​What secret did the skeleton of a 15th century nun hide ● Da Vinci calculated gravity long before Newton or Galileo ● Why do some people not get infected with Covid?

What secret did the skeleton of a 15th-century nun hide?

The discovery in 2007 of a medieval skeleton in a small grave behind the altar of All Saints Church in York raised many questions at the time. Not only its strange position, but also the location or markings on the bones were considered absolutely unusual.

It was evident that it belonged to a woman, and further analysis revealed that it was a certain Lady Isabel German, a woman of noble rank, who lived in seclusion for 28 years in a room in the said church sometime in the 16th century. What was striking was the fetal position of the skeleton, which contradicted medieval Christian practice.

Then the marks on the bones, which, according to laboratory analysis, showed not only that the person in question was suffering from arthritis, but also from an advanced form of syphilis. Hence a number of other question marks that will most likely remain unanswered.

How did a person who lived in isolation, without contact with people, manage to contract a venereal disease? Perhaps the disease existed in a latent state and appeared relatively late. But all variants of the occurrence of such a disease are equally possible, including the fact that it can be considered as a positive fact, a divine attempt to test the faith of a sick person.

What is certain is that Lady German had visible marks all over her body, and it is quite possible that this also affected her mental health. That he was a person of high rank is evident from the place chosen for his burial. But why he was in the position of an embryo, it has not yet found a plausible explanation.

Da Vinci calculated gravity long before Newton or Galileo

In an article published in the specialized journal Leonardo, three researchers from the California Institute of Technology draw attention to some forgotten documents from the Codex Arundel, a collection of texts written by Leonardo da Vinci between 1480 and 1518. More precisely, it is a series of experiments that show that da Vinci paid attention to gravity long before Galileo or Isaac Newton.

The Italian erudite conducted a series of experiments with moving objects (sand or water), noting how they accelerate when falling, as well as the relationship between the speed with which, for example, a container of water moves and the speed with which it reaches land In essence, Da Vinci was trying to mathematically explain gravity, or the “equation of motion,” as he called it.

What’s interesting is that da Vinci even managed to calculate the gravitational constant G with 97% accuracy, which is even more impressive because he did it without any tools to help him calculate the time it took for objects to fall .

Why do some people not get Covid?

Three years have passed since the start of the COVID pandemic, and we still have many questions waiting to be answered. For example, we know that hundreds of millions of people have gone through the experience of being infected, some even twice or more. We know that there are effects of so-called prolonged Covid, but we are still trying to identify and fully understand them.

However, there are people who have been in contact with the infected, have been in contact with the virus, but have not been in contact with the disease. And the answer now, as bleak as it may seem, is that no one knows why this is happening.

At this time, scientists are trying to identify those genes or mutations that lead to the body’s natural resistance to the virus. This is extremely difficult given the speed at which the virus mutates. Even so, the discovery of genetic mutations that lead to natural immunity to Covid does not mean we have found a cure.

The same as with the remote effects of Covid, or the so-called long Covid. We know that some people develop them, but we don’t know why they don’t develop in all people who have been infected.

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