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SI Prefix expansion 

National Physical Laboratory
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NPL leads an expansion to the range of International System of Units (SI) prefixes
Find out more: www.npl.co.uk/si-prefix

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17 ноя 2022

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Комментарии : 37   
@vishalmishra3046
@vishalmishra3046 Год назад
The name for 10^30 was originally proposed to be *Quecca* and then replaced by *Quetta* , since the former is inappropriate in some languages.
@ionatizonismyocrinthia
@ionatizonismyocrinthia 9 дней назад
Wait what about wekameter for quettameters and xennameters for ronnameters And wektometers for quectometers and xonometers for rontometers?
@brauljo
@brauljo 9 дней назад
@@ionatizonismyocrinthia aɪ faʊnd "queca" hwɪʧ minz "tʰə fək"
@brauljo
@brauljo Год назад
I'm still annoyed by the fact that the base unit for mass is prefixed. They should've just made up another unit that's equivalent to the kilogram and go from there, or just use the grave.
@alnitaka
@alnitaka Год назад
But what if we get to 1000 quetta-? We don't need any more prefixes. We just simply combine the existing ones in a place-value scheme. For example, the Sun is 2 quettakilograms, a star 500 times the Sun's mass is 1 quettamegagram and so forth. After quettaronna- would come biquetta, where we use chemical prefixes to denote how many quetta there are. So a biquettakilogram is 10^63 grams. When we get to the hundred prefix, one could use adapted English, huna for one hundred and tousa for thousand. This gives us for quantities so large and small that we don't need any new prefixes (except maybe huna and tousa).
@ionatizonismyocrinthia
@ionatizonismyocrinthia 9 дней назад
Fact: The sun is ≈2Vg (Vundagrams) Yes, I am using Jim Blowers' SI prefix extended because why not
@user-fg6ro
@user-fg6ro Год назад
What about ethics, love, beauty, intelligence, ego, pride? How do you measure them?
@brauljo
@brauljo Год назад
1:26 Based how they only show plant-based foods
@nikolaimackenzie1432
@nikolaimackenzie1432 Месяц назад
another name for megagram is a ton.
@alnitaka
@alnitaka Год назад
I just noticed that "ronnagram" sounds like Ron Graham, who created humongous numbers, much greater than 10^27, in his proofs.
@user-fg6ro
@user-fg6ro Год назад
10^27 is nothing in front of infinity. Nothing. 10^(10^27) is nothing. And so on.
@VoidHalo
@VoidHalo Год назад
I was just wondering last night when they were going to add new prefixes. I wasn't searching for it, just thinking it. So Googles spy stuff to recommend relevant content is getting a bit too on the nose. Heh. It was in my "discovery" list when I open a new tab.
@BryndanMeyerholtTheRealDeal
We can go to Quettaronna- (10^57) and Quectoronto- (10^-57), then we hit another ceiling.
@creationisntgood942
@creationisntgood942 Год назад
But we shouldn't
@brauljo
@brauljo Год назад
Double prefixes are obsolete and not BIPM approved
@BryndanMeyerholtTheRealDeal
@@brauljo We still do stuff like undecillion, and duodecillion. There appears to be no reason not to do so, as it saves unused letters for prefixes in the long run…
@brauljo
@brauljo Год назад
@@BryndanMeyerholtTheRealDeal The problem is that those words mean different things in the short and long scales
@ionatizonismyocrinthia
@ionatizonismyocrinthia 9 дней назад
Instead of quettaronna-, we can do ocha-. And otro- for quectoronto-.
@OneMonster
@OneMonster Год назад
Mass of a bit of data - since it’s digital, how do you measure it? Genuinely baffled here…
@VoidHalo
@VoidHalo Год назад
Well, the way DRAM stores data, a bit is stored as the capacitive charge in the gate of a MOSFET. The gate acts like a very small capacitor. I'm not sure about the 5nm node MOSFETs they use in modern CPUs, but in much larger, discreet MOSFETs the capacitance is still only a few picofarad. But the point is when that capacitance on the MOSFET is holding a bit, it's charged up basically like a very tiny battery. It's a bit confusing, I know. But when the capacitance of the gate is charged, negatively charged electrons flood into one side of it, while the other side has electrons pulled away from it creating a positive charge equally opposite to the negative charge on the other side. So you have an excess of electrons on one side and a lack of them on the other. Those electrons have weight so I'm assuming that's what they're talking about. You can do some simple math to find how many coulombs of charge of the MOSFET's capacitance holds at the voltage it's at. And since charge is directly proportional to how many charged particles (electrons) you have, you can take the charge value and figure out how many electrons would create that much charge. And then work out how much mass that many electrons has. And yes this is not an easy thing to explain or understand. You need a good bit of background in computer science, physics and electronics to understand even the explanation. This is stuff most people don't get to until 2nd or 3rd year university so don't feel bad if you're confused. If you're really set on understanding it, the best thing you can do is write down any terms in this post you don't understand and learn about them one by one. And take it slowly. Here are some terms that will help you get started. Wikipedia, and the textbook on allaboutcircuits.com will have info on these. Voltage, charge, current, power capacitors, capacitance, transistors, field effect transistor (fet), jfet, mosfet, multivibrators, sram and dram. In more or less that order. Remember to take your time. Best of luck! And take a break if you have to.
@OneMonster
@OneMonster Год назад
@@VoidHalo this is a fantastic explanation, I can't thank you enough! I hope I got this (at least to some extent) right already, that the weight of data is matched (or corelated) to the weight of the particles needed to store the information in the capacitors (like MOSFETs). Thank you again, kind regards!
@brauljo
@brauljo Год назад
Maybe it's similar to how charged batteries are ever so slightly more massive
@BryndanMeyerholtTheRealDeal
Fun fact: The mass of the sun is 1.989 Qkg (Quettakilograms)
@scmtuk3662
@scmtuk3662 Год назад
Wrong. The mass of the Sun is 1,989 Quettagrams. You cannot combine prefixes. Otherwise, 1 milligram would be called 1 microkilogram.
@lhuskamikathoria
@lhuskamikathoria Год назад
The mass of Ton 618 is 1.31274 x 10^14 Qg.
@BryndanMeyerholtTheRealDeal
@@lhuskamikathoria Wow! I haven't seen anything within the range of Quettateragrams…
@lhuskamikathoria
@lhuskamikathoria Год назад
@@BryndanMeyerholtTheRealDeal "quettatera" doesn't exist. 👍
@ionatizonismyocrinthia
@ionatizonismyocrinthia 9 дней назад
​@@lhuskamikathoriaQuettateragrams are actually sortagrams.
@yellowrose0910
@yellowrose0910 Год назад
OK on the "digital storage" part... no. IT will be forced to adapt a perversion of the decimal prefixes to binary, and we will see those as measures of storage (eg "Tebibyte" or TiB instead of the deprecated and not-quite-equivalent "Terabyte" or TB). Quantum physics and any and all real sciences aren't going to continue to adapt increasingly-cringe-sounding prefixes but instead stick with simpler and unbounded exponential notation.
@brauljo
@brauljo Год назад
They're only cringe if you make them cringe, they connotatively sound like any other prefix
@creationisntgood942
@creationisntgood942 Год назад
"Quantum physics and any and all real sciences aren't going to continue to adapt increasingly-cringe-sounding prefixes but instead stick with simpler and unbounded exponential notation." Why the hell not? The prefixes we do have are practical and efficient. Please just stop. Also, what do you mean by "real sciences"? That's a very questionable assertion. Metrology is a real science.
@user-fg6ro
@user-fg6ro Год назад
Looks like these people just want to show off their new prefixes!😂 Just like a boy who likes to show off his new shoes, or a girl who likes to show off her new dress!
@user-vp2ru3ii7n
@user-vp2ru3ii7n 5 месяцев назад
Pov : t la a cause de Mme pinel
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