Science & Technology

50, 100, 150 years ago: March 2021

1971

1971 inpatient treatment

“Treatment of mental illness in the United States has changed significantly over the last two decades. One change that is not well known to anyone but mental health professionals is the development of a treatment called the Therapeutic Community. The term hospital Describes how to operate a small psychiatric unit. Ideally, the unit has 20-40 patients. Large hospitals may have multiple therapeutic communities. An important component of the method is the close relationship between staff and patients who share the work and activities of the unit and participate in decisions that influence the unit. “

Holiday card politics

“The pattern of people sending and receiving Christmas cards can be explained in terms of certain social characteristics, especially their social status and aspirations for mobility.” This hypothesis developed by Sheila K. Johnson Currently moderately field tested by her transaction.. Mrs. Johnson divides all Christmas cards into three groups: (1) mutual, (2) sent but not received, (3) received but not sent. Mutual exchanges are exchanged with relatives and friends of similar social status. However, we also send cards to people who have never sent a card but want to raise it, and receive cards from people who have never sent a card but want to raise it. The graduate student reported that 70% of his cards were mutual, 30% were sent upwards, and nothing was received from below. “

1921

Fighting crime

“The three bank robbers were routed by mustard gas at a bank in Michigan. As a precaution against thieves, a gas tube was placed in the bank’s vault a few days ago. Jegman blew the door. When the tube burst, the thief ran away, leaving behind them 85 cents of his own money and a kit of expensive thief tools. It took hours before he could safely enter the building. Only the first door of the large vault was blown away, and the escaped gas defeated Jegmen’s purpose. “

Earth era

“Abbe Theodore Morrow, director of the Bourges Observatory, recently gave some estimates of the age of the Earth and when life phenomena appeared on Earth. He said that he was 500 million years old, suitable for the age of the Earth. I think that the temperature has dropped to the point where life could exist about 250 million years ago, because humans are relatively newcomers and Abbe has given them only tens of thousands of years. It refutes the estimates of German scientists who recently gave 400,000 years as a possible period for human emergence. “

1871

Breeding of medicated leeches

“The universal use of leeches in surgery places great importance on the breeding of leeches in some places where leeches are grown. In France, they are targeted for cultivation. Near Bordeaux. Hundreds of thousands of leeches are bred in the land, and wasteful dying cattle are placed in swamps and nourished. Leeches are used preferentially for this purpose. When a poor leech bleeds, she is driven to a meadow with good food and recovers rapidly to provide a fresh supply, but the cows and donkeys sink under the leech’s attack. Beautiful. Residents of the countries around Arcachon Bay follow most of the deal, sending 1.5 million leeches to Bordeaux each year. “

Baby power

“The achievement of the present invention, the application of baby power to the washing machine, belongs to John Hiberger of Sharpsburg, Maryland, in a unique way as shown in the attached engraving. Was patented a while ago. The side ribbed tank is for holding clothes, water and soap. The clothes are washed by the vibration of the locking chair and the burger is as shown. Locking is done by the hands of the operator who holds it. This plan to harness the power of the baby is certainly novel and will definitely be interesting to the operator. “

By 1875, there were approximately 2,000 patents for hand-cranked washing machines in the United States...

50, 100, 150 years ago: March 2021

https://www.scientificamerican.com/article/50-100-150-years-ago-march-2021/ 50, 100, 150 years ago: March 2021

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