Résultats pour "The Chimes" dans Sciences exactes

Comment le dentifrice agit-il sur nos dents, les effets du café sur notre cerveau, l'incroyable chimie des odeurs corporelles, les molécules du stress, pourquoi dit-on "brûler ses graisses"... La chimie est partout et personne ne vous l'avait dit ! Mai Thi Nguyen-Kim, jeune chimiste passionnée, nous invite, le temps d'une journée, à parcourir le laboratoire de chimie qu'est notre vie, jusqu'à notre propre microbiome, un écosystème encore plus fort que le microbiote.

At the dawn of the 20th century, humanity was facing global disaster. Mass starvation, long predicted for the fast-growing population, was about to become a reality. A call went out to the worlds scientists to find a solution. This is the story of the two enormously gifted, fatally flawed men who found it: the brilliant, self-important Fritz Haber and the reclusive, alcoholic Carl Bosch. Together they discovered a way to make bread out of air, built city-sized factories, controlled world markets, and saved millions of lives.

النظير هو شكلٌ مختلفٌ من عنصرٍ كيميائيٍّ يحتوي على عددٍ مختلفٍ من النيوترونات في نواته. وقد وُصفَت النظائر، من جانب مكتشفها فريدريك سُدي، بأنَّهـا «متطابقـة من الخـارج» و«مختلفـة من الداخل»، ومن الممكن أن تكون مستقرَّة أو مشعَّة. في هذه المقدِّمة الموجزة، يوضِّح روب إلام الدور المهم الذي لعبته دراسة النظائر فـي العلم الحديث. ويفسِّر كيف أدَّت عمليَّـات طبيعيَّـة إلى التمييز بين النظائر، ويصف التطبيقات العديدة للكيمياء الجيولوجيَّـة للنظائـر، بدايـةً مـن استكشـاف باطـن الأرض العميـق، وصولاً إلى النُّظُم الغذائيَّـة للحضارات القديمة، ومن المفاعلات النوويَّـة إلى تقنيَّـات التصوير الطبيَّـة.

La Parole à ... découvrir ceux qui, grâce à la chimie, répondent aux grands défis qui attendent notre société pour un monde plus durable. Puits de Science... Le podcast scientifique de la Fédération Gay-Lussac. Une plongée au cœur de l’univers de la chimie, de la science exaltante et de ses applications dans notre vie de tous les jours ! Vis ma Chimie... Le podcast grand public de la Fédération Gay-Lussac – en partenariat avec le réseau des jeunes chimistes Partout dans le monde et loin des idées reçues, la tête dans les formules et les pieds sur terre, ...

Interesting anecdotes and engaging tales make science fun, meaningful, and accessible. Separating sense from nonsense and fact from myth, these essays cover everything from the ups of helium to the downs of drain cleaners and provide answers to numerous mysteries, such as why bug juice is used to color ice cream and how spies used secret inks. Mercury in teeth, arsenic in water, lead in the environment, and aspartame in food are discussed.

In The Secrets of Alchemy, Lawrence M. Principe, one of the world's leading authorities on the subject, brings alchemy out of the shadows and restores it to its important place in human history and culture. By surveying what alchemy was and how it began, developed, and overlapped with a range of ideas and pursuits, Principe illuminates the practice. He vividly depicts the place of alchemy during its heyday in early modern Europe, and then explores how alchemy has fit into wider views of the cosmos and humanity.

Through family interviews, diaries, letters, and workbooks that had been sealed for over 60 years, Barbara Goldsmith reveals the Marie Curie behind the myth - an all-too-human woman struggling to balance a spectacular scientific career, a demanding family, the prejudice of society, and her own passionate nature. Obsessive Genius is a dazzling portrait of Curie, her amazing scientific success, and the price she paid for fame.

Are you a curious kid? Do you like to know the logical and often the scientific reason behind things that happens around you? Does it ever wonder you that: Why is sky blue in color?How do birds fly?Why is seawater salty?How does an airplane fly?Why are leaves green? Well if you also tend to stress your mind to find the answers to such questions, then you are in the right place. “Kabhi Socha Hai” is a factual science podcast for kids. Each episode is 3-4 minutes long where we take on such an interesting topic head-on and provide a scientific and/or logical explanation that is easy to ...

We live in a complex world where we are surrounded by things and gadgets that make our life, well, let’s say easy. But in this busy schedule, when we take most of things for granted, we hardly pause for a second to think about how this thing came into being and who the brains behind it were.We often use the phrase "Necessity is the mother of all inventions" but do you know a ton of the world inventions were actually accidental? The inventions that changed the world on its head and became a part of our daily lives have often an interesting story to tell - a story that can be a great source of...