What are radiation Dosimeters?

[@ForbiddTV]

For a more detailed report on dosimeters done four years later go here: kzbin.info/www/bejne/iqS3ooqvrd-lpZY

[@anshuyadav-eo8ll]

Can you tell about something condenser chamber

[@KrillMister57]

All my questions about this specific modell answered. Couldn’t find anything anywhere on these. Thanks man! Super video!

[@ForbiddTV]

I have a much more thorough video on dosimeters here: kzbin.info/www/bejne/iqS3ooqvrd-lpZY

[@therichtershow]

very quick and well explained!

[@ForbiddTV]

Glad you liked it

[@Bobster986]

I just saw one on the TV show, Quincy, M.E. he hasn't looked into it but it was shown and explained.

[@LMayB1213]

Great explanation. I have to say growing up with the threat of nuclear war was quite terrifying. Something that the younger generation could never understand..

[@ForbiddTV]

Duck and Cover vs active shooter drills.

[@CrispyStrahan]

@@ForbiddTV I don’t think ducking and covering would do too much 😅

[@ForbiddTV]

Just call FEMA when you see that flash of light then. Laugh at your own peril. kzbin.info/www/bejne/i4DQgJh3hdOqrK8

[@cubic_regent]

well that might change with the current russian invasion of ukraine. hope not though.

[@fpvsky2887]

Thanks for the video but you might add you might add what the actual dangerous doses are to your next video

[@williamadams5472]

Very good information

[@DeathofRats09Gaming]

I didn't know about a dosimeter till playing the bunker when you use one

[@TheRogueRockhound]

Great explanation sir, thanks! I have the Radiation Detector RD 108D (Canadian Admiral Corp) kit and cant find an instruction video, did you make one yet?

[@ForbiddTV]

I have several of these but have no manual either. I really only do videos about US equipment.

[@TheRogueRockhound]

@@ForbiddTV Thanks, maybe you could do a vid on those because they seem pretty common. Cheers!

[@abominatedfilms2970]

I have a finnish fennec DC-2. Could they all have the same kind of working purpose?

[@ForbiddTV]

Sorry I don't have any familiarity with that model. Doing a Google search doesn't even bring it up for me to see what it is.

[@chrisimbee4329]

these pen dosimeters not just measure Gamma rays exposition but also Xrays.

[@ForbiddTV]

Chris Imbee Yes they do, but for Civil Defense purposes they were not concerned about xrays.

[@pictures4urears]

1:35 I don't think Chris Imbee even watched the whole video where the guy said x-rays.

[@phillipeagerton1872]

How do you use them, from start to finish and what is safe and what is dangerous?

[@ForbiddTV]

I have plans on making a much more definitive dosimeter video in the next couple of weeks since there isn't much knowledge about them on KZbin. Stay tuned. In the meantime here are US Civil Defense guidelines: Less than 50R no visible effects. 50-200R acute radiation sickness will occur, but will recover if treated. 450R 50% deaths expected. 600R 100% deaths expected within two weeks.

[@ForbiddTV]

Phillip Eagerton kzbin.info/www/bejne/iqS3ooqvrd-lpZY

[@User1346ihgrf]

Super video! Thanks!

[@mikemuha7537]

We used them in the Navy.

[@waynethebrain1984]

In England we go to our sheds. In the USA it's a full nuke shelter.

[@StarwolfTsuname]

I recently purchased a CDV-742 Dosimeter pen for a historical collection, checking the scale upon receiving the item the needle is set at 150r. I haven't received a charger box yet to reset, but what is or is there a danger of contamination if the pen reading is at that level?

[@ForbiddTV]

No, I have thousands of these and whether they are at zero or completely off the scale, no damage to the dosimeter. Since we haven't had 150R exposure in the 60 years since that was built, it's a false reading. See my long dosimeter video for more info. kzbin.info/www/bejne/iqS3ooqvrd-lpZY

[@OverlandTT]

How would I reset a wrist mounted dosimeter?

[@ForbiddTV]

More than likely you won't be able to read it or reset it, but I really don't know what model you are talking about. In my newest video I show a quick demonstration with a PDR-75 near the end of the video: kzbin.info/www/bejne/iqS3ooqvrd-lpZY

[@Freethought2.0]

I know this is for radiation exposure, but I wish there was a disease equivalent to see if someone was exposed to COVID-19 and what level of exposure.

[@nyolcvankilenc1952]

Hello Craig, I have a question regarding three dosimeters I just recently bought on eBay. When they first arrived I checked them to see how much gamma radiation they accumulated. one of them had 20 roentgens, and the other two had no bar going perpendicular to the bar going horizontally. So when I went to reset the first one the bar going vertically to the bar going horizontally disappeared. And in one week they haven't reappeared. I have tested placing the dosimeters near radioactive objects like uranium ore, and some radium check sources, but I can't seem to bring the vertical lines back, are my dosimeters broken?

[@ForbiddTV]

+Lord Dubious 22 It doesn't sound like you are using the dosimeter charger correctly (or it isn't working properly). Also, the dosimeters you are using sounds like they are likely the 200R range and you wouldn't have anything hot enough to make those needles move. The fact that the needles were off scale or reading 20R isn't due to radiation, it is due to drifting of the reticle. After resetting, as long as the reticle hasn't moved in about a day (I observe drift after a week when I test them and if they haven't drifted in a week I deem them without perceivable drift), the drift is of no concern. They aren't for long duration measurements.

[@nyolcvankilenc1952]

ForbiddTV I am using the 200R dosimeters, they are the CD V-742 models. But I watched a KZbin tutorial on how to operate the dosimeter charger, I put the D-cell battery in first, then I held the dosimeter down on the charger connect, and then the vertical line disappeared.

[@nyolcvankilenc1952]

Hey I fixed the problem. It turns out the vertical hair line was out of frame. sorry to bother you :/

[@aperion8464]

As i see, video includes contradictiory information. first of all , you said that it measures only gamma, but after that said measures x ray also, which is correct? Which type detectors are capable of get to difference between gamma and x rays. Until now, i didnt hear any detectors understanding to differences in the nuclear area

[@ForbiddTV]

You would be hard pressed to find a detector that detects only X ray or only gamma rays.

[@fico8400]

how long does one last without charging?

[@ForbiddTV]

Fico Х0Х :з That's not how they work. Anything more than about a day is not their intended use. Ideally they should be charged (zeroed) right before use. "Holding a charge" generally only means the drifting is so low that the reticle stays put for long periods of time. But a long term reading (anything over about a day) isn't going to be a reliable reading. A more detailed dosimeter video I did: kzbin.info/www/bejne/iqS3ooqvrd-lpZY

[@WingsandRails5893]

When my dad worked at a nuclear power plant he wore a film bagde and a dosimeter pen.

[@ForbiddTV]

Today the analog dosimeter might be replaced with an electronic one, but is essentially the same idea.

[@WingsandRails5893]

@@ForbiddTV I'm talking back in the 80's.

[@WingsandRails5893]

@@ForbiddTV Also will the CDV dosimeter pens read background radiation?

[@ForbiddTV]

No. Even a 200mR will not accurately read background radiation. It wouldn't visibly budge in a week and dosimeters aren't really designed to be accurately used for more than about a day because all dksimeters can drift over time.

[@ForbiddTV]

FlightSim Hobbyist kzbin.info/www/bejne/iqS3ooqvrd-lpZY

[@Lretrotech]

are these reusable?

[@ForbiddTV]

You didn't watch the whole video. I talked about it and showed some chargers starting at 2:30. I also linked to a much more detailed video I did in the description box. kzbin.info/www/bejne/iqS3ooqvrd-lpZY

[@Lretrotech]

@@ForbiddTV sorry about that 😅. thanks for the explanation. I’m starting a project to integrate a dosimeter as an accessory because I often work around radioactive materials.

[@ForbiddTV]

For your job? Most countries have agencies that would regulate that, OSHA in the US. In the US you would have a film badge for lower risk exposure potential that would get exchanged quarterly, and a 200mR dosimeter (usually electronic these days) that gets changed out with each working shift if you are at higher risk. If you get any dosimeter you would want the most sensitive you can find (200mR) and even then you won't find anything unless there is a problem.

[@Lretrotech]

@@ForbiddTV i’m a hobbyist but i’m aware of the proper correction labels and I have them for my exposed equipment and sources. thanks for your concern!

[@omkr0122]

3.6 Roentgens. Not great not Terrible

[@DMF716]

Hay Craig! I decided to experiment with a bad dosimeter, where the needle would loose voltage quickly. Like within a minute! So thinking about a NICAD battery, that gets a memory. I tried this experiment. I charged the dosimeter several times, setting it to zero. It leaked fast. 0-40, in under 1 minute. So next I set it to 200 and slowly brought it back to zero. Now, the manual says the 1.5 volt battery charges the dosimeter between 220 volts? So, if 0 = 220 volts AC, then what voltage is to the left of zero? Is it like volting a nicad battery?(Depleting the charge all the way, then recharging?) So, I took it to the left of zero, and took the pointer near the edge of the glass...it suddenly started to discharge slower. I have now done it several times, and it appears to be working and getting a leaky dosimeter working again. Give it a shot and post what happens. Be nice if I can get a leaky dosimeter back to 100% working.

[@ForbiddTV]

Thanks for posting the results of your experiment.

[@debra4bees]

My dad had a kit with these and fishing line in the kit. What would the fishing line be for? Hanging out around your neck?

[@ForbiddTV]

Maybe for fishing.

[@jpol1439]

Can they detect radon in a basement or is that a different kind of radiation that requires a special meter?

[@ForbiddTV]

J Pol Dosimeters are for Gamma and X-Ray only. Radon is Alpha and would need a detector specifically for alpha: kzbin.info/www/bejne/rH3MZmqgirt6oM0

[@DMASTERCRAFTER]

I subscribed. I have always had a fascination with radioactivity, although I am only 12. Do you do this for a living, or is this a hobby?

[@ForbiddTV]

D_MASTER CRAFTER Radiation detection is my career. I am the only one in the US selling radiation detection equipment at trade shows all over the country.

[@annelieseocallaghan801]

What a fascinating career.

[@evinmaguire7878]

They do show them in movies! A LOT of Star Wars characters wear them in their pockets as props. They don't ever mention them though...

[@ForbiddTV]

They aren't even used as dosimeters in Star Wars. They perform some sort of security clearance function in the movie. The higher your rank, the more security clearance you have.

[@kightremin]

So not for medical use

[@ForbiddTV]

Why so? Some occupations still require their use.

[@kightremin]

@@ForbiddTV You said it detects gamma-ray so it is optimized more towards the industry use. I believe doctors would need detectors for both x and gamma. Correct me if I think wrong

[@ForbiddTV]

@@kightremin I think I very clearly state they detect gamma and X-rays in the video. That's what dosimeters detect.

[@leefuller943]

Hmmm... Mine reads 120! yikes

[@ForbiddTV]

That just means it has drifted since last set. You didn't receive that much radiation.

[@danielmorris9803]

What's best to use to find out if my fish is radioactive from fukushima in my supermarkets in Britain please would this be any good GM3120 Digital LCD Electromagnetic Radiation Detector EMF Meter Dosimeter This meter can test electric field radiation and magnetic field emission to reach the optimal test result. It is used to test and learn electromagnetic radiation situation indoor and outdoor. It is equipped with a built-in electromagnetic radiation sensor, which can display the radiation value on the LCD digital display after processing by control micro-chip. Features: One instrument with two uses, it can test the electric field and the magnetic field radiation at the same time. Sound-light alarm, when the test result exceeds the safe value, the instrument will alarm automatically. Data locking, one-key lock of the radiation value. LCD display of the values for easier reading. Radiation assessment, remind you whether the radiation value is safe or not. Fashionable design, easy on-hand operation, it's easy to carry and make field measurement. Specifications: Color：Orange + Black Material: Plastic Unit: V/m (Electric Field); μT(Magnetic Field) Accuracy: Electric: 1V/m; Magnetic: 0.01μT Range: Electric: 1-1999V/m; Magnetic: 0.01-19.99μT Alarm Threshold: Electric: 40V/m; Magnetic: 0.4μT Display: 3-1/2 LCD Display Test Bandwidth: 5Hz-3500MHz Sampling Time: Approx. 0.4 Seconds Test Mode: Bimodule Synchronous Test Over Range Indication: LCD Displays "1" Operating Temperature: 0°C-50°C Operating Humidity: Relative Humidity

[@ForbiddTV]

Daniel Morris can use whatever you want, but you are under the false belief that you will find radiation in seafood from Fukushima, which is totally incorrect. No Geiger counter in the world will allow you to detect 'contaminated' fish or seafood. You will need something called a mass spectrometer if you think you are actually going to detect something.

[@danielmorris9803]

ForbiddTV ForbiddTV mess spectrometer OK thank you so much Princes Tina makes me sick Co operative cod same thing.. Really Appreciate your feedback. Love your show well I've been watching since today.. The only thing I know about radiation is charcoal absorbes it

[@petermeuller7355]

Daniel Morris what you wrote about is a HF Detector, it’s for radio frequencies. It has nothing to do with radioactivity at all. You could easily understood that reading what you posted yourself without being an expert.

[@ParkerUAS]

@@danielmorris9803 , I highly r reading more about radiation. While charcoal (carbon) does absorb it, it can also reflect it (graphite doing this is what caused the power surge and explosion at Chernobyl). There are a mul9of types of radiation. Light is radiation, radio waves are radiation. What you should be concerned with is "ionizing radiation". This is radiation with enough power to strip an electron off of an atom. There are different types (Beta, Gamma, X-ray, etc.) each with unique properties. Radiation in the food chain isnt a major concern unless you are getting food from within an exclusion zone. Since 1945, there are radio-nucletides across the planet. However, they are diffuse enough to not be of any real significance. You get more ionizing radiation from just being in sun light. I am not saying you shouldn't be vigilant, just that there are not any significant risks if you are eating local foods in the UK.

[@13anomalous16]

Ok so basically the Chernobyl show on HBO is wrong

[@ForbiddTV]

Since I haven't seen it I couldn't tell you. But usually entertaiment media is wrong about radiation in general.

[@Malamockq]

@@ForbiddTV I don't think it got it wrong, I think they just used different dosimeters in Soviet era Ukraine.

[@ForbiddTV]

cody austin Here's a video I did exposing some of the Hollywood productions relating to radiation: kzbin.info/www/bejne/aXyXiJ-Bl8SGm9E