What literary hero began to use many methods of forensic science before the police? Detailed answer

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What literary hero began to use many methods of forensic science before the police? Detailed answer

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What literary hero began to use many methods of forensic science before the police?

Arthur Conan Doyle, in the stories of Sherlock Holmes, described many forensic techniques that were still unknown to the police. Among them, collecting cigarette butts and cigarette ashes, identifying typewriters, looking through a magnifying glass for traces at the scene. Subsequently, the police began to widely use these and other methods of Holmes.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

Who Invented Notes?

For a long time, music was not recorded. It was sung or played from memory. It passed from one performer to another and distorted over time. It was necessary to find a way to record music in order for it to be performed exactly the way it was composed by the author. So there was a way to record music with the help of notes.

The system of musical notation adopted today in the Western world was created over the centuries - from the end of the 1700th century to the early XNUMXs. It originated in the cathedrals and monasteries of the Roman Catholic Church. Many church services were sung, but they were sung from memory. By the end of the XNUMXth century, they began to write dots and dashes over the words of the prayer book, as well as draw small curls. These icons were not yet notes, they only showed the direction of the melody and were still very inaccurate.

By 900 A.D. e. came up with a better way. Signs began to be written at a certain distance above or below the horizontal red line, which meant the note "fa" in pitch. Such a record showed where you need to sing high, and where - low. The stave was invented by the monk Guido d'Arezzo. It consisted of four lines. This method made it possible to show the duration of each note. It was improved in the XIII-XIV centuries. The notes took on a new form, with sticks added to some of them in accordance with their duration. By the 1600s, the notes became round and the musical notation took on a modern look.

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Electric shock against weeds 23.10.2018

British scientists offer agricultural workers to fight weeds with electric current.

The development of this method was made within the innovative project RootWave. The idea to put it into practice arose as a result of demonstrating the possibilities of using a hand cultivator in parks and gardens. In turn, RootWave is a system that can be installed on a tractor. While moving, it sends out a charge of current that kills weeds more than five centimeters in height. The cleaning equipment is powered by the tractor's power take-off shaft.

The development company thought about the need for the described system after the use of pesticides was banned in a number of countries. For example, French and German agriculture is now forced to do without sixty-six percent of the substances mentioned.

So far, the project has received recognition at the London FoodBytes exhibition and has earned the Judges Choice Award. Now its representatives are at the stage of searching for investors.

The start of mass distribution of RootWave is scheduled for 2020.

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