"Per Mille" is a trap for young players.
"Parts Per" notation explained, along with percentage and ppm.
Forum: https://www.eevblog.com/forum/blog/eevblog-1300-parts-per-notation-explained/
#Fundamentals #Tutorial
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"Parts Per" notation explained, along with percentage and ppm.
Forum: https://www.eevblog.com/forum/blog/eevblog-1300-parts-per-notation-explained/
#Fundamentals #Tutorial
EEVblog Main Web Site: http://www.eevblog.com
The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2
Support the EEVblog through Patreon!
http://www.patreon.com/eevblog
AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g
Buy anything through that link and Dave gets a commission at no cost to you.
Donate With Bitcoin & Other Crypto Currencies!
https://www.eevblog.com/crypto-currency/
T-Shirts: http://teespring.com/stores/eevblog
Done.
PPB is parts for a billion.
Permille
Didn't know this is unknown in other countries. Here in Switzerland (and according to other commenters the whole Europe), it is common as mud to talk in permille. Especially in practical sciences. Pretty much all tolerance values of all kind of regulations are given in permille. It is not used much in common language though but it certainly is a concept most people are familiar with.
Old video but I find it interesting people don't know about this. Kids here tend to learn of this early (~8th grade of primary school)
My mother told me per mil, "promille" in german, it's nothing strange for me.
In Poland we know very well what ‰ means
Great video, always wondered about that. For the layman being an instruction manual it should have been 0.2%
Sorta makes more sense to me to use "parts per thousand" for accuracy from an enginerd point of view, what with enginerding notation going in steps of three orders of magnitude. Leave that "percent" rubbish for money grubbing purposes like taxes and interest rates; one cent is one percent of a dollar and a basis point is one percent of one cent on the dollar.
Expecting Chinglish, our minds are trained to use fuzzy logic to ignore seemingly errant symbols. Your error is more than understandable.
Good work.It's easy to understand. Keep rocking!
Can you explain the floor specification details is mentioned in the spec??
Ex: For 2 VDC : Accuracy : 20PPM + 2microvolt??
whenever I hear "one one-thousandth of an inch", I think I die a little inside. What is wrong with engineering people? Just use micrometers and millimetres
I don't need to watch the entire video for already liking this
In Europe it is frequently used for Alcohol in your blood. In Germany the legal limit i.e. is 0.8 Promille (Promille = the German version of per mille). So at least every Person that have a Driving License knows per mille 😉
Thermistors!
Well, in Germany in Engineering the % is most common. Permille is in Germany used sometimes. But we mostly know it from police and doctors for Alcohol- concentration in blood. But doctors here use really strange units 🙁 . Currently for COVID-19-Incidences they use 1/100 000. That’s really strange. I think we should stay with the 1000-System we know from Engineering. I would prefer the PPM in this case. But doctors use always extremely strange units – like “mm Hg” for blood pressure or even for gas concentrations that are expressed in “partial pressures”.
In Taiwan, that symbol is taught in elementary school math class…. Just to prevent people from being fooled I suppose XD.
An interesting and related thing the we have in Swedish is the notation of "percantage units" (procentenheter). It's something we talk about when a percentage (such as interest rate, or support for a politician) has changed. For example, if the interest rates drops from 2% to 1%, it's actually a 50% drop, but it's 1 percentage unit drop. The precentage unit doesn't really have a sign, but you very often hear news reporters say it. It's a very convenient way to talk about those kinds of things, without it being really weird and deceptive. For example, say that support for a politician increased from 1% to 2%. If you say support increased by 100%, it is technically true, but it sounds like it's much more than it actually is. Here, it's easier to say that the support increased by 1% percantege unit.
I wonder if there's a similar way of expressing this in other languages (I'm sure there is)?
It may be interesting for a part 2 of this video explaining "per unit" or pu used in electrical power engineering.
[0, 1] > % > ‰
So this video is about not point seven seven per mille of all the one's you've made? Good on ya mate!
It is frequently used in Europe for measuring alcohol content in blood.
I thought that every car driver should know what ‰ means
You cleared up a lifetime of confusion around mil (thousands of an inch) and millimeters. Thank you.
So ?, this PSU runs on alcohol ?
I totally forgot to include CPM, or "Cost Per Mille" that you hear Youtubers talk about all the time. That's "Cost Per Thousand Impressions" or effectively "Revenue per thousand impressions". So a Youtuber might typically earn say $1 CPM, or $1 for every 1000 views.
And I just sprung it on Mrs EEVBlog who knew instantly it was per thousand, as she's chemist and it's used in various chemical concentrations.