There are tricks to do it multiplication in mindquickly, without resorting to column multiplication. In general it involves replacing a multiplication with simpler operations that give the same result, but some of them seem like magic tricks. Let’s see some of them, those that exploit simpler operations, the magic trick of multiplication by 11 and that of the product of ...
A flaw in the system with which WhatsApp identifies contacts in the address book has allowed a group of academics to rebuild a global database of over 3.5 billion active accounts. We are not talking about the content of the messages, which remained protected, but about an enormous amount of personal metadata (phone numbers, profile images, information texts and even ...
You know the image of a open jar on your favorite cream or cleanser? Inside there are usually written gods numbers. But what are they and what are they for? It’s about the PAO, Period After Openingi.e. the maximum period after opening in which the product is still safe to use. In fact, when they are still sealed, many cosmetics ...
Is it written “alongside” or “next to”? “In form” or “in form”? “OK” or “alright”? Beyond or afterlife? It often happens that many Italians have doubts about whether or not to write two terms by separating them (or interposing an apostrophe between them), and grammatical errors are the order of the day. The causes are to be found primarily in ...
Satellite view of the Strait of Gibraltar. Credit: NASA The Tunnel under the Strait of Gibraltar it is an ambitious project, discussed for decades, which aims to connect Europe to the African continent. If on paper the two continents seem very close, the geological reality tells a different story: between seabeds that descend to over 400 meters and unstable terrain, ...
All it takes is a meow, a wagging tail when we get home and we immediately feel better. We call her Pet Therapybut the technical term is Animal Assisted Interventions (IAA) a useful tool for promote socializationreduce anxiety and improve the quality of life of patients of all ages with psychological, physical, motor and behavioral problems. The scientific evidence, however ...
In Italy when we want to complain, say we are bored, show disappointment, or rail against someone, “what a drag” it is undoubtedly one of the expressions we use the most. In common parlance, “balls” is a metonym for i testicles, it is an elliptical and immediate way to express boredom, frustration, annoyance. As Cafébabel states, it is a “cleared ...
Some foods have an expiration date, others have an expiration date minimum shelf lifebut did you know that there are also foods that don’t need expiration dates at all? Well yes, there are food products for which it is not necessary to indicate the deadlinelisted in Annex X of European Regulation 1169/2011. Think about it: have you ever seen a ...
The jadeite cabbage. Photo Credits: Taipei National Palace Museum It often happens that museums, despite hosting varied and rich collections, become famous for one work of art in particular: the Botticelli’s Venus at the Uffizi Galleriesthe Mona Lisa at the Louvre and the Rosetta Stone in the British Museum they alone attract hordes of visitors from all over the world. ...
How much do our household appliances consume in a year? To answer this question precisely, you need to start by reading the energy label of the device under consideration, which indicates an estimate of the average annual consumption, after which you need to apply some simple mathematical formulas that allow the actual calculation. We would like to point out that ...