Search results for “concentration de dioxyde de carbone”

Are carbon nanotubes safe or harmful?

Carbon nanotubes, or CNT, are being used to make products stronger, lighter, faster, and more efficient. But are they safe? A growing body of research is raising concerns over the hazards presented by some forms of the material. As ever though, the risk to health depends on who is exposed to what

09 Concentrations

In this Screnncast, substance quantity and mass concentrations are discussed. Here, too, no derivations or exercises are made. At the end there is a summary of all previous mathematical relationships. Original: "Wolfgang Dukorn" Original: German. All translations in this video have been done by th

Carbon-Fiber Car of the Future

In this video segment adapted from NOVA, hear physicist and energy expert Amory Lovins explain how to make more efficient cars by making them lighter and more aerodynamic. Explore how the use of carbon fiber can reduce weight without reducing size or durability, and learn about some manufacturing ch

How the Auschwitz concentration camp was built

In 1940, the Germans turn a former barracks into the Auschwitz concentration camp. But this later so-called main camp is only the beginning - 47 subcamps are established. Author: ZDF/Dirk Kämper, Winfried Laasch/Kawom! Translation and dubbing: alugha Click here to see more videos: https://alugha

Hannah Hypothesis examines stress concentrations

Click here to see more videos: https://alugha.com/CalvinRans Mrs. Hannah Hypothesis examines the concept of stress concentrations in structures. This video series began as a segment in the MOOC called Introduction to Aerospace Structures and Materials offered by the Faculty of Aerospace Engineeri

The Auschwitz-Birkenau concentration camp

From the end of 1941, a new camp had been built in the so-called "Auschwitz area of interest" of the SS. It was located three kilometers away from the existing Auschwitz concentration camp. Starting in March 1942, people were murdered by poison gas in two former farmhouses in Birkenau. Author: ZDF/