FIND THE CENTER OF A CIRCLE IN 37 SECONDS, THE REST IS PROOF OF CONCEPT
HTML-код
- Опубликовано: 10 июн 2024
- The first 37 seconds is all you need to know = circle fits into a square, done.... other YT videos make this process way to complex.
Greenpowerscience.com 
Наука
Cut a square, corner to corner lines = circle center. Other youtube videos make this way to complex....
We will be making can Stirling Engines that are different soon.
Don’t forget to pin it
Your parabolic mirrors are the best! Always thought we’d have 3d displays from them someday. If they’re coated with epoxy while spinning would it protect it?
@greenpowerscience Which do you like better for solar cooking: Fresnel (magnifying) lens or parabolic mirror?
Also do you think you can melt stuff with a telescope or a pair of binoculars like you do with a large fresnel lens?
Wonderful to see you posting videos again Dan. Best wishes from Canada!
Just as he starts posting content like this again, the masons will disappear him for revealing their secrets 😀
We all miss Dan's videos and Dan himself come back Dan
I would just like to thank you for inspiring my life from my youth to this moment.
I appreciate your videos, your explanations, your way of distributing knowledge.
I hope you are well.
Thank you so much for the awesome comment and for enjoying or videos!!!!!
Best way is to take a ruler and draw 2 straight lines accros anywhere and draw their median lines with a "compass" and they will meet in the absolute middle. Geometry is the key. Nature is complexe, but very simple.
The compass can be a pin/string/pen contraption.
Care to rephrase all that?
@@abundantharmony 1- take a ruler and draw 2 lines accros the edges of the circle. 2-find the middle of those 2 lines, take a square and draw those 2 lines
Result- those 2 final lines will cross at the exact center of that specific circle. (Do it multipple time on the same circle starting with different lines to practice the technique)
You can do it very precisely with a compass and a straight edge. This methode dosent require any measurements. It works best with large circles. You can also use rods and ropes with levels or lasers and geolocation measurment devices for even bigger scale (ex.middle of a city).
@@sk8pkl Bit difficult for curved surfaces, no? I don't see how a ruler would work at all. That is the whole point of the strings.
@@ddpxl indeed, a ruler or a string makes a perfect straight edge. The best marking tool for a curved surface would be what we call a chalk line... Wich is a string. Yes. You are right.
For large circle like swimming pool,draw two chords ,the perpendicular bisectors of those chords meet at the centre of the circle
Thank you for all of your posts!
I'm assuming you mean "if you don't happen to have a speed-square handy"
another solution is to use intersecting arcs whose centers are on opposite edges of the circle you're trying to bisect.
if the circle is really big... like you're making a circular foundation for a covered astronomers observatory, your bust out your multiples of three four and five
Glad you’re back Dan !
When I saw the drink can inside the other can I thought you came up with a great cooler idea for keeping the beer cold lol. I am still going to try it though. Great tip on finding the center of a circle.
How to find the center of a circle put a little hair around it
great to see you back!
Where have you been for a year?
I've missed you being online and missed your wonderful videos I hope you're doing well
Can I use the mirrors that you make as telescope mirrors?
Dude, where's you at, mate? You make great videos.
Looking forward to the sterling engine build
👍🤓
Brilliant methodology. Especially the one with the strings.
This is awesome information to share. Thanks Dan!
I like this method, thank you for sharing.
It's really nice to see videos from you again. 🙂🙂
Nice. Thank-you for sharing.
I have a Rand Solar Evacuated Tube that i am designing a stand and autotracking and temp controlled holder for, would you like to know more and possibly do some consulting and collaborating on?
Great work
hey man your videos are amazing! I was really surprised at the video of creating a fresnel effect with just a plastic and water, I wonder what would be the easiest way for someone to make the fresnel effect, could you make a video about it? thanks and stay well!
Hey! U're a pretty sharp cookie! 👍
That's great knowledge to share my brother ✅
why not use thales theorem. place the square with the 90 degree corner on the edge of the circle. see where the two short sides intersect the circle and connect these two intersection points. the middle of this line is the middle of the circle.
no need for paper and cutouts
"90 degree corner on edge of the circle" seems less precise tbh.
Also it won't work on the parabolic mirror or any other "non-perfect" shape.
the definition of the speed square that he used to make the square to begin with... also the sheetrock Square
however I'm assuming that the spirit of the challenge requires that you don't have those tools handy
there is one other method which involves drawing two intersecting arcs whose centers are on a line that intersects the circle... the points where the two arcs intersect form a line perpendicular to the first line... so if both centers of the arcs fall on the perimeter of the circle then the line perfectly bisects the circle. use the line that you just created to find the perpendicular points that bisect the circle in the other direction
Thank You for your videos, I miss you guys,
If your parabolic mirror is twisted within the rectangle you drew you’re gonna miss the center...
Maybe place the mirror’s reflective side up and lay a level across it. Once level place some water on the mirror’s surface. A bb might work too.
Dan, good to see your videos online again. jim in central florida
I havent seen you make any new videos in a long time. How've you been man? Why havent you been making videos as much? Just curious. Your channel has some very good content.
Glad to see the videos coming!
Sorcery!
Great tip and a good video 👍
Cool ...a stirling engine is one of my projects thank you.
I have a design around this with cans....
ruclips.net/video/GqIapDKtvzc/видео.html
Lost you and happy I found you again. I see your still making good videos as always. Good to see you Dan R
Yay, welcome back!
Great idea
Will Mylar reflect 99% of UV, Visible light and Infrared rays falling on it? Is it possible to make the focused light from one concave mirror go into a cubical box via a small hole(point sized)? Could you please make a video on it. Thanks
Thx for returning back 2 utube...
Pretty cool, maybe a faster way to find the center of the parabolic mirror would be to drop a BB or ball bearing in it. It should, in theory, roll to the center, so long as its level.
X topic - surely most know of the three way compressor free absorption refrigerator,but why electronic induction isn't being explored as heat source ? Spinning magnet on copper tubing heat ?
That’s genius. Now aside from doing Solar I’m going to use this for making aircraft cockpit panels. Each gauge has a large round hole for the face and four screws on the diagonals to hold the gauge in place. Once the gauges hole is cut I can never get the screw holes perfectly right… I can now 🤣
What happened to you no more videos everything all right down there in Florida?
Love this💜
Simply genius method for marking the center of a parabolic dish.
Or just put a drop of water on it
@@plur_ndbn and what if it isn't level?
@@russellborrego1689 Then geometrical center will not real center also
@@plur_ndbn exactly. If it's not perfectly level, then it's not the center.
@@russellborrego1689 and cardboard will not show center because it show geometrical center
Pretty useful!
If only he uploaded videos regularly
I'd draw half the diameter and make a circle off the side from two points. Where they intersect...
NICE ONE Dan. good to see you posting thank you for the cool tips in the uk energy prices are rising like mad. ways to make life cheaper are methods worth knowing and stuff easy to hand. thanks
You can find the center of the circle without cutting.
1. Place circle in the 90° corner of the cardboard
2. Draw two lines & diagonals
3. Place cardboard on top of the circle, align with 90° corner and punch hole.
Two arcs made with string = to radius , made from the diameter .
Basic geometry,a circle can be inscribed in a square
Make more videos Dan
hi, can we work on a project? i have some interesting ideas 💡
Its the simple things that are the hardest to get right! Excellent job! Glad your back!
Yes he come back to sleep again and with out denise which i care about
You count to four very well
Dan is or was back? What happened??
Thx😀
Thank yu
What about the center of a sphere? :D
2 circles to square my father shown to me. That method is long and takes more effort to the unlearned.
We miss your videos
See you at the Kingdom Hall!
nice!
steve-o? that you?
CERN response required 😊🧐
I can do this with my naked eye
I know but, watch some other YT videos = 3 hour process 🤣
LOL.. Love your content Dan! You were the one that got me into solar power and Fresnel lenses back in the day. Looking forward to purchasing one of your lenses soon
less accurate, possibly faster way is to get a string and cut it to the same diameter of what you are trying to find, then take said string and fold it, draw a dot on the crease and you have your center? i like your method since i lean more towards perfectionism.
It's easy to find the center of a square. What you have proven is, it is easy to find the center of a parabolic dish, using your method.
Attaboy.
Where is denise
🥰
What happen to you guys? No more experiments?
Hey Dan I've sent you a couple of e-mails and no responce 😔 I'd like to hear from you before i make a purchace . Thanks
Good idea, but this will not work on that curved surface just as your first "pop" at 7:04 shows. You saw it didnt work, so you needed a second "pop" with better aim. That is not the true center. Depending on the size, curvature and the friction between the string and the surface you could be off really badly. On your setup I bet you could pop those lines anywhere around the true center point inside a 20mm diameter circle if you wanted to.
Vsauce brought me here 🎉😊
Upload new videos buddy
"FIND THE CENTER OF A CIRCLE IN 37 SECONDS" But the Videos is 8 minutes 10 seconds long...Something is not adding up in my math...
Math is a rather generous term for whatever just happened in your head.
@@AtlasReburdened that would be 453 seconds.. for the empty void between your ears. DA
@@IMRROcom Lol, of course your glass ego forced you to deflect away from the subject of your bent pseudo-logic, which somehow equates the time necessary to teach something as precisely equal to the time it takes to do it.
Got any other tricks, or is deflection and punching simple equations into a calculator the whole shebang?
The rest is a proof of concept
@@AtlasReburdened deflect WTF are you talking about pull the thing you are sucking on out your as. This is basic 5th grade math. You do not need 7 minutes for proof of concept. You must be on the short slow bus.
That guy spends his whole life for renewable energy. Did he pray once to god?
Will Mylar reflect 99% of UV, Visible light and Infrared rays falling on it? Is it possible to make the focused light from one concave mirror go into a cubical box via a small hole(point sized)? Could you please make a video on it. Thanks
Will Mylar reflect 99% of UV, Visible light and Infrared rays falling on it? Is it possible to make the focused light from one concave mirror go into a cubical box via a small hole(point sized)? Could you please make a video on it. Thanks
Will Mylar reflect 99% of UV, Visible light and Infrared rays falling on it? Is it possible to make the focused light from one concave mirror go into a cubical box via a small hole(point sized)? Could you please make a video on it. Thanks
Will Mylar reflect 99% of UV, Visible light and Infrared rays falling on it? Is it possible to make the focused light from one concave mirror go into a cubical box via a small, point-sized hole? Could you please make a video on it. Thanks