Let us indicate, in its essential features, the change of mind produced by the prodigious success and by the diffusion of Newton’s celestial mechanics: at the beginning of the 18th century, a sort of Cartesian orthodoxy reigned almost everywhere in … Read More
Functioning Figure 3. Isotope exchange plant with water distillation. Source: Magazine, no. 7/2008. Translation and editing Nicolae Sfetcu With the help of the previously prepared sodium sulfide, it was proceeded to the preparation of hydrogen sulfide used in the isotopic … Read More
(The Anticitera mechanism, an analog computer built in Antigua to predict astronomical positions and eclipses. Algunas de las ciencias de las primeras civilizaciones fueron la astronomy y las mathematics) The history of science is the study of the evolution of … Read More
Now I must add that I consider these changes beneficial. Let us indeed leave ponderable matter behind. What would my situation be with regard to light, and more generally electromagnetic facts, if my dimensions of space and time had remained … Read More
Blaise Pascal (1623-1662) is not a philosopher: he is a scholar and an apologist for the Catholic religion. A scholar, he is in the tradition of mathematical and experimental physics which led from Galileo to Newton. An apologist, he is … Read More
Figure 1.1 This image might be showing any number of things. It might be a whirlpool in a tank of water or perhaps a collage of paint and shiny beads done for art class. Without knowing the size of the … Read More
We have just looked for how light could have the same speed for the fixed observer and for the moving observer: the deepening of this point revealed to us that a system S’, resulting from the splitting of a system … Read More
Scientific disciplines (also called ”branches of science”, “sciences” or “fields of science”) are subdivisions of science and branches of knowledge that use a rigorous and systematic method to study a particular area of knowledge. Scientific disciplines are characterized by the … Read More
What will happen when operators respectively placed at 0 and at A want to measure the speed of light by noting, on the clocks tuned together which are at these two points, the moment of departure, the moment of arrival, … Read More
The interpretation of Isaac Newton’s texts has sparked controversy to this day. One of the most heated debates relates to the action between two bodies distant from each other (the gravitational attraction), and to what extent Newton involved God in … Read More
About the possibility of time traveling based on several specialized works, including those of Nicholas J. J. Smith (“Time Travel“), William Grey (”Troubles with Time Travel”), Ulrich Meyer (”Explaining causal loops”), Simon Keller and Michael Nelson (”Presentists should believe in … Read More
Today there are 6,800 reptile species on earth; the major groups are alligators and crocodiles, turtles, lizards, and snakes. Reptiles are tetrapods and amniotes, animals whose embryos are surrounded by an amniotic membrane. Today they are represented by four surviving … Read More
