Date: 2019-11-11 03:00:00
A hundred years ago an opportunity to literally look through a person would seem crazy to scientists and doctors. In fact, the father of X-rays, German physicist Wilhelm Roentgen, discovered them by accident.
But when he was offered to patent his invention, he burst out laughing. He was skeptical about X-rays as he saw no sphere where they could be used. Despite his own attitude towards his discovery, it made a sensation in the scientific community, and the units to measure the amount of X-rays were named after him — Roentgen.
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How X-rays see inside you 0:25
The discovery of X-rays 1:55
Why Wilhelm Roentgen was skeptical about it 3:39
How safe are X-rays? 5:36
The greatest source of radiation 6:22
The most unusual area where X-rays are used 7:23
#howitworks #xray #brightside
– Negatively charged electrons that come off the cathode gain speed and bump into the positively charged anode, where they have to pull up sharp. As a result of this, there appears an X-ray.
– The harder the material is, the slower they will move. That’s why human bones slow down X-rays much more than soft tissues that are 70% water.
– In fact, X-ray pictures are photo negatives, that’s why lighter spots are called “shadows”.
– On November 8, 1895, Roentgen stayed in his laboratory till late at night. When he was going to leave and turned off the light and all the devices he noticed that a bottle with transparent liquid in one of the corners of the laboratory started shining with a green light.
– He got interested in an unusual effect and started researching his casual discovery.
– His hand also got under the strange ray. What Roentgen saw shocked him – he saw the shade of his hand’s bones! He literally was looking through his hand.
– When he was offered to patent his invention, he burst out laughing. He was skeptical about X-rays as he saw no sphere where they could be used.
– He was the first scientist in history to receive a Nobel prize in physics but he never patented his invention and granted it to people.
– More than a hundred years have passed since X-rays were discovered in 1895, but it is still considered one of the most serious breakthroughs in medicine.
– It was not until the second half of the 20th century that X-ray technology was considered not totally safe as it exposes you to radiation. Its effect is different in different body parts.
– The dose of stomach and intestine X-rays is equal to what you can get in 3 years of your common life.
– The Sun is the greatest source of radiation that tries to get to us from space.
– The most unusual area where X-rays are used now is expert evaluation of the authenticity of art pieces. This method was used for the first time 70 years ago and is still the most reliable one.
– X-rays are now widely used in archeology too. When they found scrolls in Pompeii, they were so fragile that any attempt to unfold them would ruin them forever.
– But X-rays helped to read the text written inside the scrolls without unfolding them!
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