draw a PERFECT ellipse with a string and two nails
Тәжірибелік нұсқаулар және стиль
It’s easy to draw a perfect circle with a compass, but how about if you wanted to make a table that was an elliptical shape. In this video I’ll show you how to make a perfect lips with a string and two nails. You can also use two thumbtacks. By changing the string size or the distance of the nails you can change the ellipse shape. It’s a very simple technique and once you know how to do it you’ll use it a lot.
Пікірлер: 42
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 KZread trick. Thanks.
This would be a good video if u show how to make the specific size you need rather than just a random elipse
This is also a good demostration for kepler's second law
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).
The BEST video on this subject, thank you.
Thanks 🙏. Two minutes, no messing about. Appreciate you taking the time.
I feel bad for that table. Excellent summary, sir. Thank you.
I needed this one exactly... This is useful in my gravitation chapter.😅🥰
@Asrafmd117
2 жыл бұрын
come for conics😄
@umeshkashyap6070
2 жыл бұрын
Yeah, me too😅 I have physics exam tomorrow in which gravitation is coming
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
Жыл бұрын
THANK YOU. I've been looking for this information and you're the first person I found to have the answer.
@caltafacilitator9823
Жыл бұрын
@@TheDerekMast Cheers! Still don't understand why it's Pythagoras, though. Must be to do with triangles n stuff...
@smudger304
Жыл бұрын
At the risk of sounding stupid could you explain the formula please. What does ^ relate to?
@caltafacilitator9823
Жыл бұрын
@@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"!
Yap I needed this right now to draw an elecptical arch
Exactly what I needed, thanks
Thank you sir!
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
Thanks dude that was so useful
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.
Well explained. Thanks
Thank you
Great, as long as the dimensions don't matter 🤷 How do you use this method for a specific height and width?
@adamcherry1117
2 жыл бұрын
You can easily calculate the with the rope to how wide you want it, and you can calculate using pythagoras the height u need,
Thanks for the video that I was looking for.
@livefree6878
2 жыл бұрын
👍
You need to give exact measurements
Use a non-elastic string, like a fishing line. --- That's why your lines don't meet.
I’m three years late but thank you for this video, vary helpful
How do you figure out the size is the string and where to place the nails?
How far the nails must be apart to enable me to draw an eclipse at 60 cm length and 45 cm width ?
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.
🤩
Just used this exact thing to solve a math question
PS+Ps= semi major axis distance
So where the nails r ther it is the foci of the ellipse .
@adityaroy2257
Жыл бұрын
Yeah
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.
Your not giving dimensions so your video is entirely worthless
Thank you