In what area of space can a person see his back without the aid of instruments? Detailed answer

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In what area of space can a person see his back without the aid of instruments? Detailed answer

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In what area of space can a person see his back without the aid of instruments?

Light consists of elementary particles of photons that do not have mass and charge. Near black holes, there are so-called photon spheres - areas where gravity is so strong that photons begin to orbit.

If an observer enters the photonic sphere, he can theoretically see his own back.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

Where was baseball invented?

In England.

Baseball (originally spelled in two words: base ball) was invented in England. For the first time the name and description of the game appeared in 1744 in the collection "Dear Pocket Book". The book gained immense popularity and was republished in America in 1762.

Baseball is not based on the game of rounders, the first description of which does not appear until 1828, in the second edition of the Book for Real Boys. In the United States, rounders were first mentioned only in 1834, in Robin Carver's Book of Sports. As a source, the author referred to the "Book for Real Boys", but Carver called the game itself "base ball" or "goal ball" (From the English goal ("gate") and ball ("ball").).

In the first chapter of Northanger Abbey (1796), Jane Austen describes the young nude hero Katherine Morland as a girl who loves "cricket, baseball, horseback riding and outdoor games."

Baseball bosses eventually developed such a strong paranoia about the non-American origins of the game that in 1907 they decided on an unprecedented forgery. Baseball history report, commissioned by the Major League Executive Committee, puts forward the version that the ancestor of baseball was none other than Civil War hero General Abner Doubleday, who allegedly invented the game in 1839 in Cooperstown, New York .

Thus the legend was born. Despite ample evidence that ball and bat games have been played across America since the days of Puritanism, as well as the fact that Doubleday never visited Cooperstown and never mentioned baseball in his diaries, the fiction is firmly embedded in the souls. Americans. As one joker remarked, "Abner Doubleday didn't invent baseball - Abner Doubleday invented baseball."

And if anyone should be credited for inventing the modern take on America's favorite game, it's Alexander Cartwright, the Manhattan bookseller. He was a volunteer firefighter and in 1842 founded the New York baseball club "Knickerbocker" (named after the company that produced fire engines). He and his fellow firefighters played on the field between 47th and 27th streets. The rules of modern baseball, by the way, are based on the rules invented by them. Cartwright was also the first to draw a diamond field diagram.

In 1938, his name was officially inducted into the National Baseball Hall of Fame in Cooperstown.

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Robomobiles will be able to make decisions based on morality 15.07.2017

The development of autonomous driving technologies has raised many questions, including the difficult problem for autonomous systems of potential life-or-death decision making. Should autonomous car systems protect the lives of their owners at all costs, or will they have to sacrifice a driver to save a large group of people from death?

While there is no concrete answer to this question, a research team from Germany believes that morality may soon play a role in how self-driving cars will make decisions.

Evidence suggests that human morality is too context-dependent to accurately model, meaning that it cannot be effectively integrated into a self-governing algorithm.

Study participants were asked to drive a car in virtual reality through city streets on a foggy night. In virtual travels, they created emergency situations when it was impossible to avoid a collision with inanimate objects, animals or people. The subsequent decisions were modeled and turned into a set of rules creating a "value of life" model for every person, animal and inanimate object that might be involved in a traffic incident.

“Now that we know how to implement human ethical decisions into machines, we as a society are still left with a double dilemma,” says Professor Peter Koenig. “First, we must decide whether moral values should be included in the guidelines principles of how machines behave, and secondly, if there are any, should machines act in exactly the same way as people?

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