X-RAY

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작성자서유리 조회 56회 작성일 2022-05-31 16:36:55 댓글 0

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How do X-Rays Work?

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Chances are you've had an X-ray at some point in your life, but did you know this life-saving technology was actually invented by accident? German physicist Wilhelm Roentgen discovered the technology while he was doing experiments with electron beams and gas discharge tubes – you know, like everyone does...

When performing these tests, he noticed that a fluorescent screen in his lab started to glow green while the electron beams were running. This wasn't surprising in its own right, but Roentgen's screen was shielded by heavy cardboard which he thought would block the radiation.

The interesting part of this discovery was that the initial aspect of Roentgen's discovery was simply the existence of some kind of penetrating radiation, but in trying to figure out what was happening, he actually put his hand in between the screen and the electron beam. This created an image of the bones inside of his hand on the screen, revealing X-ray's perfect use immediately after their discovery.

This double discovery marked arguably one of the most important medical advances in all of human history. It gave professionals the ability to see ailments inside the human body without invasive surgery. It even allowed them to see soft tissues with slight modification.

No one questions that X-rays are important to modern medicine, but most people don't have a great idea of what is actually happening when you get one. Let's figure that out...

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t_skp20 : Great video! But there is to mention that the contrast fluid "omniscan" that is shown here is a gadolinium-based contrast agend, which has nothing to do with x ray exams but instead with mri exams. Also, you showed a lot of mri images, which is kind of misleading since there are no x rays used in mri scans. There is already a lot of confusion when it comes to the difference between x ray and mri, so i'd love to see more people getting this right in these kinds of viedos instead of causing more confusion. It's still a nice video though! :)
Cause&Effect : A doctor told me excessive X-rays can also result in bone deterioration, especially if you already have thin or fragile bones.
Edgbaston 149 : Thank you so much. It was really helpful. You're doing a great job
TAHMINA CHOWDHURY : this is an amazing video.. for us students. whoever made this..a trillion thanks from me and all of Bangladesh.
Peter Halliday : fantastic video would love to see more!!

How X-rays see through your skin - Ge Wang

View full lesson: http://ed.ted.com/lessons/how-x-rays-see-through-your-skin-ge-wang

Originally discovered by accident, X-rays are now used about 100 million times a year in clinics around the world. How do these magic eyes work? Ge Wang details the history and mechanics of the X-ray machine and CT scanners.

Lesson by Ge Wang, animation by Pink Kong Studios.
magojiro kusanagi : Why dont you guys just build a school? :)
Hriday Mehta : I love how back in the day people could make groundbreaking nobel prizeworthy discoveries just by carrying out everyday chores . Good times
Reginald Finley : So when Superman is scanning people using his x-ray vision, he's creating mutations in people. Way to go Superman. :-)
F M : This is the best video I have seen, so clear in the explanation. Please do more
Gleb Kuzmin : Well explained! :) Small correction: Gamma rays and X rays overlap in energies (you can have X rays with higher energies than some gamma rays). The difference between gamma rays and X-rays is how they are produced (gamma rays: emitted from the nucleus, X-rays produced in the "electron cloud").

Things Found In An X Ray

Things Found In An X Ray
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Mirage IIIC : X-rays are just so cool having the ability to just look inside someone to easier help them with their conditions its just frankly amazing
David Ross : The thing about the fire extinguisher not being full is kind of like chips in that their respective containers are usually filled to the top, the contents just settle over time. I learned firefighting in the Navy, and we had to routinely go around to all extinguishers, turn them upside down, and beat the bottom with a rubber mallet to knock the powder loose from the bottom and fluff it up. You need to do that to all dry extinguishers, even the little home ones, because each little bump and jostle it gets while upright, the more it settles the powder until over time it's a hard compacted cake and it can clog the pick-up tube and not spray out when you need it. Just a little something that could save someone's something someday. :-)
John Parker : They weren't ripped off with the fire extinguisher just because it's not full to the top. There has to be head space for the gas that pushes the powder out when the handle is pulled. Without the gas, you have a 10 lb. paper weight.
Aphelion : I know someone who is a radiologist and every time I see them they always talk about how messed up people who’ve had covid’s lungs are (even after they’ve long recovered) she always describes them as having spider webs in their lungs.
J610 : This person clearly has a lot going on. Best of wishes to the person with the rarest combination of unique medical conditions in history.

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#X-RAY

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