Why two centuries ago, special people in England were spitting peas in the windows of houses? Detailed answer

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Why two centuries ago, special people in England were spitting peas in the windows of houses? Detailed answer

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Why two centuries ago, special people in England were spitting peas in the windows of houses?

With the onset of the industrial revolution in the second half of the 18th century, many city dwellers got jobs in factories with tight schedules, but not everyone could afford to have a clock to wake up on time. In England and Ireland, this problem was solved by the so-called "alarmers", or knocker-ups. These were special people who, for a small fee, walked the streets every morning and woke up their clients by knocking on the door with sticks until they were sure that the client was woken up. If the worker lived on the second floor, he was awakened by the sound of a long stick or by spitting peas from a blowpipe out the window.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

What is irrigation?

Irrigation, or land irrigation, is the artificial attraction of additional water to certain lands in order to accelerate the growth and maturation of plants. In ancient times, irrigation was a natural process. For example, the annual flooding of the Nile River brought a thin layer of silt to the fields. Together with him, the earth received a sufficient amount of water, and the plants could develop well.

Where irrigation occurred naturally, people sometimes built canals, reservoirs, drainage ditches. At the same time, water from the flood of rivers could go where it was required, or could be used in the future. These were the very first man-made irrigation facilities. These days, costly dams and storage facilities are needed to get enough water for irrigation. Their construction costs can be so great that not all lands are irrigated. Only crops such as vegetables and fruits generate enough income to cover these costs.

The type of irrigation facilities used depends on the type of crops grown. Infrequent irrigation is sufficient for pastures, fodder crops and grasses, as well as cereals. Furrow irrigation, that is, the distribution of water in ditches between rows, is required for sugar beets and vegetables. Sometimes a system of underground and surface pipes is laid. Irrigation is needed not only in dry areas.

In Asia, irrigation systems are essential for rice cultivation because rice fields must be constantly covered with water until harvest. In some parts of the world, supplemental irrigation is used. Pipes and sprinklers bring water to where it is needed most. This saves valuable crops from drought.

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Vibration meter on ARM processor 04.02.2015

The BeagleBone Black board with an AM335x processor (ARM Cortex-A8, 1 GHz) was used as the basis for the DT7837 module by the designers of Data Translation. The module, according to its creators, is the first vibration meter on an ARM processor.

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The DT7837 also includes a 24-bit DAC output, general purpose I/O lines, counters/timers, and other peripherals. They are accessed by calling API functions.

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