Development and use of X-Rays
In 1895, Wilhelm Röntgen was experimenting with a new type of ray which he referred to as “X.” Little did he know that those rays would improve the lives and livelihoods of millions of people in the future. Röntgen discovered the medical application of X-rays when he photographed his wife’s hand, creating the first image of a human body part made by X-rays. The early tubes used to create the rays were very inefficient, but around 1920 a more efficient vacuum tube was invented, making way for wide spread use of X-rays for medical purposes. Today they are used to identify diseases mainly in bone, but also in soft tissue (pneumonia, lung cancer, kidney stones, etc.)
My opinion about X-rays
I think that x-ray is very good thing, because thanks to it we know that our bowns are broken,that our internalorgans are ill and knew it we may heal it. I think that it is biggest discovery in the world.
Advances in blood typing, banking, and transfusion.
Blood transfusion had been experimented with in both humans and animals since the 15th century, many attempts being fatal for both patient and donor. Distinct blood types were first noticed in the 19th century. But both these techniques were not adequately improved for wide-scale use until the early 20th century, when a method of blood banking was established. Separating the plasma from the blood cells allowed for longer storage time and reduced occurrence of reactions. These improvements in blood typing, banking, and transfusion technology save millions of lives in the U.S. alone every year, as 15 million units of blood are transfused annually.
My opinion about blood typing
Discovery of blood typing is serious advance in medicine.Different people have different groups of blood and there is a need blood transfusion after accidents and during the operation.
The development of antibiotics.
Three centuries ago, almost everyone died of infectious diseases. When the plague broke out in 1347, it killed nearly half of Europe–in about two years. When diseases such as smallpox reached North America, they reduced the indigenous population by about 90 percent within a century. As late as 1800, the leading cause of death in the West was tuberculosis. An antibiotic is an agent that either kills or inhibits the growth of a microorganism. The term antibiotic was first used in 1942 by Selman Waksman and his collaborators. In the late 19th century doctors started to use antibiotics healing different types of diseases that caused death before the invention and use of antibiotics.
My opinions about antibiotics
WI think that antibiotic was a one of the best inventions in the world because it saved people and thanks to it we are breathing healthy today. Thanks yo antibiotics people in 20th century were saved.
Vitamins
While vitamins were known to have existed before the 20th century, the only sources of vitamins were certain types of food. This is a problem for groups of people who live in conditions which limit the variety of the food they can eat. For example, crews on a ship would routinely develop scurvy due to Vitamin C deficiency. This was caused by a lack of fruit aboard the ship on especially long journeys. The British began bringing lemons and limes aboard on such journeys (hence the nickname “Limeys,”) and saw a decrease in the cases of scurvy at sea.
My opinion about vitamins
Vitamins are essential for the body to be able to put the nutrients in food to use.Because vitamins are not produced by the body, we have to get them through the food that we also eat.Our bodies need a certain amount of vitamins, which can be provided by eating foods that contain those vitamins.And i think that it is very good thing for us.
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