Tot es mou tv3
All “Tot es mou” TV programs with Pere Renom.
The mask test
With the increase in the spread of coronavirus in the Segrià region (Lleida, Catalonia), the Government of the Generalitat is considering forcing the use of the mask in all public spaces. At Florida Atlantic University, an experiment was carried out with water, glycerin and laser light to visualize the behavior of the aerosols that we […]
Overlooking the sea
Humans have been linked to the coast for millennia, both to migrate, to transport goods, to live or to spend the summer. One of the earliest migratory routes of modern humans left Africa, traversing the Arabian peninsula, India, and the islands of SE Asia until reaching Australia some 50,000 years ago. These humans had discovered […]
Coronavirus hotspots
After the first wave of coronavirus, many countries have relaxed containment measures and are beginning to detect outbreaks, to the point that in some places, such as Korea, epidemiologists are beginning to talk about a second wave of the pandemic. However, official data from the World Health Organization (WHO) show that, for the moment, the […]
Chaos, unpredictability and butterfly effect
The movement of a pendulum is one of the most predictable phenomena out there. If we know the length, we can accurately calculate the period of oscillation. Whatever the height from which we launch it (amplitude), its period remains constant, as already observed by the Italian astronomer and physicist Galileo Galilei. In fact, this ingenuity […]
The wrong fear
Fear is an emotion produced as a reaction to a real or imaginary danger that prepares the body for escape, or for confrontation (fight or flight). When we are afraid, a series of immediate physiological changes take place in our body: it increases the heart rate, blood pressure, cellular metabolism, blood glucose, adrenaline and brain […]
Flat and convex maps
Like many other animals, humans are territorial. This implies having a convex perception of space. To understand it we can observe a convex mirror. We have a very precise idea of our immediate environment, so precise that we tend to magnify its size, while the mental image of the environment becomes imprecise and diffuse as […]
Evolution of Covid-19
If we look at the cases of Covid-19 detected and the number of deaths produced on the website of the World Health Organization (WHO), we see that all the countries of the world show an approximately similar evolution. Initially there is a very sudden increase in infections according to a function mathematically close to an […]
Raise like rabbits
Rabbits are herbivorous animals of relatively small size, hunted by many carnivores and super-carnivores, therefore they are located just above the base of the food pyramid. To survive, they have developed different strategies, such as a body adapted to flee at high speed, a panoramic vision that allows them to monitor their surroundings, an excavating […]
Biodiversity and epidemics
Our planet is occupied by the most diverse ecosystems: deserts, polar zones, temperate forests, rain forests or coral reefs. In general, the closer to the equator, the more biodiversity in the ecosystems. And the more biodiversity, the more complex are the trophic relationships between its organisms. However, surely most ecosystems have some so-called “key” species, […]
Streams of vitamin D
Vitamins are heterogeneous compounds essential for life, since ingested in essential doses, they promote correct physiological function. In humans, there are 13 vitamins: 4 fat-soluble (A, D, E and K) and 9 water-soluble (8 B vitamins and vitamin C). Vitamin D regulates the intestinal absorption of Ca, Mg, and P, therefore promoting the growth and […]
