How the X-ray Machine Works & Was Invented: from Hertz to Lenard
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He was born in Massachusetts but being a royalist fought against the American patriots (the rotten scoundrel) left after Independence and abandoned his wife (the rotten scoundrel. Kept discovering things, invented a soup for the poor, designed a beer garden for the public, hired Humphry Davy, married Antoine Lavoisier's widow, argued with her all the time while making fun of Lavoisier's mistakes in thermodynamics (the rotten scoundrel, took the name Rumford from a town in New Hampshire. Whew!
Date: 2022-12-27
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Comments and reviews: 8
mike
A fellow student and myself found an old, cold cathode style, x-ray tube in the store room for the physics lab. This was during the spring of 1964 and we were both seniors.
Our physics class was during the last period of the school day so hanging around after class was normal.
Our teacher was brand new and had graduated the previous year with his BS in physics from a local college.
After doing some research my friend and I convinced the teach to let us see if we could get the x-ray tube to work. We found an old transformer from a neon sign the was rated at 18KV. We hooked it up through a 1B3 high voltage rectifier tube from an old B&W television. We powered the filament on the 1B3 with a 1. 5V D cell battery.
After completing the wiring and doing a smoke test, we connected the leads from our power supply to the x-ray tube and powered it up. We had a geiger counter near the tube and it immediately reacted. However, we were not sure it it was really making x-ray so we tried putting a piece of 4x5 photographic film in an envelope and exposed it with a keyring on top of the bag.
When we developed the film is was clear - and no exposure evident. Further investigation revealed the Kodak's Tri-X film is not really sensitive to x-rays.
Next we tried putting a piece of fluorescing paper in the bag with a fresh sheet of film and repeated the experiment.
This time upon developing the film we could clearly see the desired image.
Needless to say, the teacher was impressed that it worked. We both got As on the course.
reply
A fellow student and myself found an old, cold cathode style, x-ray tube in the store room for the physics lab. This was during the spring of 1964 and we were both seniors.
Our physics class was during the last period of the school day so hanging around after class was normal.
Our teacher was brand new and had graduated the previous year with his BS in physics from a local college.
After doing some research my friend and I convinced the teach to let us see if we could get the x-ray tube to work. We found an old transformer from a neon sign the was rated at 18KV. We hooked it up through a 1B3 high voltage rectifier tube from an old B&W television. We powered the filament on the 1B3 with a 1. 5V D cell battery.
After completing the wiring and doing a smoke test, we connected the leads from our power supply to the x-ray tube and powered it up. We had a geiger counter near the tube and it immediately reacted. However, we were not sure it it was really making x-ray so we tried putting a piece of 4x5 photographic film in an envelope and exposed it with a keyring on top of the bag.
When we developed the film is was clear - and no exposure evident. Further investigation revealed the Kodak's Tri-X film is not really sensitive to x-rays.
Next we tried putting a piece of fluorescing paper in the bag with a fresh sheet of film and repeated the experiment.
This time upon developing the film we could clearly see the desired image.
Needless to say, the teacher was impressed that it worked. We both got As on the course.
reply
Allan
I just had to ask: at 10: 30 you have three pictures to go with the voice over of the three men who created X-rays unknowingly. The three captions all say X-Ray of, and the first two are actual X-ray pictures. But the third caption, Tesla, X-ray of a nut, is over a regular photograph of Tesla himself!
Is this a bit of sarcasm, or did you not have an actual X-ray of a nut! If the former, it is brilliant!
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I just had to ask: at 10: 30 you have three pictures to go with the voice over of the three men who created X-rays unknowingly. The three captions all say X-Ray of, and the first two are actual X-ray pictures. But the third caption, Tesla, X-ray of a nut, is over a regular photograph of Tesla himself!
Is this a bit of sarcasm, or did you not have an actual X-ray of a nut! If the former, it is brilliant!
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Ross
Kathy, you mentioned elsewhere Hertz was given a house which was contaminated and that may have led to his early death. I'm wondering how much radiation Hertz was exposed to during his researches and whether or not that may have been an ingredient in his mysterious malaise.
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Kathy, you mentioned elsewhere Hertz was given a house which was contaminated and that may have led to his early death. I'm wondering how much radiation Hertz was exposed to during his researches and whether or not that may have been an ingredient in his mysterious malaise.
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kEYBAWD
Just one more in the chorus of praise that I see you are receiving in the comments section. Another totally absorbing human story carrying the physics with it. I intend to watch ALL your videos. Thank you.
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Just one more in the chorus of praise that I see you are receiving in the comments section. Another totally absorbing human story carrying the physics with it. I intend to watch ALL your videos. Thank you.
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looksintolasers
I'm systematically watching every one of your videos. The physics is right and I love having these vaguely familiar names from science history brought to life.
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I'm systematically watching every one of your videos. The physics is right and I love having these vaguely familiar names from science history brought to life.
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Scanogram
I recently retired after 35 years of fixing x-ray machines. I now have time to watch videos. Thanks for the history, I'm still learning new things.
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I recently retired after 35 years of fixing x-ray machines. I now have time to watch videos. Thanks for the history, I'm still learning new things.
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dotan
great work. there is this unknown figure. christian birkeland. i think he is parallel with the other great mindes of electricity.
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great work. there is this unknown figure. christian birkeland. i think he is parallel with the other great mindes of electricity.
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amir
It was a clear explanation of many contributions in cathode tube in a distinguished way and find out who did exactly what.
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It was a clear explanation of many contributions in cathode tube in a distinguished way and find out who did exactly what.
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