I just came from the bar and typed ancient and ended up here. I'm confused right but I'll add this to my favorites and see it when I wake up. It made sense with the volume down.
Now notice how the sine wave crosses at pi and 2pi.
Next notice how a nicely drawn circle can fit in each of the half of the sine wave, with coincidentally the diameter pi.
Finally, realize that although it is not wrong to create variables in math, the usefulness of such a declaration is minimal at best and pointless at worst.
there has been some massive push-back from pi conservatives. they claim that tau is in fact wrong for complicated mathematics. my view is that mathematics is rife with cheap constants specifically invented to make the work easy. ergo use tau where tau makes sense and use pi where pi makes sense. don't needlessly complicate the learning process of children for the sake of your ego.
who cares if its tau or pi, both aren't exact numbers. Just one of tons of expamples: in electronics you often calculate with half of the sinus/cos wave...so we are at tau/2 again :) It's a demonic circle.
Nine years ago, I was attending the last year of high school, and last math class of my entire life, and we studied trigonometry that year (my school was a literature and dead languages and philosphy and things that officially have nothing to do with science one, so our math classes were slow). Well, I didn't understand one single thing. Just memorized something and cribbed the rest. Now, thanks to you, I understood something! At least, something.
@TheMrClamberto I'd rather not have to find the kinetic energy with .5mv^2, or elastic energy with .5Cx^2, or the change in position with .5gt^2. Most quadratics that come up in any realistic scenario have a factor of 1/2 attached, because integrating a power function always introduces a factor of 1/(n + 1).
@TheMrClamberto First, pi*r^2 isn't calculus. Second, what about the formula for sector area, .5*theta*r^2? It's not just physics. Third, what calculus classes have you been taking? They at least gave my class calculators. Finally, most formulae in calculus that use pi actually become simpler with tau, e.g. Fourier transforms, Cauchy's integral, and the normalized Gaussian.
Maybe for a mathematician changing 2 pi with tau is not a big deal. After all that's what mathematics is for: expressing things in different ways so that you can take the simplest path of solving a problem. And that's exactly why there should be a 2 pi equivalent. Lots of units are introduced the same way, like radians for example. Why do we use radians and not degrees? It's after all the same thing: an angle! It's just for convinience. Why do we say 2 hours and not 120 minutes. It's all the sam
While you make a strong argument for tau in some cases, you haven't considered all the cases like area. I agree we can use tau to make some mathematical concepts more concrete but we should use pi still because it also makes some math concepts more concrete than tau can and would.
@someonenot2 Read the website she links to; it addresses that objection. Basically, saying A = 1/2*tau*r^2 actually makes more sense, since most quadratics that you find in nature have a 1/2 attached to them, since integrating a power function always introduces a factor of 1/2.
You are not eating the circunference, you're eating the entire volume of the pie. If you associate it with the height times the base area (and the radius still 1), you'd get:
V=h*pi*1²
V=h*pi
half a pie?
1/2*V=h*pi/2
one-third of pie?
1/3*V=h*pi/3
And that's why pi is still better, at least in your example.
@rjqg327 to show, that you can substitute 2pi as another variable? call is x,y,x,z...etc. makes not difference. Pi is fine. pi better. It is like saying "lets call 2e as l!"
this is not so impressive. Yipee. I get another letter represent 2pi. How can i benefit really? save the time to write two pi. The unit circle as tau doesn't benefit me greatly. It will not help me in anything really. Unless it contributes something useful to differential geometry or diff equations. i am listening. pi is the ration of the circumference of a circle to its diameter. The only wrong thing here is the amount of butter in that pie.
You haven't really worked with radians, have you. It's so annoying that pi/2 radians is 1/4 of a circle and pi is just half of it. It's like taking to halves to define an object rather that define it as one whole. Imagine if you had to say "I've got two halves of an apple". It's just unnecessarily confusing and obscure.
Haven't really worked with radians? Seriously? I am a undergraduate mathematics major, why wouldn't I work with radians.
Even I as a mathematics major. Who does mathematics for fun. Does proof after proof. Break my head to wrap my mind around abstract concepts. I do not find this interesting. It is just tau. I use tau as a dummy variable (like x,y,z, etc). I took this in high school, and it was simple. Nothing was difficult. Even students i tutor don't get annoyed
@darthmath2 As a fellow math major, who also does math for fun, I find replacing pi with tau incredibly interesting. For me, it's about the beauty of equations, and tau makes so many more identities beautiful.
@ianmathwiz7 For me, i see no beauty in it. Like that gaussian integral, the area under that curve would change from sqrt(pi) to sqrt(1/2tau). I mean no profound meaning there. Oh well. That is just me. At least we find mathematics as a whole lovely. I like number theory alot. and differential geometry. and those differential equations (ordinary so far). isn't it awesome? lol. I can't wait to go to graduate school!
@darthmath2 The integral itself might have that, but I find myself using the normalized Gaussian much more; in that version, you have a factor of sqrt(2pi) = sqrt(tau) in the normalization constant.
My favourite branches of mathematics would have to be complex analysis and graph theory.
The thing is, guys, Tau isn't replacing pi. Even if tau starts becoming common use, you can still use pi whenever you want. There are some equations in which pi is a better number to use, so use it then, if you want, but in more cases than not, tau makes math easier. It's not redefining math, just making it more simple when it's appropriate.
Really, if we're using the diameter to define the circle constant, which can be used to determine the number of radians in a circle, the radian should also be defined by the diameter.
But Vi that seems rather arberchary, Sure Tau makes radiant easier but it would be annoying to convert between pi and tau every time you want to work out radiance
tau would be the worst idea ever if you use that symbol anyways.... in the engineering field that is already over used to hell I dont need some stupid asshole to come out and say HEYY LETS USE TAU INSTEAD OF PI!!! no... unless you can come up with an another 'elegant' symbol (good luck) for tau stfu k thx
Aw, why do we have hate of Pi so much? Come on guys, surely this is like saying Pluto isn't a planet anymore, are we really going to say Pi is no longer a number? :(
you, knowing what you know, SHOULD GO ON MORE ABOUT THE TRUTH, THAT HAS BEEN HIDDEN , this math you talk about, THERE IS MORE ABUOT SACRED GEOMETRY THAN WE WILL EVER KNOW, more has been hidden about TRUE MATHETMATICS, than almost anything in history, THE PEOPLE WHO HOLD THE KEY TO THE SECRET, HOLD ON VERY VERY TIGHTLY
i think that you've mistaken the unit circle for being an area but it's actually the circumference which is 2(pi)r, and since the radius of the unit circle is 1 than it makes perfect sense that it is 2pi
@MeTalOZDC The main point that she is making is that pi is the ratio of a circle's diameter to its circumference, yet it is a radius that defines a circle, not its diameter. Therefore, if we take the number tau, and define it as the ratio of a circle's radius to its diameter, it makes things simpler. The circumference of a circle is now (tau)r, therefore all the way around the unit circle is now tau radians.
although this one instance in which you use pi "tau" would be a lot nicer, but in later mathematics courses it's a lot nicer to write "pi" when you need it than "(tau)/2"
Haha, I don't know whether you're really serious about this, but Tau wouldn't be more logical or simpler. Pi is that ratio, not Tau. So you'd only add a new constant which doesn't even do that much. It's not simple if you add unnecessary crap! :)
But a circle isn't "2 pi". What does that even mean? If you want an eighth of a circular pie, that slice's area is pi*r^2/8 , not pi/16 ... Right? I mean, what?
Well its not about the tyrany(:P) of pi and the opulence for using tau.
It is more for remind us the past and the origin of trigonometry-->analysis etc.
wich all started from geometry.π(pi) represented one of the most hard problems of ancient geometry ->squaring the circle.Tau is a very good idea but i think pi is more respectable for beeing used.
I have nothing against using tau instead of 2pi other than the fact that tau is already in use in many engineering disciplines for other values, not the least of which is the RC time constant for electrical circuits. I vote that we have a new symbol and name for 2pi. I suggest the value vi. 2pi = vi. The symbol will be a stylized V and Vi Hart can design it. Who's with me on this?
it's because the circumference is 2π•r. The unit circle has a radius usually defined as one, though radians are a proportion of the radius to the arc length. However, if the radius *were* 1, the circumference of the circle would be 2π.
The tau argument has some good points, but in terms of real-world applications, if you attempt to take a measurement of an existing circular object (or void) you're going to measure the diameter. Not the radius.
@JonMW Not having to divide by two when you measure diameters is surely less beneficial than Trig/Precal's pedagogy improving vastly, formulas simplifying and making more intuitive sense, and the benefit of seeing a single turn as constant rather than a constant times 2. Even (1/2)pi*r^2 is conceptually more intuitive than pi*r^2.
Mathematics graduate here... to those saying this is too complicated and should be simplified, this is high school math, you should know this, math gets way more complicated than this. Vihart, this is fantastic, I love all of your videos, you are doing a great service in teaching people how math can be fun and extremely interesting. Thank you.
You probably shouldn't use such hard equations when explaining this concept because I'm pretty sure 90% of you audience probably have no clue what you are talking about. It's like saying dihydrogen monoxide, most people don't know what that is even though they see it everyday. You should simplify thing more, just saying.
ok, after watching this twice, i got it, pi is confusing as you say, because it was first calculated using the diameter, why? because in that time, seemed good. so the convention of using pi acording to the diameter is because at that time diameter seemed better, so, math continued developing over pi. its like temperature scales, why do we use fahrenheit and celsius, if the really "natural" and universal scale is the kelvin? because it's conventional.
Euler's Identity can still have 5 important numbers with tau: e^(iτ) = 1 + 0. That zero isn't randomly added there; it's really part of the identity. e^(iθ) = cos(θ) + isin(θ) → e^(iτ) = cos(τ) + isin(τ) → e^(iτ) = 1 + 0. I think it strengthens the argument. The way they do it with π is cheating.
holy moly, the confusion is in your head, seriously, pi is a constant, period. any doubts? now, you should blame either your teacher or your book, but not the whole math just because you think using another latter is easier. by the way, we kind are runing low on greek letters, physics already uses all of them, and you still want to give more meanings to them? now thats the confusing part
0:17 Pi is the ratio of the circumference of a circle to its diameter, b/a, not a/b
lordofhatred510 1 day ago
i came here for the pie
FreyaTheNerdyNinja 1 day ago
Math - it works, bitches.
swimnut99 2 days ago
Oh, god, not a tau video. I'm so sick of people trying to argue for tau. There are plenty of situations which make tau just as unreasonable.
JVP3122 2 days ago
@JVP3122 Which situations?
MrXenitha 2 days ago
@JVP3122 Yes, please elaborate. I need valid arguments for maintaining my memory of the first bunch of digits of pi >:3
zachanima 1 day ago
I just came from the bar and typed ancient and ended up here. I'm confused right but I'll add this to my favorites and see it when I wake up. It made sense with the volume down.
HipsterBot2000 2 days ago
She kinda reminds me of Lisa Simpsons!
Subbed!!
topas12345 3 days ago
Ghazuntai.
minitophat 3 days ago
Ok pause the video at 2:45.
Now notice how the sine wave crosses at pi and 2pi.
Next notice how a nicely drawn circle can fit in each of the half of the sine wave, with coincidentally the diameter pi.
Finally, realize that although it is not wrong to create variables in math, the usefulness of such a declaration is minimal at best and pointless at worst.
Imisstheoilers 3 days ago
Pi-Winning.
MsRainbowHats 4 days ago
NO! You need to make a tau! I don't know what it would be or how it would taste, but you need to make one!
TheBrainiac1000 4 days ago
OH MY GOD thank you so much trig is now making so much more sense.
provocativetimbre 4 days ago
there has been some massive push-back from pi conservatives. they claim that tau is in fact wrong for complicated mathematics. my view is that mathematics is rife with cheap constants specifically invented to make the work easy. ergo use tau where tau makes sense and use pi where pi makes sense. don't needlessly complicate the learning process of children for the sake of your ego.
gravecactus 5 days ago
who cares if its tau or pi, both aren't exact numbers. Just one of tons of expamples: in electronics you often calculate with half of the sinus/cos wave...so we are at tau/2 again :) It's a demonic circle.
Climrockz 5 days ago
better solution : leave mathematics basics alone and change the literature meaning of pie:
change what is known as 'pie' now to 'twopie', and make a half circle = pie
ikmoestLucaslezen 5 days ago
@talanhawke totally agree, but try telling that to my math teacher...
marchukhockey 5 days ago
Nine years ago, I was attending the last year of high school, and last math class of my entire life, and we studied trigonometry that year (my school was a literature and dead languages and philosphy and things that officially have nothing to do with science one, so our math classes were slow). Well, I didn't understand one single thing. Just memorized something and cribbed the rest. Now, thanks to you, I understood something! At least, something.
Smilzetta 6 days ago
SHE CAN COOK???!!!
HuffeIpuffer 6 days ago
Also, one last thing... celebrating BOTH days means twice the pi.
I did the math, and that is definitely twice as awesome.
talanhawke 6 days ago
@talanhawke Actually, its 3x the pie.
apotheosity 3 days ago
"The way of mathematics is to make stuff up and see what happens."
Yep.
talanhawke 6 days ago
Damn it. Now I want two pi(es).
talanhawke 6 days ago
Now I want pie...
Wordnerdification 1 week ago
pi-winning
n0oB4life 1 week ago
oh and + you have a snail.....
masterman397 1 week ago
please be my match teacher.. i wanna be smart
masterman397 1 week ago
At least she is in the kitchen.
RGPMAW64 1 week ago
area = (r^2*T)/2? perhaps pi is useful for defining the area
rocket3989 1 week ago
"lovely tou" haha wow this got confusing fast. I would love to see her show a teacher how Pi is wrong. try hard?
surfer2beat 1 week ago
I WANNA MARRY HER *tears of happiness*
IndustrialEngineer91 1 week ago
I mean i'd rather not have to find the area of a circle with .5Tr^2.
TheMrClamberto 1 week ago
@TheMrClamberto I'd rather not have to find the kinetic energy with .5mv^2, or elastic energy with .5Cx^2, or the change in position with .5gt^2. Most quadratics that come up in any realistic scenario have a factor of 1/2 attached, because integrating a power function always introduces a factor of 1/(n + 1).
ianmathwiz7 1 week ago
@ianmathwiz7 In physics you get a calculator; in calculus class you don't.
TheMrClamberto 1 week ago
@TheMrClamberto First, pi*r^2 isn't calculus. Second, what about the formula for sector area, .5*theta*r^2? It's not just physics. Third, what calculus classes have you been taking? They at least gave my class calculators. Finally, most formulae in calculus that use pi actually become simpler with tau, e.g. Fourier transforms, Cauchy's integral, and the normalized Gaussian.
ianmathwiz7 1 week ago
Maybe for a mathematician changing 2 pi with tau is not a big deal. After all that's what mathematics is for: expressing things in different ways so that you can take the simplest path of solving a problem. And that's exactly why there should be a 2 pi equivalent. Lots of units are introduced the same way, like radians for example. Why do we use radians and not degrees? It's after all the same thing: an angle! It's just for convinience. Why do we say 2 hours and not 120 minutes. It's all the sam
Tanatosss 1 week ago
Never heard tau is supported in math.h!
Here comes pi: #define M_PI 3.14159265358979323846
And this is what tau should be: tau = 2 * M_PI;
So, I will never forget pi!
loliraki 1 week ago
@loliraki I will use this the next time I code
yaton123 1 week ago
While you make a strong argument for tau in some cases, you haven't considered all the cases like area. I agree we can use tau to make some mathematical concepts more concrete but we should use pi still because it also makes some math concepts more concrete than tau can and would.
someonenot2 1 week ago
@someonenot2 Read the website she links to; it addresses that objection. Basically, saying A = 1/2*tau*r^2 actually makes more sense, since most quadratics that you find in nature have a 1/2 attached to them, since integrating a power function always introduces a factor of 1/2.
ianmathwiz7 1 week ago
have your pi and eat it tau
MrAbeAllen 1 week ago
Born on Tau Day, aaawwww yeaaahhhh.
TimePanda 1 week ago
@TimePanda I just realized that I was too! :D
wouldy0ukindly 1 week ago
You are not eating the circunference, you're eating the entire volume of the pie. If you associate it with the height times the base area (and the radius still 1), you'd get:
V=h*pi*1²
V=h*pi
half a pie?
1/2*V=h*pi/2
one-third of pie?
1/3*V=h*pi/3
And that's why pi is still better, at least in your example.
(sorry for bad english, I'm Brazilian)
Love your videos, btw!
jhlarcher 1 week ago
@jhlarcher She's measuring in radians, since that form of measurement works regardless of the size of the pie.
ianmathwiz7 1 week ago
im in 8th grade, and next year, when i take trigonometry, i am so arguing this...
rjqg327 1 week ago 27
@rjqg327 im in 8th grade and im taking trigonometry. ADVANCED
PattyObrien616 1 week ago
@rjqg327 to show, that you can substitute 2pi as another variable? call is x,y,x,z...etc. makes not difference. Pi is fine. pi better. It is like saying "lets call 2e as l!"
darthmath2 1 week ago
@rjqg327 whaaaat a douche you are
l0vEr4in 1 week ago
@rjqg327
you arnt gonna see the use of tau for a while
Moshejetz 4 days ago
You are like Martha Stewart (baking and drawing) + Mathematical skills + Musical skills!
PrinceCharrrming 1 week ago
this is not so impressive. Yipee. I get another letter represent 2pi. How can i benefit really? save the time to write two pi. The unit circle as tau doesn't benefit me greatly. It will not help me in anything really. Unless it contributes something useful to differential geometry or diff equations. i am listening. pi is the ration of the circumference of a circle to its diameter. The only wrong thing here is the amount of butter in that pie.
darthmath2 1 week ago
@darthmath2
You haven't really worked with radians, have you. It's so annoying that pi/2 radians is 1/4 of a circle and pi is just half of it. It's like taking to halves to define an object rather that define it as one whole. Imagine if you had to say "I've got two halves of an apple". It's just unnecessarily confusing and obscure.
Tanatosss 1 week ago
Haven't really worked with radians? Seriously? I am a undergraduate mathematics major, why wouldn't I work with radians.
Even I as a mathematics major. Who does mathematics for fun. Does proof after proof. Break my head to wrap my mind around abstract concepts. I do not find this interesting. It is just tau. I use tau as a dummy variable (like x,y,z, etc). I took this in high school, and it was simple. Nothing was difficult. Even students i tutor don't get annoyed
darthmath2 1 week ago
@darthmath2 As a fellow math major, who also does math for fun, I find replacing pi with tau incredibly interesting. For me, it's about the beauty of equations, and tau makes so many more identities beautiful.
ianmathwiz7 1 week ago
@ianmathwiz7 For me, i see no beauty in it. Like that gaussian integral, the area under that curve would change from sqrt(pi) to sqrt(1/2tau). I mean no profound meaning there. Oh well. That is just me. At least we find mathematics as a whole lovely. I like number theory alot. and differential geometry. and those differential equations (ordinary so far). isn't it awesome? lol. I can't wait to go to graduate school!
darthmath2 1 week ago
@darthmath2 The integral itself might have that, but I find myself using the normalized Gaussian much more; in that version, you have a factor of sqrt(2pi) = sqrt(tau) in the normalization constant.
My favourite branches of mathematics would have to be complex analysis and graph theory.
ianmathwiz7 1 week ago
"I'll be making tau, and eating two."
Best quote ever.
ButCritically 1 week ago
The thing is, guys, Tau isn't replacing pi. Even if tau starts becoming common use, you can still use pi whenever you want. There are some equations in which pi is a better number to use, so use it then, if you want, but in more cases than not, tau makes math easier. It's not redefining math, just making it more simple when it's appropriate.
exactomacto 1 week ago
Are You Lesley Winkle?
GiniePantz 1 week ago
what was the point of writing in french
machine7elves 1 week ago
That's a very buttery pi pie
luchis117 1 week ago
The Pie is a lie
GreenMonkeyOnCrack 1 week ago
wow vihart u r the perfect women!!!! mathematician, musician, u draw and now u cook!!! and i guess that u r pretty <.<
qetyoph 1 week ago
Were the pies good?
AnnaBanana24135 1 week ago
I used tau to label my sin wave values on a pre calc test over the unit circle and stuuf. I got full credit -:
eggs111 1 week ago 22
@eggs111 That's because you have a math teacher that know's what's up, Enjoy it while you can.
Zoidberg227 4 days ago
Also, the radius is used to define the radian.
Really, if we're using the diameter to define the circle constant, which can be used to determine the number of radians in a circle, the radian should also be defined by the diameter.
Should the radian should be the diamian :S ?
It's all so stupid!
TAU TO THE RESCUE !
eedes100 1 week ago
@eedes100 pi diamians in a circle, tau radians in a circle
eedes100 1 week ago
Now I'm hungry. Thanks.
At least I learned something :)
Arkandji 1 week ago
SO I WASN'T STUPID.
SnapshotOfASoul 1 week ago
But Vi that seems rather arberchary, Sure Tau makes radiant easier but it would be annoying to convert between pi and tau every time you want to work out radiance
JaysonManns 1 week ago
I especially like the way you leave out a unit of measure and abuse homonyms to try and make your point. Is the logic not good enough on it's own?
yes, doubling pi and giving it the value tau simplifies some things, so does saying 2 instead of 2(1).
CzechsMixSC 1 week ago
Check 3:55 out!
Grisebarn 1 week ago
In these comments: High schoolers who got D's in basic trigonometry.
DeathrocketFilmCorp 2 weeks ago 2
I love your channel! You have got to be one of my favorite Youtubers! Keep up the amazing math videos!
0SomwhatDamaged1 2 weeks ago in playlist More videos from Vihart
tau would be the worst idea ever if you use that symbol anyways.... in the engineering field that is already over used to hell I dont need some stupid asshole to come out and say HEYY LETS USE TAU INSTEAD OF PI!!! no... unless you can come up with an another 'elegant' symbol (good luck) for tau stfu k thx
ZixacunX 2 weeks ago
@ZixacunX whoa whoa whoa, chill man, get laid by a hooker or smoke a doobie, but don't claim a field owns a letter, that's just dumb.
AverageJoe8686 2 weeks ago
@AverageJoe8686 Engineering doesnt own the letters... but engineering is pretty much where these shit thrive
ZixacunX 1 week ago
all the people who liked this video are probably junior high or elementary students who dont like math...... or just anyone who sucks at math
ZixacunX 2 weeks ago
Aw, why do we have hate of Pi so much? Come on guys, surely this is like saying Pluto isn't a planet anymore, are we really going to say Pi is no longer a number? :(
nturneta 2 weeks ago
@nturneta that's not what she's saying at all.
shinigami109 2 weeks ago
OMG yhu are SO brilliant I LOVE YOU!!!
Yoshie20065572 2 weeks ago
τ is taf not tau
giorgosntoulos2 2 weeks ago
i feel stupid...
katyisafakename 2 weeks ago 2
I'm going to memorize this and copy it word for word, doodle for doodle and confuse the shit out of my math teacher.
Funkycawk 2 weeks ago 2
what?
Randomness114 2 weeks ago
you, knowing what you know, SHOULD GO ON MORE ABOUT THE TRUTH, THAT HAS BEEN HIDDEN , this math you talk about, THERE IS MORE ABUOT SACRED GEOMETRY THAN WE WILL EVER KNOW, more has been hidden about TRUE MATHETMATICS, than almost anything in history, THE PEOPLE WHO HOLD THE KEY TO THE SECRET, HOLD ON VERY VERY TIGHTLY
countessarcadius 2 weeks ago
IT IS NOT A MISTAKE, IT;S ON PURPOSE
countessarcadius 2 weeks ago
The Pi(e) is a lie!
ModCounter 2 weeks ago
f pi
AntonioFuego 2 weeks ago
MUST FIND RECIPE FOR PIE MADE HERE
Cheezebuga 2 weeks ago
watching this video ignoring my geometry home work and eating apple pie ^.^
MelodyPond011 2 weeks ago
i think that you've mistaken the unit circle for being an area but it's actually the circumference which is 2(pi)r, and since the radius of the unit circle is 1 than it makes perfect sense that it is 2pi
MeTalOZDC 2 weeks ago
@MeTalOZDC The main point that she is making is that pi is the ratio of a circle's diameter to its circumference, yet it is a radius that defines a circle, not its diameter. Therefore, if we take the number tau, and define it as the ratio of a circle's radius to its diameter, it makes things simpler. The circumference of a circle is now (tau)r, therefore all the way around the unit circle is now tau radians.
VideogamePianoMan 2 weeks ago
"Ceci n'est pas une pi." I love it!
icooper124 2 weeks ago
although this one instance in which you use pi "tau" would be a lot nicer, but in later mathematics courses it's a lot nicer to write "pi" when you need it than "(tau)/2"
nero314100 2 weeks ago
Change Pi to Tau is more to confuse people that learnt pi. And who should change all the math books xD?
Deadlybrownboy 2 weeks ago
Wat just happen? :)
Vortex289 2 weeks ago
THE PIE LOOKS DELICIOUS.......
VidyaSagarGoku 2 weeks ago
Haha, I don't know whether you're really serious about this, but Tau wouldn't be more logical or simpler. Pi is that ratio, not Tau. So you'd only add a new constant which doesn't even do that much. It's not simple if you add unnecessary crap! :)
Zoidypoo89 2 weeks ago
Okay,I am having a heard enough time in math as it is... I am now even more confused...
crazycar543 2 weeks ago
@crazycar543 Apparently you are struggling in English too
Rymthe 2 weeks ago
But a circle isn't "2 pi". What does that even mean? If you want an eighth of a circular pie, that slice's area is pi*r^2/8 , not pi/16 ... Right? I mean, what?
collegehumorrules 2 weeks ago
1:38 Fench lol I'm a French Subscriber !
ionlyblade 2 weeks ago
Well its not about the tyrany(:P) of pi and the opulence for using tau.
It is more for remind us the past and the origin of trigonometry-->analysis etc.
wich all started from geometry.π(pi) represented one of the most hard problems of ancient geometry ->squaring the circle.Tau is a very good idea but i think pi is more respectable for beeing used.
tonix1993 2 weeks ago
3.141592653589793238462(etc.)
scientiaesugaku 2 weeks ago
This has been flagged as spam show
I'm really upset with this video.
Pieanator 2 weeks ago
im pi-winning
MrCuddz 2 weeks ago 2
That looks sooooo delicious
Bazzzzzaaaaaa 2 weeks ago
man, i'm in geometry and i thought that was difficult...
ShhhhWeDontKnowYou 2 weeks ago
i wish i could make a pie from scratch like that....
ShhhhWeDontKnowYou 2 weeks ago
e to the i to the e i o is e to the wau to the tau wau wau.
DarwinsChihuahua 2 weeks ago 27
I don't get it. I probably never will. I have the exact opposite brain as you. But that's cool, because I love you anyway.
Allyouneedisluv1 2 weeks ago 2
It's time for a change
TheSharkasmCrew 2 weeks ago
This has been flagged as spam show
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louisbrassyyy 2 weeks ago
LOL Dradians
knivzta93Sback 2 weeks ago
this is all very interesting but i am only in year 5 maths so i dont really understand :(
kezar123456 2 weeks ago
Don't make pie. Make tart ^_^
STF413 2 weeks ago
That's a looooot of butter!
Speedynat1 2 weeks ago
It's so simple, with tau being 2 time pi, but it's obviously way better and COOLER.
InMiddletown 2 weeks ago
I would like you to be my teacher.
Honeco97 2 weeks ago 3
i like Pi, but i like Tau more, cuz if i choose Tau, i get 2 pies
p00pkrap 2 weeks ago 92
@p00pkrap If you choose Tau, you get one pie, or two π's.
nxkr3w 2 weeks ago
@nxkr3w Pie or π, it still sounds delicious. i'm fine with either. wanna share?
p00pkrap 2 weeks ago
@p00pkrap No.
nxkr3w 2 weeks ago
good to see she's in the kitchen.
ptouhey 2 weeks ago
I have nothing against using tau instead of 2pi other than the fact that tau is already in use in many engineering disciplines for other values, not the least of which is the RC time constant for electrical circuits. I vote that we have a new symbol and name for 2pi. I suggest the value vi. 2pi = vi. The symbol will be a stylized V and Vi Hart can design it. Who's with me on this?
DarwinsChihuahua 3 weeks ago 3
I just zoned out about a fourth of the way there, I'm sorry :l
UnHolyMan9117 3 weeks ago
You lost me when you the pie left the screen. Now I am confused and hungry.
starwarsgeek8 3 weeks ago
it's because the circumference is 2π•r. The unit circle has a radius usually defined as one, though radians are a proportion of the radius to the arc length. However, if the radius *were* 1, the circumference of the circle would be 2π.
goop2526 3 weeks ago
The tau argument has some good points, but in terms of real-world applications, if you attempt to take a measurement of an existing circular object (or void) you're going to measure the diameter. Not the radius.
JonMW 3 weeks ago
@JonMW Not having to divide by two when you measure diameters is surely less beneficial than Trig/Precal's pedagogy improving vastly, formulas simplifying and making more intuitive sense, and the benefit of seeing a single turn as constant rather than a constant times 2. Even (1/2)pi*r^2 is conceptually more intuitive than pi*r^2.
TwistedLemniscate 2 weeks ago
ok... now I have to watch it again and see if I can catch up XD
Faysheren 3 weeks ago
genius is to petty a word to describe your mind
Green01123Gold 3 weeks ago
@Green01123Gold ...
Etrajbe 2 weeks ago
Technically, you would have to go to the end of pi to find out what pi times two is....
3.141592653589793238462643383279502884197169399. Ect... Not that it's possible.
marchukhockey 3 weeks ago
what????????????????????
peney2 3 weeks ago
I wonder what my math teacher will think if I write tau instead of pi on my test... oh well, guess I'll do it!
juntie9 3 weeks ago
@juntie9 or it could be an AP prank for math :P
juntie9 3 weeks ago
Hey, just wondering... what is your recipe for pie? ^.^;
Just wondering, because, well, it looks delicious.
LukaNekoEcho13 3 weeks ago
lmao PI-WINNING!
MitchWins 3 weeks ago
Mathematics graduate here... to those saying this is too complicated and should be simplified, this is high school math, you should know this, math gets way more complicated than this. Vihart, this is fantastic, I love all of your videos, you are doing a great service in teaching people how math can be fun and extremely interesting. Thank you.
cjrisi88 3 weeks ago 2
You probably shouldn't use such hard equations when explaining this concept because I'm pretty sure 90% of you audience probably have no clue what you are talking about. It's like saying dihydrogen monoxide, most people don't know what that is even though they see it everyday. You should simplify thing more, just saying.
El1teCalibur 3 weeks ago
Hay I doodle in math and my teacher teaches us stuff that is stupid and we all ready know
TheNapkinman19 3 weeks ago
One word... WHAT?!?!?
crossbonesoffire 3 weeks ago
I learnt this when learning about radians?
ultrarandom 3 weeks ago
I don't think my brain can repair from this....
clajatheperson 3 weeks ago
i like pie
Insomniatwo 3 weeks ago
360 degrees ^^
WellofMellow 3 weeks ago
at 0:18 im pretty sure 'b/a' = pi
other than that i totally agree on tau
anaikahas 3 weeks ago
wait... i lost you at 0:00
mrhziggles 3 weeks ago 3
Can you come teach our school math?
markos456789123 3 weeks ago
Mind = blow
Chippy348 3 weeks ago
@LegoNinjaagoTurtle
Oxygen+Potassium would make potassium oxide
Shadow10975 3 weeks ago 9
@Shadow10975 The chemical formula of LSD is C20H25N3O.
epedritof 2 weeks ago
Oxygen Potassium....
Chen=ck the periodic table ^.^
LegoNinjaagoTurtle 3 weeks ago
you do realize that Euler's gonna be pissed...
CrisisUprising 3 weeks ago 3
Now im hungry i need to eat pie
2oot2oot12 3 weeks ago
now every time my teacher does radians and trig. I keep hearing this in my head, and thinking that it could be sooo much easier with tau!
kitti1227 3 weeks ago
just a interesting fact theta in spanish sounds the same as teta with in english means "tit" so everytime my professor is teaching everybody laugh
alexyo111 3 weeks ago
You just explained the whole trigonometry thing to me again and made me see why tau would actually make more sense. I completely agree with you!
Morghena 3 weeks ago
ok, after watching this twice, i got it, pi is confusing as you say, because it was first calculated using the diameter, why? because in that time, seemed good. so the convention of using pi acording to the diameter is because at that time diameter seemed better, so, math continued developing over pi. its like temperature scales, why do we use fahrenheit and celsius, if the really "natural" and universal scale is the kelvin? because it's conventional.
77robinhood77 3 weeks ago
My teacher got mad at me cuz she didn't know what tao is
ChuisAmazing 3 weeks ago 3
Hey guys.. watch out, we got ourselves a badass over here!
Yugiohfan7520 3 weeks ago 2
so r u sure ur not asian?
fat649 3 weeks ago
Euler's Identity can still have 5 important numbers with tau: e^(iτ) = 1 + 0. That zero isn't randomly added there; it's really part of the identity. e^(iθ) = cos(θ) + isin(θ) → e^(iτ) = cos(τ) + isin(τ) → e^(iτ) = 1 + 0. I think it strengthens the argument. The way they do it with π is cheating.
TokrokK 3 weeks ago
what is your job?
ichrisful 3 weeks ago
holy moly, the confusion is in your head, seriously, pi is a constant, period. any doubts? now, you should blame either your teacher or your book, but not the whole math just because you think using another latter is easier. by the way, we kind are runing low on greek letters, physics already uses all of them, and you still want to give more meanings to them? now thats the confusing part
77robinhood77 3 weeks ago
erm HELP!
ilovekhilfi 3 weeks ago in playlist More videos from Vihart
I could go for a slice of cherry tau right about now.
Appl314159 3 weeks ago
I cant understand a word she said..
DragonRider520 3 weeks ago
Can I have the lyrics to this song?
I mean um this story...I mean this lesson?
stevenh366 3 weeks ago in playlist More videos from Vihart