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BIG ENCYCLOPEDIA FOR CHILDREN AND ADULTS
How does asparagus grow? Detailed answer
Directory / Big encyclopedia. Questions for quiz and self-education Did you know? How does asparagus grow? During the time of the ancient Greeks and Romans, asparagus (asparagus) was considered one of the most exquisite delicacies. However, as strange as it may seem, it still grows wild in many European countries on the Mediterranean coast, as well as in other places with sandy soil. It is so common in the steppe regions of Russia that it serves as food for grazing cattle! About one hundred and fifty species of wild asparagus are widely found in hot and tropical countries. Many of them are cultivated, and often for purely decorative purposes. A remarkable feature of this plant is that its tender shoots are eaten, and fern-like leaves serve as decoration for the interiors of houses. If they want to use asparagus as a food product, then its stems are cut off while the leaves have not yet blossomed from the buds and the length of the shoots does not exceed thirty to thirty-five centimeters. Asparagus is a plant from the lily family, and, as already noted, there are many varieties of it. If the plant is allowed to grow normally, without cutting off the stems, it grows to sixty centimeters or even more, and it grows twigs, on which first small white flowers bloom, and then red shiny berries appear. Although soups, hot dishes and salads, asparagus is considered a highly refined food, its nutritional value is low due to its high water content. Asparagus can be grown from seeds or from roots planted in shallow grooves. They should be planted where the surface layer of soil is deep enough, rich in nutrients and also contains a lot of sand. If the plant does not die in the first three years of life, then subsequently it will bear fruit annually for nine years or more. It should be remembered that it is necessary to enrich the soil every year by fertilizing it in order to get a good harvest. Author: Likum A.
Who made the first clock? When we talk about watches, we mean a device for measuring time. But man had known ways of counting time long before he invented such devices. Sunrise and sunset were the first indicators of time. The increase and decrease in shadows from sticks, stones and trees also served to tell time. The movement of the stars also served man as something like a giant clock. He noticed that as the night wore on, various stars became visible. The ancient Egyptians divided the night into twelve time periods corresponding to the rising of 12 stars. They divided the day in the same way, and our 24-hour day is based on the Egyptian division of day and night. The Egyptians also made shadow clocks - wooden bars with signs. Ultimately, these shadow or sundials, having 12 periods for dividing the day, were the first hours. The next types of clocks were water and fire. The sliced candle counted time as it burned from slice to slice. And in the water clock, a plate with a small hole at the bottom was placed on the water. After a certain time, the floating saucer fills with water and sinks. About 2000 years ago, man invented another type of clock - hourglasses. They consisted of two hollow glass vessels connected so that the sand could be poured from one to the other. The upper vessel was filled with sand in such quantity that it spilled out into the hole within an hour. Around 140 BC, the Greeks and Romans used the cogwheel to improve water clocks. The float, placed in the vessel, rose when the water flowed in a thin stream into the vessel. It was connected to a gear wheel. The wheel turned the hand, which gradually moved from one hour mark to another. And after 1400 years, the first mechanical clock was invented. The load was tied to a string, which turned the coil, which in turn moved the axis of the cogwheels and gears. The wheels turned the arrow on the dial.
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