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 hydroptic   ( @hydroptic@sopuli.xyz )  to Science Memes@mander.xyzEnglish · 1 year ago

This feels wrong. I love it.

sopuli.xyz

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This feels wrong. I love it.

sopuli.xyz

 hydroptic   ( @hydroptic@sopuli.xyz )  to Science Memes@mander.xyzEnglish · 1 year ago
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  •  puchaczyk   ( @puchaczyk@lemmy.blahaj.zone ) 
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    1 year ago

    This is why a length of a vector on a complex plane is |z|=√(z*×z). z* is a complex conjugate of z.

    •  randy   ( @randy@lemmy.ca ) 
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      I’ve noticed that, if an equation calls for a number squared, they usually really mean a number multiplied by its complex conjugate.

    •  Dr. Bluefall   ( @drbluefall@toast.ooo ) 
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      [ you may want to escape the characters in your comment… ]

  •  blackbrook   ( @blackbrook@mander.xyz ) 
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    1 year ago

    You need to add some disclaimer to this diagram like “not to scale”…

    •  hydroptic   ( @hydroptic@sopuli.xyz ) OP
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      1 year ago

      It’s to scale.

      Which scale is left as an exercise to the reader.

      •  Jerkface (any/all)   ( @jerkface@lemmy.ca ) 
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        I really don’t think it is.

        •  hydroptic   ( @hydroptic@sopuli.xyz ) OP
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          I may not have been entirely serious

  •  ornery_chemist   ( @ornery_chemist@mander.xyz ) 
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    1 year ago

    Isn’t the squaring actually multiplication by the complex conjugate when working in the complex plane? i.e., √((1 - 0 i) (1 + 0 i) + (0 - i) (0 + i)) = √(1 + - i2) = √(1 + 1) = √2. I could be totally off base here and could be confusing with something else…

    •  diaphanous   ( @diaphanous@feddit.org ) 
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      1 year ago

      I think you’re thinking of taking the absolute value squared, |z|^2 = z z*

  •  BorgDrone   ( @BorgDrone@lemmy.one ) 
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    1 year ago

    Now calculate the angles

    •  Rivalarrival   ( @Rivalarrival@lemmy.today ) 
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      1 year ago

      That’s actually pretty easy. With CB being 0, C and B are the same point. Angle A, then, is 0, and the other two angles are undefined.

      •  Drew   ( @crmsnbleyd@sopuli.xyz ) 
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        1 year ago

        A is clearly a right angle

        •  Rivalarrival   ( @Rivalarrival@lemmy.today ) 
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          1 year ago

          A is drawn in such a way that it resembles a right angle, but it is not labeled as such. The length of the hypotenuse is given as zero. The opposite angle cannot be anything but 0°.

          •  Drew   ( @crmsnbleyd@sopuli.xyz ) 
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            1 year ago

            The pythagoras theorem only holds if A is a right triangle

            •  Rivalarrival   ( @Rivalarrival@lemmy.today ) 
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              1 year ago

              What is depicted here isn’t even a polygon, let alone a triangle, let alone a right triangle. This is just a line segment. Line AB is the same as line AC. There is no line BC. BC is a single point.

              I suppose it could possibly depict a weird cross section of two orthogonal circles in a real and an imaginary plane.

    •  hydroptic   ( @hydroptic@sopuli.xyz ) OP
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      1 year ago

      No thank you

  •  ShinkanTrain   ( @ShinkanTrain@lemmy.ml ) 
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  •  produnis   ( @produnis@discuss.tchncs.de ) 
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    1 year ago

    Too complexe for me ;)

  •  Jerkface (any/all)   ( @jerkface@lemmy.ca ) 
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    Doesn’t this also imply that i == 1 because CB has zero length, forcing AC and AB to be coincident? That sounds like a disproving contradiction to me.

    •  xor   ( @xor@lemmy.blahaj.zone ) 
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      I think BAC is supposed to be defined as a right-angle, so that AB²+AC²=CB²

      => AB+1²=0²

      => AB = √-1

      => AB = i

      •  Jerkface (any/all)   ( @jerkface@lemmy.ca ) 
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        I mean, I see that’s how they would have had to get to i, but it’s not a right triangle.

  •  I_am_10_squirrels   ( @I_am_10_squirrels@beehaw.org ) 
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    The length would be equal to the absolute value

  •  Ace   ( @AcesFullOfKings@feddit.uk ) 
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    deleted by creator

  •  Boomkop3   ( @Boomkop3@reddthat.com ) 
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    Turn around…

    •  Maiq   ( @Maiq@lemy.lol ) 
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      Bright eyes.

      •  Zoop   ( @Zoop@beehaw.org ) 
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        Every now and then, do ya fall apart?

  •  Boomkop3   ( @Boomkop3@reddthat.com ) 
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    Turn around…

    •  hydroptic   ( @hydroptic@sopuli.xyz ) OP
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      1 year ago

      https://www.youtube.com/watch?v=lcOxhH8N3Bo

      •  Boomkop3   ( @Boomkop3@reddthat.com ) 
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        Exactly what I thought of, but then I was like… nah that’s too cheesy

        •  hydroptic   ( @hydroptic@sopuli.xyz ) OP
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          Too cheesy?!

    •  Rivalarrival   ( @Rivalarrival@lemmy.today ) 
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      Every now and then, I get a little bit lonely and you’re never coming 'round

  •  Stomata   ( @Stomata@buddyverse.one ) 
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    deleted by creator

  •  mariusafa   ( @mariusafa@lemmy.sdf.org ) 
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    What if not a Hilbert space?

  •  barsoap   ( @barsoap@lemm.ee ) 
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    Looks like a finite state machine or some other graph to me, which just happens to have no directed edges.

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