Gravity has a universal character, but its strength rapidly decreases with distance, being the weakest of the four fundamental forces of physics[1]. In the 4th century BC, the Greek philosopher Aristotle considered as the cause of the fall of heavy … Read More
No animal, no being and no creature Who does not have its opposite: it is the law of nature. To look for the reason, they are superfluous care. God did well what he did, and I do not know more … Read More
Physicists did not at first concern themselves with these difficulties, but two new facts changed the face of things; the first is what is called the law of black radiation. A perfectly black body is one whose absorption coefficient is … Read More
Surrounding wheat mature before sapling Was still strong enough To fly and take flight, A thousand different cares the agitated lark Go for pasture, warn his children To always be on the look-out and to be sentinel … (La Fontaine) … Read More
Let us go back to the kinetic theory of gases; the gases are formed of molecules which circulate in all directions with great velocities; their trajectories would be rectilinear if from time to time they did not collide each other, … Read More
One wonders if Mechanics is not on the eve of a new upheaval; recently a meeting was held at Brussels, attended by some twenty physicists of various nationalities, and at each moment they might have been heard to speak of … Read More
A few years ago, I had the opportunity to expose some ideas about the logic of the infinite; on the use of the infinite in Mathematics, on the use made of it since Cantor; I explained why I did not … Read More
The antinomies to which certain logicians have been led come from the fact that they could not avoid certain vicious circles. It happened to them when they considered finite collections, but it happened to them much more often when they … Read More
Romania is interested in one of the mandates of European Commissioners for regional policy, energy, transport and the environment. “We have not finished the regional policy mandate, so we could once again ask for this very important portfolio. So, I … Read More
Is it possible to reason about objects that can notbe defined in a finite number of words? Is it even possible to talk about it knowing what one is talking about, and by saying something other than empty words? Or … Read More
No path of flowers leads to glory, I only want Hercules and his works to be a witness. (La Fountaine.) The first event I remembered was a terrible cataclysm that deprived me of all of my family at once, and … Read More
Ursula Gertrud von der Leyen (born Albrecht, on October 8, 1958) is a German politician and elected president of the European Commission. She was Germany’s Defense Minister from 2013 to 2019. Member of the center-right Christian Democratic Union (CDU), she … Read More
