When was the first time food was frozen? Detailed answer

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When was the first time food was frozen? Detailed answer

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When was the first time food was frozen?

We consider freezing food a modern invention, but in fact it is one of the oldest ways to preserve food. Since the time when man settled in cold regions, he has been freezing fish, game and other meat products for future consumption.

The first known patent for freezing food was issued in 1852 in England. According to this method, the products were immersed in an ice-salt solution. And all other patents issued at that time for freezing food were based on the use of ice-salt solution. But freezing food didn't see much use until the advent of the mechanical refrigerator. It allowed meat products to be frozen and transported over long distances.

At the beginning of the 1908th century, attempts were made to freeze not only meat and fish, but also other products. G. S. Baker began freezing fruit in Colorado in 25. The main goal was to freeze the unsold part of the fruit crop in order to sell it later. At first, only certain types of fruit were frozen, mainly strawberries and cherries. They were frozen by the cold-packing method. This means that containers or containers with fruit were placed in large storerooms, where the temperature was about -XNUMX degrees.

In 1916, experiments carried out in Germany showed that food can be frozen in a fast way - in a few hours. In 1917, Clarence Birdsay began developing a method for freezing food in small containers (bags) for sale in stores. But only in 1919 such packages of frozen foods appeared on the market.

The results of his experiments and the work of others showed that many vegetables could be frozen in this way, and that the industry of frozen foods began to expand.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Was the first computer bug a real insect?

(English "bug" has several meanings: "bug" (in different senses) and "bug in the program" (computer slang).)

Yes and no.

Let's start with yes. In 1947, a US Navy Mark II computer in a large auditorium (without air conditioning) at Harvard University was disabled by an ordinary moth stuck between the contacts of an electromechanical relay. The operators removed the flattened insect, stuck it with adhesive tape in a technical journal with an accompanying entry, and only after that restarted the computer.

The mechanical nature of this machine made it particularly vulnerable to insect interference. Most of the early computers, such as the ENIAC ("Electronic Numerical Integrator and Computer") at the University of Pennsylvania, were already electronic and used special vacuum tubes to protect against moths.

But did the term "bug" really come from the Harvard incident? Answer: no. In the meaning of "error" or "failure" in a particular mechanism, the word was used back in the 1889th century. The Oxford English Dictionary quotes an 1943 newspaper report about how Thomas Edison "was up for the last two nights trying to find a 'bug' in his phonograph." The XNUMX edition of Webster's Dictionary also gives the word "bug" in its modern sense.

Despite what numerous websites and books tell us, the term "debugging" was used long before the Harvard moth stalled the move of things.

Quite a telling example: life imitates language - a revived metaphor, literally.

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Gold poisoning 13.10.2010

French scientists, having analyzed a lock of hair of Diane de Poitiers (1499-1566), an omnipotent courtesan at the courts of two French kings, found a large amount of gold in her hair - 500 times higher than the norm.

The surviving memoirs of the time report that Diana drank a dose of the "elixir of youth" every morning, an expensive medicine potion, consisting mainly of gold chloride.

The authors of the study believe that chronic gold poisoning brought her to the grave - after all, this is one of the dangerous heavy metals. The hair of the courtesan's curl, preserved in the castle that belonged to her, is characterized by increased brittleness - one of the symptoms of such poisoning.

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