Nowadays, various places are in the scorching summer season. In the past, when the weather continued to be very hot and it didn’t rain for a long time, people often used artificial rainfall to properly solve the problem of drought. .
So do you know where the artificial rainfall method was first invented? Who invented it?
Where was the artificial rainfall method first invented?
The artificial rainfall method was first invented in the refrigerator.
The modern and practical method of artificial rainfall was invented by American chemist and physicist Irving Langmaur.
Ranmaur was an accomplished scientist who made outstanding contributions in many aspects throughout his life.
After Langmaur won the Nobel Prize, he did not revel in his achievements and stop scientific research. Instead, he contacted chemists Vincent, Joseph, Schaeffer and others to carry out joint research. Artificial rainfall research.
For the convenience of research, he designed a device in the refrigerator in his laboratory, which was filled with water vapor. By adjusting the temperature in the refrigerator, the water vapor became artificial clouds that simulated real weather.
However, during this research period, the results have been unsatisfactory.
Until one day in July 1946, the weather was extremely hot, and Langmaur carried out his experimental research as usual. Due to a malfunction of the refrigerator, the temperature in the experimental device equipped with artificial clouds could not drop. When I came down, I saw that the temperature was rising and the artificial cloud that had just been made was about to be destroyed.
In desperation, Langmore put dry ice into the device to temporarily cool it down.
Unexpectedly, as soon as he put a piece of dry ice into the refrigerator unit, a strange phenomenon appeared that he had never seen before.
The water vapor that made up the artificial cloud immediately turned into countless small ice crystals that were distributed in every corner of the refrigerator, and then gathered into pieces of snowflakes and fell one after another.
So Langmaur saw the hope of success and immediately called Schaefer and others to discuss how to use this method to carry out actual artificial rainfall.
After their further efforts, the idea of ??artificial rainfall was finally put into practice.
One day in 1946, Langmaur and Schaefer flew into the sky on an airplane equipped with the dry ice spreading equipment they designed. After finding the cloud layer they thought was suitable in the sea of ??clouds, Langmaur and Schaefer Fu started the equipment and spread the dry ice.
Thirty minutes later, an exciting scene appeared on the ground. Heavy rain fell from the sky.
The first real artificial rainfall in human history was successful.
Later, another American scientist, Bengart, improved Langmaur’s artificial rainfall method. He used silver iodide particles to replace the difficult-to-preserve dry ice, making artificial rainfall simpler and easier to implement. New methods have rapidly spread artificial rainfall.
Conditions for artificial rainfall
Artificial rainfall is not something you can just do if you want. It must have certain aerial cloud and water conditions.
Generally, the generation of natural precipitation requires not only certain macroscopic weather conditions, but also microphysical conditions in the clouds. For example, there must be large water droplets in warm clouds above 0℃, and cold clouds below 0℃. There must be ice crystals in the clouds. Without this condition, no matter how good the weather situation is or the cloud conditions are good, it will not rain.
Not all clouds can be used to "sow rain". Generally speaking, nimbostratus clouds and stratocumulus clouds in the low cloud family, or altostratus clouds in the medium cloud family are more suitable.
On a sunny day or with thin clouds in the sky, there are no conditions for artificial rainfall enhancement.
It is also very important to choose the location for artificial rainfall. Generally, it is necessary to judge the thickness, moisture content, speed and trajectory of the cloud layer, etc., and then select a location suitable for artificial rainfall operations based on its trajectory. Usually Under normal circumstances, stay away from densely populated residential areas and must be in an open area.
In summary, this is an introduction to some knowledge about artificial rainfall. After reading this, you will finally know that the earliest artificial rainfall was invented in a refrigerator.
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