In the northwestern region of the Chinese province of Hunan is what is called the Gate of Paradiseone of the most renowned natural wonders of the People’s Republic of China. We’re talking about a huge one bow natural (Tianmen Cave) of rock on the mountain Tianmen (Tiānmén Shāni.e. mountain of the celestial door), which from the perspective of the tiny ...
Steve Jobs speaks during Apple’s Worldwide Developer’s Conference, June 11, 2007. Credit: Ben Stanfield, CC BY 2.0, via Wikimedia Commons. Steve Jobs he was one of the greatest innovators of our time, a visionary who redefined the concept of personal technology and how we interact with the digital world. Born in San Francisco In the 1955 and grew up in ...
The electric motor it is one of the most revolutionary inventions in history, a turning point in the electrification of the world. At the center of this revolution is the rotating magnetic fieldthe fundamental principle that allows alternating current (AC) motors to operate. But who was responsible for this discovery? TO Galileo FerrarisItalian physicist and engineer, o Nikola Teslathe famous ...
Among the many questions relating to the terrible fires underway in Los Angeles, many have asked: “Why is the water that the planes drop on Los Angeles red?”First of all it is not water: it is a foam (sometimes even powder) and it is a so-called ”fire-retardant”i.e. a flame retardant. What are fire retardants used for? Their main function is ...
The April 24, 2013in the city of Savar in Bangladesh, a building called Rana Plaza collapsed leading to the death of more than 1100 people and to the wounding of another 2500. The building housed five different factories of clothing, destined for the foreign market, especially fast fashion. There were signs of structural failure, highlighted since the previous day ignored ...
Surely you have noticed that There are small raised dashes on the “F” and “J” keys of the keyboard. They were not placed there by chance: these small design features hide a fundamental function for those who frequently use the keyboard. These small reliefs in QWERTY keyboards, in fact, are not an aesthetic feature, but a practical tool that helps ...
The black cow inside the triangle, the pedestrian crossing the road on a blue background, the car skidding on the wet road: these are all drawings that drivers are very accustomed to, because they are depicted on signs that we often see on Italian streets and that we know how to recognize from afar. It is already less obvious, however, ...
Comet C/2023 A3. Credits: Yellowstone National Park, Public Domain, Wikimedia Commons. The comet C/2024 G3 ATLAS will reach the perihelionthe minimum distance from the Sun, Monday 13 January 2025. The comet is currently located very close angularly to the Sun, which makes the observation from Italy extremely difficult. The last moments to attempt an observation, but only with professional tools, ...
The counter Geiger (or Geiger-Muller) is one of the best-known tools for identify the presence of ionizing radiation. This device, through the ionization of an inert gas, is able to produce and measure a electrical signal, quantified by a number on the display. This is a tool that has also entered the culture pop due to its typical “click” sound, ...
If you think about the Windows operating system, probably the first element that comes to mind is the button that opens the “Start” menu. This small and iconic UI detail, first introduced with Windows 95revolutionized the way we interact with computers. Previously, the Start menu (born in 1992) was called “System”. Born from the need to simplify the use of ...