1940 and X Rays were already in widespread medical and industrial use. This short documentary is presented by one of the inventors of the hot cathode X-Ray tube, William D Coolidge.
Video Rating: 4 / 5
Feb
09
1940 X Ray Physics Documentary By William D Coolidge
25 comments
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TheKcsmithy says:
February 9, 2012 at 1:36 pm (UTC 0)
interesting video and very informative
jayejayeee says:
February 9, 2012 at 1:44 pm (UTC 0)
good work here
thegeffc says:
February 9, 2012 at 2:30 pm (UTC 0)
i enjoyed this vid
distractionxx says:
February 9, 2012 at 3:22 pm (UTC 0)
love the video really good
jjjeahh says:
February 9, 2012 at 3:56 pm (UTC 0)
lol I’m using this to make vocal samples for dubstep.
0000794 says:
February 9, 2012 at 4:52 pm (UTC 0)
<3 it !!
SeniorThe12 says:
February 9, 2012 at 4:58 pm (UTC 0)
7:03 AN IPAD??!!!!!!!WHHAAAT?
buddhafollower says:
February 9, 2012 at 5:18 pm (UTC 0)
liars! the eniac was invented by the germans. they said that it has been built by mauchly and eckert, but that s not true. and also, i would not be surprised to find out that they had faked the inventor of hot cathode x ray tube also.
MrSawler says:
February 9, 2012 at 5:47 pm (UTC 0)
Pouce vert pour tous ceux qui regardent cette vidéo à cause d’un exo dans le livre de Physique-Chimie !
katt2002 says:
February 9, 2012 at 6:18 pm (UTC 0)
@jonahansen
people of that era were still not aware of the hazards and effects of radioactivity to human.
ffxikentaru says:
February 9, 2012 at 6:59 pm (UTC 0)
recordinational DE-VISE!
EXO903 says:
February 9, 2012 at 7:12 pm (UTC 0)
thumbs up if you saw the hole film
USFullOfLies says:
February 9, 2012 at 7:25 pm (UTC 0)
@RespectMyHate
radioactivity.
ooaremu says:
February 9, 2012 at 7:31 pm (UTC 0)
@raz07basnet your bones are alot more dense thatn you muscle and flesh.. what you see in an X-ray is the change in density picture.
RespectMyHate says:
February 9, 2012 at 7:43 pm (UTC 0)
@Op3rationMongoose Thanks that makes me feel better.
Op3rationMongoose says:
February 9, 2012 at 8:38 pm (UTC 0)
@RespectMyHate the intensity and duration of x-rays used in medical practice aren’t significant, provided you aren’t being exposed to them every day. Chest x-rays and CT scans are the most powerful radiographs, in terms of dosage. But they’re still quite safe. Everyone has an annual dose limit, it’s an international standard.
raz07basnet says:
February 9, 2012 at 9:18 pm (UTC 0)
why the x-rays don’t penetrate the bones but easily penetrate the muscles or flesh
RespectMyHate says:
February 9, 2012 at 9:56 pm (UTC 0)
how dangerous are x rays?
Nicholasdude187 says:
February 9, 2012 at 10:36 pm (UTC 0)
@boxa888 No offence your english is so bad I could barly understand you.
jonahansen says:
February 9, 2012 at 10:47 pm (UTC 0)
I guess he wasn’t too concerned about his exposure to ionizing radiation, the way he stuck his hand in there.
ParaglidingManiac says:
February 9, 2012 at 11:32 pm (UTC 0)
brilliant minds.
Miyokorika says:
February 9, 2012 at 11:37 pm (UTC 0)
Yes sir, we run 25Mv for a long period since we do energy and profile scans. Its over 81% slope (10 cm depth water, 10 by 10cm field size at 100cm. On Mevatron machines it uses a gold carbide target and this becomes radioactive (when running above 15Mv) for a certain period that we add an aluminum (10mm thick) absorber when this energy is selected. We can smell the ozone in the head (like a burning sugar) just after running 25Mv.
leftyelysium says:
February 9, 2012 at 11:56 pm (UTC 0)
@geramtec Where are you running 25Mev for long periods of time? That’s alot of penetration.
thedjtwilight says:
February 10, 2012 at 12:04 am (UTC 0)
Ayinozendy, the negative effects of radiation were discovered within 9 years of their discovery by Thomas Edison. He was the first inventor to develop fluoroscopy, and he experimented on his assistant, a man named Clarence Daly.
Because the effects of radiation take time to reveal themselves, Clarence’s condition was a forgone conclusion by the time his “burns” surfaced. These eventually turned cancerous, and he had to have his entire arm removed, and died shortly there after from the gross r
ayinozendy says:
February 10, 2012 at 12:30 am (UTC 0)
I didn’t hear him talk about the effects of the X-ray on health. Is it that health effects have not been discovered/studied on that time, or maybe it was discovered but not made public? I need enlightenment please…