I think TH-cam shorts are usually like TikToks, not like this video by Mr Messier. I enjoyed watching it a lot! I don't like TikTok style videos though. 🌈
Gilles I have to give it to you: your historical content is outstanding! I love this channel bc your are also a good presenter, not only a talented writer! :)
I recently toured the Battleship USS Missouri. I saw one of those emergency radios that you spoke of, and the axes in the classified room. This channel is better than most history programs and should be mandatory for students learning history.
I’ve got a Lovibond comparator, similar principal, but it uses natural light and solid tablet reagents. You can get a variety of colour wheel and reagent combinations to measure a range of parameters. I used it for measuring residual chlorine for assurance in temporary water supplies I built for events. It gives a quick result in the field. We used additional lab sampling for coliforms and other bac testing.
It is very similar to the kits sold for swimming pools, but without the added complexity of the box and eyepiece. The swimming pool kit has the same chemicals and a chart you compare the solutions to after adding the indicator solutions.
Very true, but they have rather different conditions for use. Being military issue these were intended to be more than a little bit more durable than the plastic those are usually made from and this can be used any time of day.
More modern versions used packets of methyl orange added to test water to compare against a graduated colour wheel. The reagent solution absorbs the free chlorine with consequent pH colour changes. CL2 increases as the test solution gets redder. An invaluable but simple tool I have used in mining camps in years past. Good job Gilles!
When I started my career in water treatment in 1974 I used a comparator similar to this one. The difference being that it did not have the light. Illumination was accomplished by pointing it at a light source such as lamp or the sky. The major drawback with orthotolidine was that it only measured total chlorine and these units fell out of use as requirements for monitoring the free chlorine throughout the system. There was a supposed work around in which the operator was to inject the reagent into the sample already in the comparator taking a reading as quickly as possible and then wait a set time for the total total treading from the difference of the two readings one was supposed to get an idea off what the free and total chlorine was. The DPD (I won't even try to write out the the full compound name) method soon arrived on the seen that had species specific reagents that took the fumbling and guess work away. Yes Wallace & Tiernan made some very nice stuff, and it's a bit sad to see a company that paved the way to be lost in the world of mergers and acquisitions. I thoroughly enjoy your work Dave
During a class called 'Materials and Processes of Photography' at the Rochester Institute of Technology, we used a comparitor system for determining density of photographic materials. Much less sensitive than electronic photomultiplier devices, they provided acceptable analysis of film densities.
I've lived most of my life in the San Fernando Valley of Los Angeles, and grew up with a backyard swimming pool. My dad had a chlorine residual and pH test kit with bottles of chemical, a clear plastic tube for water, into which the chemicals were (separately) dropped, and a clear plastic square with circles of color to compare the color of the treated water in the tube. He held the tube of treated water and the square up for sunlight to shine through and compare the colors. The same sort of thing but simpler. From time to time the color square needed to be replaced as the colors fade.
Anyone with an aquarium will recognize the color matching ph test. This is done by swishing a test strip in the water and waiting a few moments to match the resulting color to a chart. Though Im sure there are also liquid reagent test probably more accurate.
Interesting. This video reminds me of a book I read on hydroponics, where in the book it mentions the ideal ph of water should be around 5.5 and 6.5 for most plants. However I was doing pool service at the time and ideal they said about 7.5 and up was ideal ph. The book mentions devices that can measure pH and devices that measure the water hardness / what minerals were likely most present in your water (copper, zinc, magnesium, etc). I don't know how old those later devices were invented but I think it would make for a good follow-up video and or topic idea.
I have a similar device but for radiological testing, cold war era Polish military. the colours are just different shades of pink though. not actually looked into the chemistry it uses that closely but it does have the glass ampules with said chemicals in them that would change colour when exposed to radiation, seems you can still pick the units up relatively easily on eBay and the like.
With a printed chart, you're trying to compare the colour of reflected light to the colour of transmitted light. But with this device, you are comparing two beams of transmitted light. Some people just find the like-for-like comparison easier. I guess the built-in light source is not so you can test water samples in the dark, but a way to try to guarantee a fairly consistent brightness for comparison. This would be especially important for field testing in all weathers -- you don't want false readings on super bright or overcast days.
Well, what I might suggest is that this device, despite the Olive Green color might not be military issue. 💁 For some reason various manufacturers of random devices selected the Olive Drabe color for the paint. My parents had a slide projector in Olive green. 🤔 I can’t really say why. Surplus paint maybe?
TH-cam put an AI audio track in this video dubbed in Portuguese (I'm Brazilian) and I can't find where the hell to deactivate this, I watch all videos in English no problem, why would I want to watch something dubbed by AI 🤢
FWIW: I have been having problems with comments I post under videos DISAPPEARING IMMEDIATELY. It started happening, then it stopped, then it started happening again, now it seems to have stopped {again}. I do not know if this was 'collateral damage' from the A.I. thing or not, but I suspect it was...🤦♂️
I'm not that jazzed about putting AI assist anywhere regardless of whether it fits or not, but AI dubs might be a solid accessibility improvement - someone who doesn't know English well enough and can't use the subtitles for some reason (side note: bit weird that there are multiple auto-generated audio tracks available and only one option for subtitles) can still enjoy the content. Why TH-cam decided to set the dubbed audio as the default one is a whole other issue:D You can change the audio track in the settings (the cog ⚙icon in the player) :)
Looks like it's dipped in blue die to block some of the reds. The fact that it is incandescent means it has a continuous spectrum, so it won't really matter if the batteries die down and it moves towards yellow. You are comparing the two colours that are both illuminated by the same light source, so the overall lamp colour is not particularly important.
reminds me of "pool PH / Chlorine testkiits that are similar whereas you add the water into 2 tubes side-by-side and then add the chemicals (couple drops per tube) and compare the color to pre-determined sealed tubes positioned adjacent to each tube with calibrated numbered markings per tube... (though its been so long since I USED this thing, that I completely FORGOT what the markings were and how to read them! - I also tried to find an image of such testkits but Google has become a NAZI about links to images and I can find NOTHING that doesn't generate TONS of ADs!)
@@haywoodyoudome very constructive (not)... thanks anyway, sorry for the typo... Still, I´ll stick with perfecting my knowledge over real languages, no time for rubbish... If I ever feel the need to sound brain-dead, then, I´ll perfect my English, promised...
Interesting.This made me curious to look up when PH test strips were first made. They didnt come into common use until the 50s,so these types of machines were probably the main tools for testing for some years. Minor side note: i've used PH test strips for many decades with success and recently tried versions that test for chlorine content.Those were somehow utterly useless,not working at all! Go figure
As someone who knows nothing about anything,itd be neat for you to make up alternate history for thse types of things,and then jist put out a real video later.Will double your content output,and make for laughs along the way.
"Have you ever been to a concert and seen a light display with a rotating color gel wheel on a disco ball? Sit back and enjoy the strange origin of them."
" As someone who knows nothing about anything " your here and now know something, I think you may like "Technology connections " don't be a stranger and drop in for more somethings. Best
This is the proper way to make a TH-cam short (make a regular video and put "SHORT:" in the title).
It was a pleasant surprise to discover it's actually a long short 😊
I think TH-cam shorts are usually like TikToks, not like this video by Mr Messier. I enjoyed watching it a lot! I don't like TikTok style videos though. 🌈
While the content itself is great, his dancing is uninteresting at best, and whatever song he was lip-sync'ing to is too obscure for me even to find.
@@Curt_Sampson aaand he needs to show more skin tbh.
Yep. Filminv vertically is a crime
Gilles I have to give it to you: your historical content is outstanding!
I love this channel bc your are also a good presenter, not only a talented writer! :)
I recently toured the Battleship USS Missouri. I saw one of those emergency radios that you spoke of, and the axes in the classified room. This channel is better than most history programs and should be mandatory for students learning history.
This is one channel where I really love the short content AND the long content.
I’ve got a Lovibond comparator, similar principal, but it uses natural light and solid tablet reagents. You can get a variety of colour wheel and reagent combinations to measure a range of parameters.
I used it for measuring residual chlorine for assurance in temporary water supplies I built for events. It gives a quick result in the field.
We used additional lab sampling for coliforms and other bac testing.
There is also a comparator for measuring the Hazen of water, or how clear it is.
Natural light travels through water or a graded disk
It is very similar to the kits sold for swimming pools, but without the added complexity of the box and eyepiece.
The swimming pool kit has the same chemicals and a chart you compare the solutions to after adding the indicator solutions.
Very true, but they have rather different conditions for use. Being military issue these were intended to be more than a little bit more durable than the plastic those are usually made from and this can be used any time of day.
@@alexsis1778 True, but the function and principals are all the same from then to today.
More modern versions used packets of methyl orange added to test water to compare against a graduated colour wheel. The reagent solution absorbs the free chlorine with consequent pH colour changes. CL2 increases as the test solution gets redder. An invaluable but simple tool I have used in mining camps in years past. Good job Gilles!
the only kinda short i'll watch on TH-cam these days
When I started my career in water treatment in 1974 I used a comparator similar to this one. The difference being that it did not have the light. Illumination was accomplished by pointing it at a light source such as lamp or the sky. The major drawback with orthotolidine was that it only measured total chlorine and these units fell out of use as requirements for monitoring the free chlorine throughout the system. There was a supposed work around in which the operator was to inject the reagent into the sample already in the comparator taking a reading as quickly as possible and then wait a set time for the total total treading from the difference of the two readings one was supposed to get an idea off what the free and total chlorine was. The DPD (I won't even try to write out the the full compound name) method soon arrived on the seen that had species specific reagents that took the fumbling and guess work away.
Yes Wallace & Tiernan made some very nice stuff, and it's a bit sad to see a company that paved the way to be lost in the world of mergers and acquisitions.
I thoroughly enjoy your work
Dave
During a class called 'Materials and Processes of Photography' at the Rochester Institute of Technology, we used a comparitor system for determining density of photographic materials. Much less sensitive than electronic photomultiplier devices, they provided acceptable analysis of film densities.
I've lived most of my life in the San Fernando Valley of Los Angeles, and grew up with a backyard swimming pool. My dad had a chlorine residual and pH test kit with bottles of chemical, a clear plastic tube for water, into which the chemicals were (separately) dropped, and a clear plastic square with circles of color to compare the color of the treated water in the tube. He held the tube of treated water and the square up for sunlight to shine through and compare the colors. The same sort of thing but simpler. From time to time the color square needed to be replaced as the colors fade.
Dude, you are my new favorite content creator.
Anyone with an aquarium will recognize the color matching ph test. This is done by swishing a test strip in the water and waiting a few moments to match the resulting color to a chart. Though Im sure there are also liquid reagent test probably more accurate.
Thank you for another great and informative video, I remember using a similar device to check water quality in swimming pools.
Interesting. This video reminds me of a book I read on hydroponics, where in the book it mentions the ideal ph of water should be around 5.5 and 6.5 for most plants. However I was doing pool service at the time and ideal they said about 7.5 and up was ideal ph.
The book mentions devices that can measure pH and devices that measure the water hardness / what minerals were likely most present in your water (copper, zinc, magnesium, etc). I don't know how old those later devices were invented but I think it would make for a good follow-up video and or topic idea.
Another great video, Gilles...👍
I have a similar device but for radiological testing, cold war era Polish military. the colours are just different shades of pink though. not actually looked into the chemistry it uses that closely but it does have the glass ampules with said chemicals in them that would change colour when exposed to radiation, seems you can still pick the units up relatively easily on eBay and the like.
What is the advantage of this contraption over just a card with the colours on it?
With a printed chart, you're trying to compare the colour of reflected light to the colour of transmitted light. But with this device, you are comparing two beams of transmitted light. Some people just find the like-for-like comparison easier.
I guess the built-in light source is not so you can test water samples in the dark, but a way to try to guarantee a fairly consistent brightness for comparison. This would be especially important for field testing in all weathers -- you don't want false readings on super bright or overcast days.
What clever simple device
Well, what I might suggest is that this device, despite the Olive Green color might not be military issue. 💁 For some reason various manufacturers of random devices selected the Olive Drabe color for the paint. My parents had a slide projector in Olive green. 🤔 I can’t really say why. Surplus paint maybe?
Isn’t this the same system for testing chlorination in swimming pools?
TH-cam put an AI audio track in this video dubbed in Portuguese (I'm Brazilian) and I can't find where the hell to deactivate this, I watch all videos in English no problem, why would I want to watch something dubbed by AI 🤢
FWIW: I have been having problems with comments I post under videos DISAPPEARING IMMEDIATELY.
It started happening, then it stopped, then it started happening again, now it seems to have stopped {again}.
I do not know if this was 'collateral damage' from the A.I. thing or not, but I suspect it was...🤦♂️
Click on the gear Icon, Audio Tracks
@@carlosalloatti5899 unfortunately that option doesn't exist on the app, only the browser
I'm not that jazzed about putting AI assist anywhere regardless of whether it fits or not, but AI dubs might be a solid accessibility improvement - someone who doesn't know English well enough and can't use the subtitles for some reason (side note: bit weird that there are multiple auto-generated audio tracks available and only one option for subtitles) can still enjoy the content. Why TH-cam decided to set the dubbed audio as the default one is a whole other issue:D
You can change the audio track in the settings (the cog ⚙icon in the player) :)
@@sebastianwlodarczyk unfortunately that option doesn't exist on mobile
Good stuff, Bubs.
4:25 ColoUr…..My dad was from France and I grew up spelling “colour with a U” and everyone said I was WRONG! Gotta have a “U”!
4:22 percent?
I guess it needs a special light bulb?
Looks like it's dipped in blue die to block some of the reds.
The fact that it is incandescent means it has a continuous spectrum, so it won't really matter if the batteries die down and it moves towards yellow. You are comparing the two colours that are both illuminated by the same light source, so the overall lamp colour is not particularly important.
@@johncoops6897 Ah yes. I didn't consider that it was a comparison, rather than something that requires a high CRI.
reminds me of "pool PH / Chlorine testkiits that are similar whereas you add the water into 2 tubes side-by-side and then add the chemicals (couple drops per tube) and compare the color to pre-determined sealed tubes positioned adjacent to each tube with calibrated numbered markings per tube... (though its been so long since I USED this thing, that I completely FORGOT what the markings were and how to read them! - I also tried to find an image of such testkits but Google has become a NAZI about links to images and I can find NOTHING that doesn't generate TONS of ADs!)
Hi, always enjoy your videos but please turn off the auto-translated video titles, the translations are almost always bad and jaring.
Okay
Sehr interessant
heiliger (adjective, singular/male/nominative-case) = holy/sanctuous/saint in German, (holly comes from German heilig. saint from Latin sanctuous)
-holly- *_holy_* if you're trying to sound smart you should probably learn how to spell simple words
@@haywoodyoudome very constructive (not)... thanks anyway, sorry for the typo... Still, I´ll stick with perfecting my knowledge over real languages, no time for rubbish... If I ever feel the need to sound brain-dead, then, I´ll perfect my English, promised...
Interesting.This made me curious to look up when PH test strips were first made. They didnt come into common use until the 50s,so these types of machines were probably the main tools for testing for some years.
Minor side note: i've used PH test strips for many decades with success and recently tried versions that test for chlorine content.Those were somehow utterly useless,not working at all! Go figure
YAY
Simple design? We do the same thing with aquariums and just use the ampile with a color chart. no need for the box and eye peace and lenses etc.
It depends on your colour vision ability. Some people just have trouble comparing the colours of transmitted and reflected light.
As someone who knows nothing about anything,itd be neat for you to make up alternate history for thse types of things,and then jist put out a real video later.Will double your content output,and make for laughs along the way.
"Have you ever been to a concert and seen a light display with a rotating color gel wheel on a disco ball? Sit back and enjoy the strange origin of them."
" As someone who knows nothing about anything " your here and now know something, I think you may like "Technology connections " don't be a stranger and drop in for more somethings. Best
Shit Audio-Sync. - Why is ther no possibility to switch it off as standard?
THIRD🥉
It looks like you're first lol
Story of my life .......
Hey, can you turn off the title and description translations? they're genuinely horrible.