What are the dangers of using dihydrogen monoxide? Detailed answer

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What are the dangers of using dihydrogen monoxide? Detailed answer

Big encyclopedia for children and adults

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What is the danger of using dihydrogen monoxide?

Since the 1990s, there have been frequent calls on websites and mailing lists to ban the use of dihydrogen monoxide. They list the numerous dangers that this substance causes: it is the main component of acid rain, accelerates the corrosion of metals, can cause a short circuit, etc. Despite the danger, the substance is actively used as an industrial solvent, food additive, nuclear stations, and enterprises dump it in huge quantities into rivers and seas. This joke - after all, dihydrogen monoxide is nothing but water - should teach critical perception of information. In 2007, a New Zealand MP bought her. He received a similar letter from a voter and forwarded it to the government, demanding that the dangerous chemical be banned.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

What single-celled organisms are the descendants of jellyfish?

Evolution does not always mean the complication of organisms. An example of extreme simplification is the single-celled parasites Myxozoa, which are relatives of jellyfish. Their connection was suspected due to the similarity of the polar capsules of Myxozoa with cnidating cells of the coelenterates and proved by DNA analysis. In the course of specialization, the genome of these parasites decreased by more than 95%, including the genes responsible for the formation of multicellular individuals.

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In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

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Random news from the Archive

Honest reward enhances memory 29.06.2020

One of the factors that influence memory is reward. Everything that is associated with reward is remembered especially well, but although the positive effect of reward on memory has long been known, it is not entirely clear how long such an effect lasts and how the psychological mechanism that links reward and memory works in detail. To find out, researchers from the University of Geneva, the University of Toronto and the Weizmann Institute set up an experiment in which about three dozen volunteers had to point out how certain characters and certain objects are related.

It looked like this: a person was shown a character and two items to choose from, and it was necessary to say which item corresponds to the character. Here it was possible either to guess or not to guess, and for each correct answer the participant in the experiment received a point, but if he did not guess, then the point was lost; earned points then turned into real money. Obviously, the researchers could arbitrarily determine how well a person would play: he was allowed to guess almost everything, or almost nothing, or fifty-fifty.

Twenty minutes after the first round, it was necessary to pass the second - again it was required to guess the associations between the character and objects in order to earn additional points. But now the participants in the experiment could remember which connections were right and which were wrong - after all, they had just played it. If the reward enhances memory, then one would expect those who received the most money in the first round to play best in the second round - they should remember the connections between the pictures better than others.

The participants of the experiment played the game while in the magnetic resonance imaging machine - so they managed to see that, remembering the associations, the brain connected not only the usual memory center of the hippocampus, but also another area that is part of the reinforcement system and which is responsible for the pleasure of the reward and for motivation. However, according to an article in Nature Communications, the best memory performers were those who received a moderate reward, not the smallest, but not the largest. Too easy a game, too easy a reward did not motivate the brain to memorize.

Memory is enhanced by an honest reward - that is, from one for which some effort was really expended, and not from one that was almost for nothing.

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