Thanks so much for watching! For part 1 of my reaction to Cursed Units, please check out: kzitem.info/news/bejne/snl5uISnjJFin6gsi=oXyuJQN3fT_qVyOs
@bsadewitz
Ай бұрын
I am interested in what you think of HR-6544, the Atomic Energy Advancement Act. The Union of Concerned Scientists opposes it on certain grounds, but I really don't have the background to make any sort of informed decision. It does bother me when nuclear energy is not considered "sustainable". What, is there not enough fissile material to at least serve as a stopgap on the way to (hopefully) fusion or something? I'm a little skeptical of that. Yeah, I get that you need fossil fuels to at least get it out of the ground (now, at least), but come on ...
@OdenWilson
Ай бұрын
I thinking about you should watch a other Roblox game but this time it's called the black hole core
@brunoh.1312
Ай бұрын
you should explain kVAr, I saw them on my pilot course and could not understand how they worked...
@Pablo360able
Ай бұрын
I love taking the logarithm of units. It's fun. log(quantity UNITS) = log(quantity) + log(UNITS)
@soorian6493
Ай бұрын
Figuring out what log(m) or log(°K) actually means can certainly be a task though
@Pablo360able
Ай бұрын
@@soorian6493 It's a formal term that represents the unit that will be recovered on exponentiation.
@LordFokas
Күн бұрын
@@soorian6493 Kelvins aren't degrees. It'd be just log(K).
@Pablo360able
Ай бұрын
"You're not gonna wanna take an alpha dose internally." *scribbles down on notepad* don't... eat... radioactive... substances... if they give off alpha particles. got it.
@josh-gu6zi
Ай бұрын
You can eat them once....
@boiomo_
Ай бұрын
@@josh-gu6zi maybe more than once if you're fast
@wwoods66
Ай бұрын
... I mean ... don't eat the others _either._
@alexhemsath6235
Ай бұрын
@@wwoods66unless a doctor tells you to, like Tec-99
@Pablo360able
Ай бұрын
@@wwoods66 *sadly puts the banana down* [NOTE: in the interest of full disclosure, this commenter acknowledges they are fully aware that bananas are actually relatively inert, and their low level of radioactivity is used on diagrams as a baseline because most organic matter is as radioacrive or more, but really that just reinforces the point]
@dalitas
Ай бұрын
The "pH" of the sun is about -3.
@practicemodebutton7559
Ай бұрын
it's more like a gradient but yes, on average it is -3
@williamkane
Ай бұрын
@@practicemodebutton7559 He did say "about", not "exactly", nonetheless you are right.
@samiraperi467
Ай бұрын
And there are acids stronger than the Sun.
@winterturtle1596
29 күн бұрын
@@samiraperi467Helium Hydride for example, which I suppose is also where most of the acidity of the sun comes from anyway
@TheUncannyF
Ай бұрын
My "favorite" cursed US units (from European perspective): - Pounds of weight vs pounds of force - Ounces of weight vs ounces of volume - Acre-foot
@scottygagnon4287
Ай бұрын
Which is why the US should use the metric system (American BTW).
@markandrew5968
Ай бұрын
@@TheUncannyF the problem with the US units isn't the units, but that we still use them. The problem is us Americans. In the day they came from, they were much more useful than base 10, because almost all the US units are based on highly factorizable conversion rates. This is important when you're comparing things and using standardized objects to compare them. Nowadays, there's no reason to stick with them when it just makes communicating with the rest of the world harder. The units made sense and had practical usage when they originated. Even now, pound force and pound mass is functionally the same as how laypeople would use kilograms. People pick up a weight and think it weighs 5 kilograms. The kilogram that most people think of is kilogram force, where you multiply one kilogram mass by the acceleration of gravity on Earth. One pound force is one pound mass multiplied by the acceleration of gravity on Earth. Ounces and volume and weight does suck, but this time not because it's the same word but because we dropped the rest of the unit. The word ounce derived from a word that meant "one twelfth" which if it was used consistently would make it similar to the deca- prefix in SI, but it somehow became a sixteenth instead, although jewelry still uses it as a twelfth. Anyway, an ounce is a sixteenth of a pound or a sixteenth of a pint.
@paulsilagi4783
Ай бұрын
@@markandrew5968 What helped me immensely with the whole oz./fl.oz. and pound/pint thing is realizing that one unit of volume of water has one of the corresponding unit of mass. Much like with a liter/kilogram of water.
@NoNameAtAll2
Ай бұрын
you forgot having 3 different tons
@TheUncannyF
Ай бұрын
@@markandrew5968 I agree, of course. For "human scale" things imperial units are sometimes easier / more convenient due to tradition. Funny thing though - by mentioning 1/12 You reminded me not only of ancient Babylonians (who used based 12 - which has more whole fractions than base 10, and is still - covertly - used in trigonometry), but also of "gauge". By which I mean "12 gauge shotgun", "X gauge wire". I may be wrong, but I remember reading somewhere that X in "gauge X" comes from taking a "standard" cannonball and halving it X times. Therefore the diameter of copper wire of gauge X is a diameter of a cross-section area of a sphere which one would get after halving a cannonball X times. Wild.
@META_mahn
Ай бұрын
From the comments of Curseder Units: the sun has a pH of approximately -3 This is by far one of my favorite cursed facts
@robertmoore8166
Ай бұрын
When I was a Nuclear Power Plant Reactor Operator, S.C.R.A.M. was an official acronym that stood for Safety Control Rod Actuating Mechanism. This was the official name.
@KibitoAkuya
Ай бұрын
I suppose it was so you didn't ever forget what you're supposed to do if sh*t hit the fan
@mortadeloyfile
12 күн бұрын
I remember that in the old times S.C.R.A.M. meant Safety Control Rod Axe Man because the control rods where hanging with a rope and in a emergency a man with an axe would cut it to drop them and stop the reaction.
@robertmoore8166
11 күн бұрын
@@mortadeloyfile I would love to know which nuclear reactor had control rods hanging from ropes. My "old times" is 1976 to 1982. There were no axe men to be seen in my time and nobody mentioned anything about axe men. Seriously, I would love to read some actual documentation where this was the case, but such a crude safety system would be highly suspect.
@mortadeloyfile
11 күн бұрын
@@robertmoore8166 Really old times, 1942, the Chicago Pile 1 had a rope which sustained the control rods, in case of emergency an Axe Man would cut it, that made Enrico Fermi create the Acronim S.C.R.A.M. which meant Safety Control Rod Axe Man or Safety Cut Rope Axe Man. P.S: I think there's been a small confusion, english is not my first languaje and I meant that I remember "reading" that in the old times...
@somethingsomethingsomethingdar
Ай бұрын
As an electrician in the US we use the lumen and Kelvin value to determine what kind of lamps to get. The watt stuff is for the peasants.
@SlimThrull
23 күн бұрын
Phft. Real men still use candles. ;D
@wwoods66
Ай бұрын
The 'curie' is the older unit of radiation (nuclear decay), so it was based on natural phenomena, like the foot or pound. In this case, the radiation from a gram of radium -- an element discovered by the Curies. 14:50 "I don't know if they were trying to say some statement about Curie's contribution" Kind of. "At the 1910 meeting, which originally defined the curie, it was proposed to make it equivalent to 10 nanograms of radium (a practical amount). But Marie Curie, after initially accepting this, changed her mind and insisted on one gram of radium. According to Bertram Boltwood, Marie Curie thought that "the use of the name 'curie' for so infinitesimally small [a] quantity of anything was altogether inappropriate".[2] en.wikipedia.org/wiki/Curie_(unit)
@user-xj8wy4uu1q
Ай бұрын
Cool
@krokorok_
Ай бұрын
WAIT LOL rewatching the video with this reaction, i saw that i'm in the intro complimenting the music xD
@JonathanMandrake
Ай бұрын
exp(...) can be very useful when the ... is very complicated or not a number, because technically e^... is only defined for number exponents, and the () is very useful for readability
@lekrashar
Ай бұрын
Or when it's much easier to keep things inline like on a youtube comment or internet text messengers Or in a lot of programming languages, you don't have the "^" operator so you get a math library with the "exp" function But otherwise yeah. On paper I'd only see "exp" either for complicated powers or function composition, IE. exp( g(f(x)) ) Or for stuff like Matrix exponentiation, IE. exp(Mᵀ)
@kirby1024
Ай бұрын
It also means that log(...) and exp(...) have the same form factor, which can make it a bit easier to see relations when you're playing around with equations!
@txchno4271
Ай бұрын
i think for someone learning math, learning that the exponential function is e to a power can be a bit restricting when trying to think outside the box since you have two other forms of the function that work completely fine, being its taylor series and the compound interest one which let you play with different maths
@JonathanMandrake
Ай бұрын
@@txchno4271 I have no idea how what you're saying is related to what I wrote. Ofc students have to learn that all these different approaches lead to the same function, but the compound interest problem is solved the easiest way by writing down the Taylor formula
@rmullins93
Ай бұрын
You should definitely watch Jan Misali's a joke about measurement. That was referenced at the end of the video. It's hilarious m
@puffaliaz
Ай бұрын
As was suggested on the prior video, you should check out "a joke about measurement" by jan Misali Edit: which apparently this video also mentioned 36:09
@rainmannoodles
Ай бұрын
I’ve found that a lot of LED bulbs are really inflating their “incandescent watt equivalent” so a bulb labeled as “100W equivalent” is barely as bright as a 60W incandescent. Compare lumens. This is the way. 😁
@Pablo360able
Ай бұрын
Idle thought: If you use Boltzmann's constant to represent temperature in terms of energy, heat capacity becomes dimensionless, so specific heat capacity could have units of inverse kilogram. though obviously it shouldn't. Worth noting that this is actually not as unintuitive as it sounds. One inverse kilogram is the specific heat capacity of a substance such that one joule of energy heats up one kilogram of the substance by one joule's worth of temperature (one joule divided by the Boltzmann constant, or about 7.243*10^22 K). This reveals the real problem, which is that using energy to represent temperature represents a massive disparity in scale the likes of which things like Avogadro's number exist to reconcile.
@scottygagnon4287
Ай бұрын
This baby can hold an 《INVERSE KILOGRAM NUMBER》of heat.
@RaviVemula2
Ай бұрын
18:20 this is super interesting for me to think about, because I work in the biomedical industry where we're talking about crosslinking polyethylene or sterilizing medical devices, and radiation is in the range of 50kGy for crosslinks and above 100kGy for sterilization. I've never really considered or conceptualized uSv or millirem before!
@dongiovanni4331
Ай бұрын
The Russians had an... interesting series of liquid metal reactors. The Alfa class had lead-bismuth reactors.
@coyote4440
Ай бұрын
10:13 - I pretty sure someone should invent two more units of absorbed dose, Blu and Gren, so the absorbed dose will cover all the spectre)
@marcelwattaul3789
Ай бұрын
Regarding the nested definitions. In my field (IT) there is a definition called EPROM. An EPRROM is a erasable PRROM. A PRROM is a Programmable RROM and a RROM is a rewritable ROM and a ROM is a read only memory. It isn't quite the same, because technically those are definition extensions, but they feel similar.
@awocrf
Ай бұрын
eeprom btw ive never heard of rrom
@MenwithHill
Ай бұрын
It's definitely related, cause it's not that common for acronyms to be still useful when you truncate them several times over.
@loandx2074
Ай бұрын
I, an analytical chemist, have actually had to use the barrer this year, as well as its SI counterpart. The conversion was horrendous.
@MrMartinSchou
Ай бұрын
kWh/1,000 hours is indeed cursed. But in practical terms it also makes a lot of sense where it's shown. The energy label is standardized across a LOT of products. Yes, for something that uses the same amount of power all the time it's powered it does seem stupid. But here's a question - if your fridge draws 200 watts, how much does it cost to run? It's not running all the time. So THAT label says XYZ kWh/annum, as the expectation is that it is plugged in and powered constantly. For a washing machine, dryer or dishwasher, it doesn't make sense to talk per 1,000 hours, because that's now how you use those. It's not per annum either, because you're not running it constantly either. It's per 100 cycles - because a single person household is going to run them a lot fewer times a year than a household with six people. And TVs? How much they're used depends on the household as well. But it's not going to be per use, because it doesn't have fixed cycles. It's not going to be per year, because you don't run a TV 24/7. So it's per 1,000 hours. Same for things like lights, because they're also used like that. Cursed unit? Yes. Very smart design? Absolutely. And we all know that it's because the EU average price in the second half of 2023 - a weighted average using the most recent (2022) consumption data for electricity by household consumers - was €7.908 x 10^-8/joules. I don't know about you, but I don't have that kind of small change lying around. > ec.europa.eu/eurostat/statistics-explained/index.php?title=Electricity_price_statistics#Electricity_prices_for_household_consumers
@prefabrication
Ай бұрын
exp(x) is infinitely worse than e^x. I didn't even know what I was looking at when I first saw it; never even thought it was connected to e. Very annoying, in my opinion. I don't get the point of it.
@markandrew5968
Ай бұрын
I don't know for sure that it is the case with this, but many of these things are the result of early computational physics simulations, and the limitations of displays on early computers. When the text displayed is entirely black and white, with no gray values, and each character was a single digit number of pixels wide and tall, superscripts and small characters should be avoided as much as possible for clarity and legibility. Additionally, most early computers had extremely limited character sets to reduce the amount of memory taken by each character. Some early computers only had upper case letters as a result of those two needs. A lot of mathematical functions with special symbols or characters got written out as text instead, like EXP(), POW() SQRT(), SUM(), ETC. When mathematicians became the early programmers, those text abbreviations may have backtracked into use in mathematics, not just coding.
@prefabrication
Ай бұрын
@@markandrew5968 That makes sense from that perspective; I understand that.
@jakykong
Ай бұрын
@@prefabricationTo expand on the earlier answer in this thread, which is mostly correct, it's worth adding that software today is still written using plaintext, it's not just a display technology limitation, there's just no clean way to represent 2-dimensional math notation, and the one-dimensional version needs to compromise this way. Mostly the basic conventions haven't changed much in the last 50 or 60 years.
@melon4738
Ай бұрын
In defense of exp() sometimes your parameters are so big or complex you just don't feel like writing a string of tiny numbers
@prefabrication
Ай бұрын
@@melon4738 That makes sense. But personally, it doesn't bother me; but fair enough, still.
@jqb6XD
Ай бұрын
exp definitely looks weirder, but it removes ambiguity between the number e and e used for scientific notation
@comeonandslamandwelcometot2418
Ай бұрын
If you haven’t already, you should react to jan misali’s “a joke about measurement”, it’s really good.
@IvanBaAl961
Ай бұрын
CGS makes perfect sense for science purposes and still occasionally used. What's funny is how energy output of a supernova or hypernova sometimes written in ergs (10^{51} ergs, lol).
@petercarroll684
Ай бұрын
Perfect example of the chaotic lawful neutral
@dylanbontempo2708
Ай бұрын
10:26 didn’t realize experience gain was exponential in math! Neat!
@MrGonzonator
29 күн бұрын
Barn-Megaparsecs are roughly ⅔ teaspoon. The volume of water that contains as many molecules as the Earth holds that volume, is roughly 2 Barn-Megaparsecs.
@watsisname
Ай бұрын
On your note of writing out exp(thing) vs. e^thing, as a physicist my take is that it depends. I usually prefer the look of e^thing for simple expressions, but sometimes the quantity in the exponent is a complicated term involving multiple constants, ratios, even integrals, which can end up looking way too busy, or annoying to try to write that small. Exp(stuff) in those cases are much more readable.
@qpSubZeroqp
Ай бұрын
1:01 Command & Conquer: Generals Zero Hour! OMG what a throwback! I need to start playing that again
@NitrogenPaw
Ай бұрын
definitely, its a great game
@harper5128
29 күн бұрын
on writing exp(...) vs e^(...) - I personally find that it depends on how symbolically bloated the argument is, since everything gets sized down in an exponent. the usual expression for planck's law of spectral radiance is a good instance of the kind of thing that to me would look ugly without exp(...) notation
@Xaerorazor0
Ай бұрын
Good ol’ CGS system… had to deal with it when learning about nuclear fusion in stellar bodies…
@Bassalicious
Ай бұрын
The light bulb thing in Watts makes total sense for actual bulbs with an efficiency in the single digits. It's a great estimation of the heat energy the socket / housing will have to deal with. At least I've always understood those numbers as basically TDP.
@Rusty-METAL-J
Ай бұрын
Hey I love Kurtwood Smith. He played Red Foreman of That 70's Show He was also in movies like, "Rambo" & "Delta Force"
@Rusty-METAL-J
Ай бұрын
MagLite tells their lights brightness on lumens. My ML150 LRX puts out 1 082 Lumens of light.
@gurchyy
Ай бұрын
Great video! When I saw you reacted to part 1 I hoped this would be coming.
@joshl.s.4939
Ай бұрын
Clearly, the barrer can be understood as 10 to the -14 square meters per mercury-second
@jaredschroeder7555
Ай бұрын
Yaknow, i loved the original videos, and i also find myself appreciating the stuff you add quite a bit. Love it
@Horizon4690
Ай бұрын
If by all possible, you should react to Kyle Hill's video "World's only GLASS nuclear reactor!"
@seanb3516
3 күн бұрын
We had 2 company divisions feuding with each other. A Compromise was not forthcoming and the rest of us wound up working with Grams/Square Inch.
@UniquePerspective
Ай бұрын
In DSP programming we love radians. We can effectively model frequencyless waves. Basically describing the shape of a wave, not caring about frequency.
@JPaterson8942
Ай бұрын
I kinda love the music. Its both peaceful, yet ominous.
@justinmcgough3958
Ай бұрын
the first time I saw exp() I thought it was short for exponent so number exp(y) I thought meant that number to the y power.
@nic12344
Ай бұрын
The magnetic reluctance SI unit is inverse henry or H^−1. However, since I hate inverse units, I use the MKS (meter, kilogram, second) system, in which the magnetic reluctance unit is the "ampere-turns per weber". We can also use the CGS system's "gilberts per maxwell" or, alternatively for extra cursedness, we can write it as "abampere-turn per gauss-square centimeter" or "biot-turn per gauss-centimeter" or ev+en "√dyne-turn per gram per biot per square centimeter". And yes, you guess it, we can use biot twice with "biot-turn per gram per biot per square centimeter" in which case I guess they cancel eachothers, so it's really just "turn per gram pe square centimeter". This makes absolutely no sense, since it means that magnetic reluctance is in fact some angle divided by pressure. So if we come back to SI, it means that it can be expressed as "degrees per pascal"... TL;DR Magnetic reluctance in SI units is inverse henry or, somehow, degrees per pascal.
@seraphina985
25 күн бұрын
Those energy efficiency labels make a bit more sense when you consider they are meant to inform consumers the cost of using the device. So they are all in billing units per unit of usage. For things used intermittantly like lights and TV's the latter is 1000h, for always on appliances like refigerators it is per year, for devices with highly variable loads and programmed cycles like washing machines it is 100 typical operating cycles. So it makes sense for the reason described at the end as it relates the units shown on consumer bills to the most sensible terms to describe the usage of the device in question. It makes it easier for consumers to estimate how the cosumption relates to something they have an intuitive sense of.
@moleman7632
4 күн бұрын
for me one of the most cursed units in nuclear energy is for neutron cross sections: cm^2 or barns which is 10−24 cm^2 Except its not an area in the traditional sense: Its the area in cm^2 for which the number of neutron-nuclei reactions taking place is equal to the product of the number of incident neutrons that would pass through the area and the number of target nuclei.
@Rusty-METAL-J
Ай бұрын
Another reason is that the rad was developed years before the gray.
@Rusty-METAL-J
Ай бұрын
I've heared of Emu as an a bird that is unable to fly.
@ArodWinterbornSteed
Ай бұрын
Angular displacement is wild 🤘
@jayp7171
Ай бұрын
EMU is a big bird, kinda like an ostrich
@markandrew5968
6 күн бұрын
On the topic of nested acronyms, SATA cables in computers are an interesting mess. They're not exactly nested acronyms in that it doesn't have multiple words with a single letter, but because all the technology is in iterated steps, you have multiple tiers of specifications giving acronyms for terms that already include acronyms. SATA's specification includes specifying that SATA is an acronym for Serial ATA. So what does ATA stand for? Well that's defined in an entirely different defined standard. ATA Stands for AT Attachment. So that begs the question, what does AT stand for? Well it stands for AT, but it also stands for Advanced Technology. ATA was originally called the AT Bus Attachment, with the AT referring to the IBM PC/AT, because that introduced the bus connector that ATA used. Supposedly the "AT" in PC/AT stands for "Advanced Technology" but IBM never officially confirmed this.
@robertcasey2490
Ай бұрын
Someone asked me "By what metric?" I said "MKS, not CGS". 😊
@yeetusmobeetus
Ай бұрын
When I took chemistry. Moles were literally the one thing that made me want to quit. It was so annoying.
@kukuc96
Күн бұрын
I don't think many people alive have used the CGS system much. It has been falling out of favor since the 1880s, and the now metre-kilogram-second trio was adopted as standard over it in the 1940s, so it hasn't really been in use for over a 100 years.
@Igor-ug1uo
21 күн бұрын
Back in the day when I lived in Ukraine, every weather forecast on the radio or TV would include atmospheric pressure in cmHg.
@Pablo360able
Ай бұрын
exp() is definitely less cursed, because in many contexts the exponential function makes more sense as a power series (the limit of a series of polynomials) than as a generalization of repeated multiplication. however, I prefer writing it as an exponent because, well, I'm the kinda guy who loves taking the logarithm of units.
@melsbacksfriend
Ай бұрын
As a programmer, I prefer exp(x) notation.
@OriginalSoulbourne
Ай бұрын
I love the unit for work in cgs: the erg
@wepped482
16 күн бұрын
If you cancel out the units cm/cm^2 you lose your reminder on how it was calculated.
@ArodWinterbornSteed
Ай бұрын
I find that exp(x) usually is more readable in the chemistry context, especially when the lecture slide or whatever isn’t professionally typeset. It might just be what everyone is used to though.. and that seems to be a common thread in cursed units 😂
@JohnLadan
Ай бұрын
Chemistry units and thermodynamic properties make a lot more sense if you think of it as "mol of X" or "g of Y" -- the type of chemical matters. A gram of water is different than a gram of mercury. Similarly, a revolution is a different thing than a decay event or the crest of a wave. In physics we tend to forget this, because forces don't care what the matter is, just what its mas is.
@p3chv0gel22
Ай бұрын
I work in it and every single god damn time, we get a shipment of monitors, and i see "9kWh/1000h", i get a mathemarical stroke
@bobgoldham69
20 күн бұрын
The reaction quotient having different dimensions depending on the reaction MAKES PERFECT SENSE. The rate of reaction and chemical equilibrium depend on concentration of all substrates and products *differently* depending on the order of your reaction. This is entirely correct and sensible.
@bobgoldham69
20 күн бұрын
Also pH of water does change with temperature, but not with pressure because there are no gasses involved.
@XanTheDragon
Ай бұрын
I need to evolve on your name, and hereby propose that CGS = "cursed garbage system"
@batteryman2852
Ай бұрын
3:00 Funny how i just explained one of my co-worker, the Lm is the unit of brightness that is much more closer to what you would expect, the 1W = 10W conversion also doesnt makes much sense, since if you look at a 3W LED, you feel like you get blinded, cant think that would happened with a 30W old style bulb. Its like the more watt LED is, there more out of wack the Watt comparison gets.
@kevind0
Ай бұрын
Interestingly fuel usage is also quiet cursed it is (depending on what you are using MPG or Lieters/100km) distance divided by volume or volume divided by distance so it is effectivly an area
@s4m4r
Ай бұрын
You really should watch the "The 5 most dangerous chemicals on Earth" by SciShow. A bit on the shorter side, but fun.
@DonDueed
Ай бұрын
Tyler, pressure may not be significant in the contexts you work in, but there is one application where I believe it's critical: nuclear weapons. As I understand it, it's radiation pressure that heats and compresses the fuel in a thermonuclear device, thereby initiating fusion. A similar approach (using lasers) is being investigated for controlled fusion power reactors.
@EliasMheart
Ай бұрын
No, I am often confused by the exp() notation, since we don't use it in Germany (I think/hope?)... So until recently I always wondered to which base something was being raised, because I read it as the hat in "x^y", not as "e^y"
@matsv201
2 күн бұрын
We had pull gauges in highschool marked in dyne.. while they where marked in both dyne and newton. or.. rather there was just one set of number but the was two sets of units
@serg_sel7526
Ай бұрын
The KWh was born like that: You use machine that consumes 1 KWh for one hour. That is KWh. The KWh/1000h is probably born like this: You run machine that is consuming One KWh per 1000 hours. It is like taking energy consumed and dividing it by time That is what we call a watt in SI.
@tapejara1507
23 күн бұрын
Generals reference. a man of culture 👍
@Dexaan
Ай бұрын
Nesting acronym: You Only YOLO Once
@Rusty-METAL-J
Ай бұрын
Does anyone remember Monty Mole from, Super Mario World?
@jamcdonald120
Ай бұрын
I do like fuel effciency as an area since it is the cross section of the fuel used if it was streatched next to the vehicle as it drives
@nikolayzamjatin5811
7 күн бұрын
Exp x and e^x are actually not the same. e^x is defined for real numbers, but exp x even for complex. It's like with complex logarithms.
@Bliss467
Ай бұрын
So you’ve encountered nested acronyms, but have you encountered _recursive_ acronyms? For example, GNU, the fundamental program library for the Linux operating system, stands for GNU is Not Unix
@v3dsoft
Ай бұрын
10:09 I think it depends on what is under exponent. If it is simple number or variable, then e power something is a way to go. On the other hand, if it's some kind of monstrosity like here, exp looks much better. Can you image e power huge fraction with million variables, roots, functions and maybe more fractions?
@ArodWinterbornSteed
Ай бұрын
I suspect that the dimensionlessness of the radian is not like the dimensionlessness of the fine structure constant 🤔 In particular the radian feels more ‘dimensionfull’ 😅
@Mikemk_
Ай бұрын
I'm not fond of exp, but we have sin, cos, log, etc. It's just a function defined as exp(x)=e^x
@cnfnbcn3227
24 күн бұрын
I argue that exp() and e to the power of something ARE different things, and this has to do with complex numbers exponentiation. Long story short, exp(z) for any z is determined. One of the ways to define it is as follows: Let z be a + ib, then exp(z) = exp(a + ib) = (e^a)(cosb + i*sinb). It has a single value. e^z does NOT have a single value. take e^(1/3) for example. You have 3 different complex numbers that, cubed, give e. exp() and raising to complex power are actually two different operations. Probably you can't even call raising to complex power an operation, since it can have more than one value. I'd rather call it a multivalued function. So, no, exp(z) and e^z are NOT the same thing. This is exactly why we invented exp() in the first place. And the fact that often times we substitute exp(z) with e^z is probably a way for us to simplify things to a more common notation, but it doesn't make them the same thing.
@tofuholland6145
Ай бұрын
exp(z) and e^z are meaningfully different in complex analysis because e^z isnt necessarily a single valued function but exp(z) is. though a lot of people write it as e^z anyway so its really a notational thing more than anything
@cynicalcitizen8315
Ай бұрын
Most of these units are far beyond the maths that I use daily.
@piadas804
Ай бұрын
Just use mol×m^-1×s^-1×Pa^-1
@circuitgamer7759
Ай бұрын
The angular units are mildly painful to me. The difference is dot product vs cross product, but both are represented as multiplication in the units, so they look the same. Why not just specify dot vs cross in the units?! It would be annoying to convert to that now given how long the world has used the current one, but I really wish that was specified. It also seems like something that would be covered in a physics class at some point, but every physics class I took (which was as many as I could, up through college) just sort of ignored it, and explained it as "You can't do that because that's how it is". And my teachers were all amazing, it's just not covered for some reason. I had to ask separately, and the college professor still had to check a textbook to answer. I think I could've figured it out on my own, but I was already talking about something related, so I figured I might as well ask. Also, now less related but still really annoying - Significant digits! I understand the application, and the rules that were given, but the problem is that they break down very quickly for anything past addition, subtraction, multiplication, and division. And even mixing those can give incorrect results, depending on what set of rules you're told to use. I know where the problem is, but that system is fundamentally flawed. Also, just state the uncertainty instead? That produces reliable results, can account for errors that don't align with the base you're working in (so base 10 for the vast majority of cases unless you're me [I like working in binary when I'm solving a lot of the time]), and is much more useful and understandable.
@jercos
Ай бұрын
Free pie? Terrible? Never!
@hqTheToaster
Ай бұрын
I'd say exp is more cursed, because you can do funny magic with it like exp ^harmonic(x) [x] where ^ denotes a real number integrity toward repeating the function before it.
@ProfTydrim
Ай бұрын
1 meter = 3.34 * 10^(-9) seconds. I won't elaborate.
@darioabbece3948
Ай бұрын
Unpopular opinion: I find the SI units for electricity way more cursed than the CGS ones. CGS has two concurrent systems for big things and small things and those don't mix, like Ohm and Farad do in the SI system
@Redingold
Ай бұрын
The Planck length and time are really small (very roughly, a hundred billion trillion trillionth of a metre and a ten million trillion trillion trillionth of a second), and the Planck temperature is really big (very roughly, a hundred million trillion trillion Kelvin), but the Planck energy is weirdly intermediate (it's about 500 kilowatt-hours). The corresponding Planck mass is about 20 micrograms, or about the mass of a mite.
@mafuyuhoshimiya8219
Ай бұрын
Ahh, C&C ZH? Cool :D
@orngjce223
Ай бұрын
I put a 65W "300W equivalent" LED bulb in my ceiling because I actively _want_ to flashbang myself in the morning to wake me up. Someone else buying a 65w light might be looking for a sensible household bulb. We are not the same.
@samiraperi467
Ай бұрын
Megawatt days per kilogram of uranium depends on how enriched it is? What if we have 100% uranium? :) 24:51 Foucault's result is impressively accurate, it's off by less than 8 km/s (in the ballpark of 27 millionths).
@matsv201
2 күн бұрын
How many hours the engine have run... how is that cursed. Well the hours of the engine running is set on the engine base load, that is a specific RPM. So the hours counting, is really just 60 times the RPM of the engine at base load... so.. its actually just a measurement of how many times the engine have turned over.
@ahettinger525
Ай бұрын
You make think the pi is terrible, but it's the point I remembered to thumbs up!
@hirusthehellhound
Ай бұрын
Would you like to check out plainly difficult's history of lucens reactor meltdown? I find it interesting for the fact that the coolant is something different from regular reactor
@tyler89557
Ай бұрын
I honestly prefer using exp(x) in lieu of e(x) for more complicated exponents, mostly because I have crappy handwriting.
@Rusty-METAL-J
Ай бұрын
If this is all supposed to be Sooooooooooooo smart why does he misspell maximize and minimize as neither word contains an s. Ize and Ise do not even sound the same. That's an abomination.
@sentinelprime5921
Ай бұрын
Because he is writing in English, not MERICAN
@NitrogenPaw
Ай бұрын
wth this is the first time i've seen that game reverenced (1:04)
@stevenclark2188
Ай бұрын
I feel like a reactor with 100% U-235 fuel would would be trying very, very hard to stop being a reactor and would require a LOT of control rods.
@jamesmayberry78
Ай бұрын
If you haven't seen jan misali's joke about measurement, I can recommend it
@starfirei3356
Ай бұрын
I legitimately thought the original’s title was “crusader unit”
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