draw a PERFECT ellipse with a string and two nails

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  • เผยแพร่เมื่อ 6 ต.ค. 2024

ความคิดเห็น • 43

  • @mechanicalman1068
    @mechanicalman1068 4 ปีที่แล้ว +16

    Dude. I’m a finish carpenter and the only reason I’m here is because I forgot the method of determining layout dimensions. Without that it’s just a cute TH-cam trick. Thanks.

  • @ShaneHolly
    @ShaneHolly ปีที่แล้ว +3

    This would be a good video if u show how to make the specific size you need rather than just a random elipse

  • @brandynamite3022
    @brandynamite3022 5 หลายเดือนก่อน +3

    This is also a good demostration for kepler's second law

  • @muhammadusmankhan5121
    @muhammadusmankhan5121 ปีที่แล้ว +3

    I knew this method in 1988 when I started my first year engineering. Same explanation was given in the book by Thomas Finney (calculus and analytic geometry).

  • @neilthomason2426
    @neilthomason2426 3 ปีที่แล้ว +3

    Thanks 🙏. Two minutes, no messing about. Appreciate you taking the time.

  • @PENFOLD1962
    @PENFOLD1962 ปีที่แล้ว +1

    The BEST video on this subject, thank you.

  • @kenjineered7750
    @kenjineered7750 ปีที่แล้ว +5

    Thanks for a great video. I think you can calculate the distance from the centre to each nail (c) to give you the dimensions you want, using the formula c^2 = a^2 − b^2, where a is the distance from the centre to the vertex (pointy end), and b is the distance from the centre to the co-vertex (side).

    • @TheDerekMast
      @TheDerekMast ปีที่แล้ว

      THANK YOU. I've been looking for this information and you're the first person I found to have the answer.

    • @caltafacilitator9823
      @caltafacilitator9823 ปีที่แล้ว

      @@TheDerekMast Cheers! Still don't understand why it's Pythagoras, though. Must be to do with triangles n stuff...

    • @smudger304
      @smudger304 ปีที่แล้ว

      At the risk of sounding stupid could you explain the formula please. What does ^ relate to?

    • @caltafacilitator9823
      @caltafacilitator9823 ปีที่แล้ว

      @@smudger304 No worries. It just means "squared" but I couldn't figure out how to write the little 2 above the a, b and c. It's the Pythagoras formula " a squared plus b squared equals c squared"!

  • @nandiniagarwal7942
    @nandiniagarwal7942 4 ปีที่แล้ว +10

    I needed this one exactly... This is useful in my gravitation chapter.😅🥰

    • @Asrafmd117
      @Asrafmd117 3 ปีที่แล้ว +1

      come for conics😄

    • @umeshkashyap6070
      @umeshkashyap6070 2 ปีที่แล้ว +1

      Yeah, me too😅 I have physics exam tomorrow in which gravitation is coming

  • @mrbrown6421
    @mrbrown6421 ปีที่แล้ว +1

    I feel bad for that table.
    Excellent summary, sir.
    Thank you.

  • @AB-nb2ic
    @AB-nb2ic 3 ปีที่แล้ว +4

    Great, as long as the dimensions don't matter 🤷
    How do you use this method for a specific height and width?

    • @adamcherry1117
      @adamcherry1117 2 ปีที่แล้ว

      You can easily calculate the with the rope to how wide you want it, and you can calculate using pythagoras the height u need,

  • @GregorShapiro
    @GregorShapiro 3 ปีที่แล้ว +4

    It would be nice if you gave some info on the properties of ellipses. Such as the two focii, that this is the shape of the orbits of celestial bodies (including the Earth around the Sun) etc.

  • @captain-Dan
    @captain-Dan ปีที่แล้ว

    Exactly what I needed, thanks

  • @mehranashkanian2747
    @mehranashkanian2747 ปีที่แล้ว

    Well explained. Thanks

  • @georgevarghese238
    @georgevarghese238 3 ปีที่แล้ว

    Thanks for the video that I was looking for.

  • @fayjurrahman7218
    @fayjurrahman7218 2 ปีที่แล้ว

    Thanks dude that was so useful

  • @armandojmoreno7908
    @armandojmoreno7908 3 ปีที่แล้ว +1

    Use a non-elastic string, like a fishing line. --- That's why your lines don't meet.

  • @thiccchungus5362
    @thiccchungus5362 6 หลายเดือนก่อน

    Thank you sir!

  • @dishsoap5554
    @dishsoap5554 ปีที่แล้ว

    I’m three years late but thank you for this video, vary helpful

  • @manojinfo4388
    @manojinfo4388 3 ปีที่แล้ว

    Yap I needed this right now to draw an elecptical arch

  • @budaloops
    @budaloops ปีที่แล้ว

    Wow I’m interested in your string tool. Can you adjust the loop size like a lasso? I would like a flexible string tool like this to draw curves on paper and construct a logo design

  • @robertslater5706
    @robertslater5706 7 หลายเดือนก่อน

    Thank you

  • @mrbrown6421
    @mrbrown6421 ปีที่แล้ว

    Why does that special string
    have a washer and nail tied to it?
    Looks like a neck string I made as a kid.
    We had little trinkets hanging from
    our necks for some reason I cannot recall.
    Anyway....
    thanks.

  • @mehranashkanian2747
    @mehranashkanian2747 ปีที่แล้ว

    How far the nails must be apart to enable me to draw an eclipse at 60 cm length and 45 cm width ?

  • @josepachecosr
    @josepachecosr ปีที่แล้ว

    How do you figure out the size is the string and where to place the nails?

  • @juliush1297
    @juliush1297 ปีที่แล้ว

    You need to give exact measurements

  • @tapu_
    @tapu_ ปีที่แล้ว

    Just used this exact thing to solve a math question

  • @bwizzle4194
    @bwizzle4194 3 ปีที่แล้ว +1

    No its not you didn't say which is which. How did you get your measurements? What's the height and length of the ellipse? The idea yes, application absolutely not.

  • @abeshenam9967
    @abeshenam9967 8 วันที่ผ่านมา

    That's why SP+S'P=2a

  • @Maddie05007
    @Maddie05007 8 หลายเดือนก่อน

    PS+Ps= semi major axis distance

  • @AHalo2019
    @AHalo2019 ปีที่แล้ว

    🤩

  • @shawnellfurtado9949
    @shawnellfurtado9949 ปีที่แล้ว

    So where the nails r ther it is the foci of the ellipse .

  • @juliush1297
    @juliush1297 ปีที่แล้ว +1

    Your not giving dimensions so your video is entirely worthless

  • @butchczamanski9860
    @butchczamanski9860 ปีที่แล้ว

    Thank you