 2025, le Bureau International des Poids et Mesures (BIPM) célèbre 150 ans d’engagement scientifique… à Sèvres. Créé en 1875 et installé au Pavillon de Breteuil, le BIPM incarne l’universalité des unités de mesure. Mètre, kilogramme, seconde, kelvin… toutes les grandes unités prennent racine ici, à Sèvres, avant de s’imposer dans le monde entier. À cette occasion, la Ville de Sèvres et le BIPM proposent un programme riche et accessible à tous : Expositions : * Du 4 avril au 31 mai – Mezzanine de l’Hôtel de Ville : exposition photographique croisée Doisneau / Dallaporta * Du 5 au 26 avril – Médiathèque : exposition pédagogique autour de la métrologie * À partir du 4 avril : 9 clichés grand format sur les grilles de l’Hôtel de Ville Conférence : * 14 mai à 17h – Salon Saint-Omer (Hôtel de Ville) Intervention de Céline Fellag Ariouet, historienne, spécialiste du sujet et responsable du service exécutif au BIPM – Inscriptions dès le 7 avril sur sevres.fr Publications : * « 150 ans de mesures pour le monde », ouvrage publié chez Gallimard (parution le 6 mai) * Un livret spécial distribué à l’automne à l’occasion des Journées européennes du patrimoine Un anniversaire à la hauteur de cette institution scientifique mondiale, qui incarne le lien entre précision, rigueur et coopération internationale – et dont l’histoire continue de s’écrire depuis Sèvres. #BIPM150ans #Métrologie #VilledeSèvres #Science #BureauDesMesures #PatrimoineScientifique BIPM Céline Fellag Ariouet

𝐉𝐨𝐢𝐧 𝐦𝐞 𝐢𝐧 𝐏𝐚𝐫𝐢𝐬 𝐨𝐧 𝟐𝟎 𝐌𝐚𝐲 𝟐𝟎𝟐𝟓 𝐟𝐨𝐫 𝐭𝐡𝐞 𝐖𝐨𝐫𝐥𝐝 𝐌𝐞𝐭𝐫𝐨𝐥𝐨𝐠𝐲 𝐃𝐚𝐲 𝐒𝐲𝐦𝐩𝐨𝐬𝐢𝐮𝐦 𝐚𝐭 𝐔𝐍𝐄𝐒𝐂𝐎! As we mark the 150th anniversary of the Bureau International des Poids et Mesures (BIPM), I’m looking forward to joining metrology leaders from around the world to reflect on how measurement science continues to shape our future. This will be a milestone event with insightful discussions, an inspiring speaker lineup and a celebration of the our 150-year legacy. 📅 Explore the agenda: https://lnkd.in/eTZcVm7E 🔗 Register now to secure your place: https://lnkd.in/eVqTgJTt 𝐏𝐥𝐞𝐚𝐬𝐞 𝐣𝐨𝐢𝐧 𝐮𝐬 𝐚𝐭 𝐔𝐍𝐄𝐒𝐂𝐎 𝐨𝐧 𝟐𝟎 𝐌𝐚𝐲. #BIPM150 | #UNESCO | #FutureOfMeasurement | #Metrology | #WorldMetrologyDay

𝐃𝐢𝐝 𝐘𝐨𝐮 𝐊𝐧𝐨𝐰? While often interchangeable in commonly spoken English, the terms "accuracy" and "precision" are fundamentally different concepts when referred to in measurement science! ⚖️📏 🔹 Accuracy refers to how close a measured value is to the true or accepted value. 🔹 Precision describes how consistently repeated measurements produce the same result, regardless of their closeness to the true value. 𝐅𝐨𝐫 𝐞𝐱𝐚𝐦𝐩𝐥𝐞, 𝐢𝐟 𝐚𝐧 𝐚𝐫𝐜𝐡𝐞𝐫 𝐬𝐡𝐨𝐨𝐭𝐬 𝐚𝐭 𝐚 𝐭𝐚𝐫𝐠𝐞𝐭: 🎯 High accuracy, high precision → All arrows land tightly grouped at the bullseye. 🎯 High precision, low accuracy → Arrows are closely grouped but far from the bullseye. 🎯 Low precision, high accuracy → Arrows hit the bullseye but are scattered. 🎯 Low accuracy, low precision → Arrows land randomly across the target. ---- How would you explain the difference in your own words? Drop your answer in the comments below! 👇 #BIPM150 #MetrologyChallenge #DidYouKnow ?

𝐓𝐡𝐢𝐬 𝐰𝐞𝐞𝐤, 𝐢𝐧 𝐟𝐨𝐜𝐮𝐬: We had the pleasure of meeting with the President of the Consultative Committee for Electricity and Magnetism (CCEM), Prof. Dr Gert Rietveld this week. We asked him to offer a few insights into the current work of the CCEM and if he could share any exciting updates from their most recent meeting. 📽️ 𝐇𝐞𝐫𝐞'𝐬 𝐰𝐡𝐚𝐭 𝐡𝐞 𝐡𝐚𝐝 𝐭𝐨 𝐬𝐡𝐚𝐫𝐞 𝐰𝐢𝐭𝐡 𝐮𝐬...

The Directors of the #BIPM and the #BIML have issued a joint statement in celebration of World Metrology Day and the international commitment to a harmonized global measurement system based on the International System of Units (SI). 2025 marks both the 150th anniversary of the BIPM and the 70th anniversary of the OIML, which was established to facilitate the integration of measurement standards into national laws and regulatory frameworks, ensuring consistency in the use of measuring instruments worldwide As the world around us evolves, so too must our measurement systems - ensuring they remain precise, universally accessible, and capable of meeting the needs of future generations.

Do you know the difference between “𝐚𝐜𝐜𝐮𝐫𝐚𝐜𝐲” and “𝐩𝐫𝐞𝐜𝐢𝐬𝐢𝐨𝐧”? These two terms are often confused in measurement science—can you explain what sets them apart? 𝑫𝒓𝒐𝒑 𝒚𝒐𝒖𝒓 𝒂𝒏𝒔𝒘𝒆𝒓 𝒊𝒏 𝒕𝒉𝒆 𝒄𝒐𝒎𝒎𝒆𝒏𝒕𝒔 𝒃𝒆𝒍𝒐𝒘! 👇 --- Let’s see who really knows their metrology related acronyms 😉 #BIPM150 #MetrologyChallenge #DidYouKnow #MeasurementScience

This World Meteorology Day we've heard your eye rolls and lamentations when your non-technical friends mix up meteorology and 𝐦𝐞𝐭𝐞𝐨𝐫𝐨𝐥𝐨𝐠𝐲 and 𝐦𝐞𝐭𝐫𝐨𝐥𝐨𝐠𝐲! So we've come up with a simple explanation to help you explain it to them. "𝐖𝐡𝐨 𝐰𝐨𝐮𝐥𝐝 𝐲𝐨𝐮 𝐠𝐨 𝐭𝐨 𝐟𝐢𝐧𝐝 𝐨𝐮𝐭 𝐢𝐟 𝐢𝐭’𝐬 𝐠𝐨𝐢𝐧𝐠 𝐭𝐨 𝐫𝐚𝐢𝐧? ☔ While #meteorologists might tell you to pack an umbrella... #metrologists ensure that the temperature, pressure and humidity measurements behind those forecasts are accurate. 🌡️📏 So, no, we can’t predict storms or tell you if it’s going to rain. But we can make sure your thermometer is spot on!" Insert a ☔ or 🤦 in the comments below if you have encountered this problem.... and please like this and re-share it on your feeds to help spread the word! --- #NotWeatherScientists #MetrologyMatters #WorldMeteorologyDay #BIPM150