They asked me whether from the top of the Teide volcano on the island of Tenerife in Spain you can see Morocco and its coasts. The answer is definitely no. In this article I will explain why and how to calculate it. As well as some curiosities about what you can really observe from Teide.

What happens when an infected person sneezes in a room? Perhaps this is clearer to you. As you can see from the video of this 3D simulation, the virus particles propagate very quickly, around those who have sneezed or who have had a cough. The same person can be, perhaps even asymptomatic. A whole series of activities therefore makes no […]

Just woke up… I open facebook, having done a strong cleaning between the contacts, fortunately. Now I finally see only my dearest friends and those whom I consider people worthy of being displayed on my personal wall, people whom I sincerely admire and appreciate and with whom I am pleased to exchange information and news, opinions and contributions and who […]

A même that made me think a lot. Very current in these times. Indeed it is not true that we are all in the same boat, each of us at this moment is on very different boats and is facing the same storm, which can be associated with that of the COVID-19 pandemic with the our own means, as if […]