Novedades del último mes en eBooks de Estudios y ensayos

Un enfoque fresco y divertido para entender cómo la física puede salvarnos del fin del mundo.¿Y si el fin del mundo no es una metáfora, sino un problema físico?¿Y si la solución no es solo política, sino cientifica?¿Y si entender como funciona el universo es nuestro mejor plan de supervivencia?La vida en la Tierra es, seamos sinceros, una rareza estadistica de proporciones galacticas. Habitamos una roca que flota en la nada, calentada por una bola de fuego a la que no podemos acercarnos y gobernada por leyes fisicas que no descansan ni en festivo. Y, aun asi, este absurdo cosmico es precisamente lo que podria ayudarnos a evitar nuestro propio fin del mundo.Porque antes de preocuparnos por lo que viene, necesitamos entender el escenario en el que todo ocurre: que fuerzas sostienen el universo y que sucede cuando las ignoramos.Esto no es un sermon ecologista ni una profecia apocaliptica. Es una invitacion a mirar nuestro planeta -este improbable oasis azul- con nuevos ojos. Y a entender que, si queremos tener un futuro, antes debemos comprender el tablero en el que jugamos.Leo Olivares, creador de la cuenta @ciencia_radiactiva, y Marc Mesa, experto en fisica, nos guian en un recorrido desde el Big Bang hasta el cambio climatico, explorando los limites mas incomodos de la energia y la materia a traves de paradojas cotidianas y las grandes crisis que definiran nuestro destino.La buena noticia: tenemos el conocimiento.La mejor noticia: aun estamos a tiempo.La fisica ya nos señala el camino. Solo falta que aprendamos a seguirlo.

Michael Faraday (1791 1867) was an English scientist who contributed to the fields of electromagnetism and electrochemistry. His main discoveries include those of electromagnetic induction, diamagnetism and electrolysis.Although Faraday received little formal education, he was one of the most influential scientists in history. It was by his research on the magnetic field around a conductor carrying a direct current that Faraday established the basis for the concept of the electromagnetic field in physics. Faraday also established that magnetism could affect rays of light and that there was an underlying relationship between the two phenomena. He similarly discovered the principle of electromagnetic induction, diamagnetism, and the laws of electrolysis. His inventions of electromagnetic rotary devices formed the foundation of electric motor technology, and it was largely due to his efforts that electricity became practical for use in technology.As a chemist, Faraday discovered benzene, investigated the clathrate hydrate of chlorine, invented an early form of the Bunsen burner and the system ofoxidation numbers, and popularised terminology such as anode, cathode, electrode.

Da teoria à prática: veja como simulações interativas transformam o ensino de Óptica. Baseada em tese de doutorado, esta obra oferece caminhos para uma educação científica inovadora com IA.

Every home cook has experienced the frustration of a beautiful piece of meat instantly sticking to a stainless steel pan, tearing apart and ruining dinner. The instinct is to blame the pan or a lack of oil. However, the secret to a flawless, non-stick sear on raw steel isnt greaseit is a fascinating quirk of thermodynamics known as the Leidenfrost Effect.When a pan reaches a specific, critical temperature, something magical happens. A drop of water placed on the surface doesnt instantly boil away; instead, it beads up and dances furiously across the metal. This occurs because the bottom of the droplet vaporizes immediately, creating a microscopic, insulating cushion of steam that levitates the rest of the water. This exact same invisible shield of vapor is what prevents proteins from fusing to the hot metal, allowing cooks to achieve a restaurant-quality crust without tearing the food.This engaging culinary exploration bridges the gap between the physics lab and the kitchen stove. It breaks down the molecular mechanics of heat transfer, the science of steam barriers, and why temperature control is the ultimate ingredient in cooking.Say goodbye to ruined steaks and frustrating cleanups. Master the precise physics of the Leidenfrost Effect, ditch the toxic non-stick coatings, and learn to cook with the scientific confidence of a Michelin-starred chef.

André-Marie Ampère foi um dos cientistas mais importantes da história da física. Maxwell, por exemplo, fez a seguinte avaliação: "A investigação experimental por meio da qual Ampère estabeleceu as le

The materials for the sketch of this astonishing man are sufficiently abundant. We make special use in this place of those charming letters which his daughter wrote to him from her convent home. More than a hundred of these have been preserved, and it may well be doubted whether any more beautiful and touching series of letters addressed to a parent by a dearly loved child have ever been written.An admirable account of this correspondence is contained in a little book entitled "The Private Life of Galileo," published anonymously by Messrs. Macmillan in 1870, and I have been much indebted to the author of that volume for many of the facts contained in this chapter.Galileo was born at Pisa, on 18th February, 1564. He was the eldest son of Vincenzo de Bonajuti de Galilei, a Florentine noble. Notwithstanding his illustrious birth and descent, it would seem that the home in which the great philosophers childhood was spent was an impoverished one. It was obvious at least that the young Galileo would have to be provided with some profession by which he might earn a livelihood.