I must say you're explanation and presentation are impeccable. You should really consider doing more how to videos. Maybe do some audio book readings. You're voice is very soothing.
You sir, should be teaching youngsters how to develop this kind of ingenuity. And you should be paid a ridiculous amount to do so. Very well done Roger. Yes, I am interested if further details.
I just remembered seeing your video in the past. I'm going to attempt making one and the lamp oil and other liquids "trick" is going to help me a lot. I'm just going to replace the solar power source with a wireless charging pad in a wood base so i have a little more power to play with. That way i can add some internal light so i can make it glow (faintly) in the dark (big cities and such).
As anyone whose done a few protypes from scratch will realise it's hard looking at the finished project to know just how much effort research and pure hard graft goes into getting it done. Doing and having to redo seemingly the simplest things over and over can drive you to distraction. Holding this globe in your hand and experiencing the illusion of it turning in your fingers is utterly brilliant and like Rog's other fabulous an imaginative demo's of scientific basics its taken to a level that amazes and delights. Wish I had the imagination and patience.
Hi Roger, Congratulations ! Yes, I can imagine there was a lot of cursing, but it looks good and works well. I was working on levitated globes when I hit on the Mova idea. The problem with levitated globes, at least for me, was that there were just another "plug it in" gizmo, like an electric toothbrush. The Mova globe is autonomous, and that is one of my favorite things about it. We use a very carefully designed motor that allows our globes work in very dim light such as 100 to 150 Lux. True, many environments have a lot more light than that, but my favorite way to appreciate this globe is to watch it in very dim light, turning very slowly. It us using less than one microwatt. If course, we all understand that if a globe retails for US$500, that might not be very strongly related to the cost of parts. There are labor costs and everyone from the factory worker to the retail store needs to be paid. Thanks for your interest and ,again, congratulations ! Bill
I was looking for transparent spheres made of two halves, I always ended up with those hanging decorative balls you have used. I was also very interested in using that sphere and filling it with rheoscopic fluid and stirring it with a motor inside.
Thanks for your comments Randy. I investigated rheoscopic fluids and came up with a solution for creating motion within an acrylic sphere. Check out these 2 new videos on my site: th-cam.com/video/MNLTKsfUvYc/w-d-xo.html th-cam.com/video/vfSvOi1KaLE/w-d-xo.html
Hola Roger, lo felicito por lo que hizo y por compartirlo. Busco una alternativa ya que estamos proyectando hacer esferas personalizadas con fotos 360 . Me interesa saber si podríamos recibir una Asesoria y montar un sistema similar. Algún correo
I was going to buy mova globe but after watching this I thought I would rather build my own & if I succeed it would be better than a mova please could you tell me what I need for 6" globe thanks Rob.
Hi Kamado, what is the problem that you are having? Have you got the globe to float inside the Perspex outer shell? Are you confident that the magnet inside the globe is rotating? If so there may be a problem coupling to the Earth's magnetic field. Try placing a neodymium bar magnet near to your globe, aligned with the Earth's magnetic field, to give it a boost. I hope this helps, best regards Roger. p.s. Please send me some photos of your globe.
My Mova globe stopped moving and I can see liquid on the top has been evaporated and after that it had stopped moving. Please suggest how I can repair this to move again.
Hi, if there is an air bubble inside your MOVA globe there could be two possible causes. Firstly the liquid has leaked out through the outer shell. If this is the case you should carefully examine the globe's surface for signs of s leak. If you find one you can seal it up by applying nail varnish or something similar. You will then need to drill a small hole through the outer shell and add water to get rid of the air bubble. Seal the hole by sticking a small piece to PVC tape directly over the hole. The globe should then work again. The other possibility is that the inner globe has a leak and liquid has entered it. If this is the case the inner globe will not be buoyant enough any more and it will sit at the bottom of the outer shell. When I had a similar problem I added some salt into the liquid to increase its density so that the globe floated again. Good luck, Roger
Thank you Roger your trick is working and I was able to do it successfully. Supporting your channel completely. Please visit my house as well and stay connected.
My final design used a 14cm beige globe of the Earth which already has solar panels and a very efficient motor inside it that runs on only 1mA. It costs about £15 including shipping. Here is a link to where you can buy one: www.aliexpress.com/item/32967119612.html?spm=a2g0s.9042311.0.0.1da34c4dBdjq20 You can carefully use a hacksaw along the equator to split the globe into two halves. Unscrew the motor from the bottom hemisphere and mount it in the centre of a horizontal bar which you can secure to the underside of the top hemisphere with its shaft pointing downwards. Small Neodymium disc magnets inside a short length of plastic tubing can be mounted on the motor's shaft. Lead shot (as used in divers belts) can be used in the lower hemisphere to increase the mass of the globe to have neutral buoyancy in water. The mass needs to be about 1.42kg You will need to buy an outer acrylic clear plastic shell with 15.6cm diameter for about £6. If you search Ebay with "15.6 clear bauble" you will find a supplier. You can buy 2kg lead shot for £15 from here: www.ebay.co.uk/itm/AKM-Scuba-diving-Ballast-shot-lead-weight-belts-weighting-Cheapest-on-Ebay/172659372281?hash=item28334cf0f9:g:tsMAAOSwrBReqY1u Best regards, Roger
I have yo that as usual, the devil is in your details! Finding a small globe that is translucent enough to light some solar cells is a bit of a challenge. I wonder if simply finding a practical way to make the globes themselves, on a clear sphere might be a better direction to go.
Thank you so much! May i ask how you fill it after glueing the globe together? Do you just drill a hole, fill it with the liquid and then glue the hole with uhu or do you use something else for the hole?
Yes I drilled a small hole in the outer Perspex globe before it was assembled around the globe then added water/alcohol to achieve the correct buoyancy. I then sealed the hole with a 5mm silicon rubber bung. Here is a link to a site on ebay that can supply the bung: www.ebay.co.uk/itm/334888931510?hash=item4df8ef90b6:g:bwIAAOSwFThkccUU&amdata=enc%3AAQAIAAABAORQbj%2BUpOzbC9VTYGygBO2Xzc6cceJiviOD8pQ6N9%2BRqT9cVuLXmO3TvHbjAc9bNIIdGXaij%2BElp4lvdAaUcFmdx8KaS5wHGpVDPND0Z5%2FCRdY7XUYCRTDFLxVLSiVUU54xOIScU68vFNLwnI56TiiZQz25htMt%2Fsk826jLFPBkdFLxr6yYHGSMLur9aO%2Fy0%2BZoxUy4caG5Z%2BufpK5JVJvN4JHhjb82x8tcsHPDXZLQpP0%2FhmeusZj0OkU6HI4btMW4JtTILXXKhX2FE0rDrU%2BSE6Qd%2Bf37UaZZc5rxE0sb8wSjJxGhFVbnvdS6KywP4%2FGQrelmMwl%2Bszl341VGIRc%3D%7Ctkp%3ABk9SR-a-yfrJYg
![PASULOL รามเกียรติ์ ตอนที่ 4 นนทกพบรัก [Ramakien Ep.4: Nonthok in love]](http://i.ytimg.com/vi/tMUQgmZzf_A/mqdefault.jpg)
I must say you're explanation and presentation are impeccable. You should really consider doing more how to videos. Maybe do some audio book readings. You're voice is very soothing.
You sir, are a gentleman and a scholar. Thank you.
You sir, should be teaching youngsters how to develop this kind of ingenuity. And you should be paid a ridiculous amount to do so. Very well done Roger. Yes, I am interested if further details.
I just remembered seeing your video in the past. I'm going to attempt making one and the lamp oil and other liquids "trick" is going to help me a lot. I'm just going to replace the solar power source with a wireless charging pad in a wood base so i have a little more power to play with. That way i can add some internal light so i can make it glow (faintly) in the dark (big cities and such).
As anyone whose done a few protypes from scratch will realise it's hard looking at the finished project to know just how much effort research and pure hard graft goes into getting it done. Doing and having to redo seemingly the simplest things over and over can drive you to distraction. Holding this globe in your hand and experiencing the illusion of it turning in your fingers is utterly brilliant and like Rog's other fabulous an imaginative demo's of scientific basics its taken to a level that amazes and delights. Wish I had the imagination and patience.
all i wanted to know ! thank you Sir , saved me a few hundred dollars
Hi Roger,
Congratulations ! Yes, I can imagine there was a lot of cursing, but it looks good and works well.
I was working on levitated globes when I hit on the Mova idea. The problem with levitated globes, at least for me, was that there were just another "plug it in" gizmo, like an electric toothbrush. The Mova globe is autonomous, and that is one of my favorite things about it.
We use a very carefully designed motor that allows our globes work in very dim light such as 100 to 150 Lux. True, many environments have a lot more light than that, but my favorite way to appreciate this globe is to watch it in very dim light, turning very slowly. It us using less than one microwatt.
If course, we all understand that if a globe retails for US$500, that might not be very strongly related to the cost of parts. There are labor costs and everyone from the factory worker to the retail store needs to be paid.
Thanks for your interest and ,again, congratulations !
Bill
Hi Bill, many thanks for your positive feedback. Best regards, Roger
Hi Bill, check out how I used Vodka to improve my DIY MOVA Globe:
th-cam.com/video/dKGzlxBhaRI/w-d-xo.html
@@rogercollins192 Hi, I tried to watch it but is private, can you share it with me?
@@omargasca2133 Sorry Omar, I edited the video and forget to alter the link. Try this link: th-cam.com/video/dKGzlxBhaRI/w-d-xo.html
This is great. Thanks.
Really cool. The bit I don't get is where are the solar panels? Thanks for sharing.
I was looking for transparent spheres made of two halves, I always ended up with those hanging decorative balls you have used.
I was also very interested in using that sphere and filling it with rheoscopic fluid and stirring it with a motor inside.
Thanks for your comments Randy. I investigated rheoscopic fluids and came up with a solution for creating motion within an acrylic sphere. Check out these 2 new videos on my site: th-cam.com/video/MNLTKsfUvYc/w-d-xo.html
th-cam.com/video/vfSvOi1KaLE/w-d-xo.html
@@rogercollins192
Very nice! Thanks!
Brilliantly done!!
Awesome. Thank you for sharing this!
Hola Roger, lo felicito por lo que hizo y por compartirlo. Busco una alternativa ya que estamos proyectando hacer esferas personalizadas con fotos 360 . Me interesa saber si podríamos recibir una Asesoria y montar un sistema similar. Algún correo
I was going to buy mova globe but after watching this I thought I would rather build my own & if I succeed it would be better than a mova please could you tell me what I need for 6" globe thanks Rob.
Amazing!!
Hi Kamado, what is the problem that you are having? Have you got the globe to float inside the Perspex outer shell? Are you confident that the magnet inside the globe is rotating? If so there may be a problem coupling to the Earth's magnetic field. Try placing a neodymium bar magnet near to your globe, aligned with the Earth's magnetic field, to give it a boost. I hope this helps, best regards Roger. p.s. Please send me some photos of your globe.
My Mova globe stopped moving and I can see liquid on the top has been evaporated and after that it had stopped moving. Please suggest how I can repair this to move again.
Hi, if there is an air bubble inside your MOVA globe there could be two possible causes. Firstly the liquid has leaked out through the outer shell. If this is the case you should carefully examine the globe's surface for signs of s leak. If you find one you can seal it up by applying nail varnish or something similar. You will then need to drill a small hole through the outer shell and add water to get rid of the air bubble. Seal the hole by sticking a small piece to PVC tape directly over the hole. The globe should then work again. The other possibility is that the inner globe has a leak and liquid has entered it. If this is the case the inner globe will not be buoyant enough any more and it will sit at the bottom of the outer shell. When I had a similar problem I added some salt into the liquid to increase its density so that the globe floated again. Good luck, Roger
Thank you Roger your trick is working and I was able to do it successfully. Supporting your channel completely. Please visit my house as well and stay connected.
That's excellent news. I hope that you enjoy your MOVA globe for many years to come. All the best, Roger
Are you able to say what model of motor and solar panels you used ?
My final design used a 14cm beige globe of the Earth which already has solar panels and a very efficient motor inside it that runs on only 1mA. It costs about £15 including shipping. Here is a link to where you can buy one:
www.aliexpress.com/item/32967119612.html?spm=a2g0s.9042311.0.0.1da34c4dBdjq20
You can carefully use a hacksaw along the equator to split the globe into two halves. Unscrew the motor from the bottom hemisphere and mount it in the centre of a horizontal bar which you can secure to the underside of the top hemisphere with its shaft pointing downwards. Small Neodymium disc magnets inside a short length of plastic tubing can be mounted on the motor's shaft. Lead shot (as used in divers belts) can be used in the lower hemisphere to increase the mass of the globe to have neutral buoyancy in water. The mass needs to be about 1.42kg
You will need to buy an outer acrylic clear plastic shell with 15.6cm diameter for about £6. If you search Ebay with "15.6 clear bauble" you will find a supplier.
You can buy 2kg lead shot for £15 from here: www.ebay.co.uk/itm/AKM-Scuba-diving-Ballast-shot-lead-weight-belts-weighting-Cheapest-on-Ebay/172659372281?hash=item28334cf0f9:g:tsMAAOSwrBReqY1u
Best regards, Roger
@@rogercollins192 Many thanks for the response
@@rogercollins192 I'v looked to buy and could not find it 😭😭
I have yo that as usual, the devil is in your details! Finding a small globe that is translucent enough to light some solar cells is a bit of a challenge. I wonder if simply finding a practical way to make the globes themselves, on a clear sphere might be a better direction to go.
I have checked but not able to find out any leakage but liquid level is coming down in last one year and it’s more than 5 year old now
Can we refill the liquid and which liquid we should refill in this. I am in India
What is the liquid inside ? This does not look water because this will evaaporate again after few days.
If I add water is there a possibility that will not mix with liquid already in this.
Thank you so much! May i ask how you fill it after glueing the globe together? Do you just drill a hole, fill it with the liquid and then glue the hole with uhu or do you use something else for the hole?
Yes I drilled a small hole in the outer Perspex globe before it was assembled around the globe then added water/alcohol to achieve the correct buoyancy. I then sealed the hole with a 5mm silicon rubber bung. Here is a link to a site on ebay that can supply the bung: www.ebay.co.uk/itm/334888931510?hash=item4df8ef90b6:g:bwIAAOSwFThkccUU&amdata=enc%3AAQAIAAABAORQbj%2BUpOzbC9VTYGygBO2Xzc6cceJiviOD8pQ6N9%2BRqT9cVuLXmO3TvHbjAc9bNIIdGXaij%2BElp4lvdAaUcFmdx8KaS5wHGpVDPND0Z5%2FCRdY7XUYCRTDFLxVLSiVUU54xOIScU68vFNLwnI56TiiZQz25htMt%2Fsk826jLFPBkdFLxr6yYHGSMLur9aO%2Fy0%2BZoxUy4caG5Z%2BufpK5JVJvN4JHhjb82x8tcsHPDXZLQpP0%2FhmeusZj0OkU6HI4btMW4JtTILXXKhX2FE0rDrU%2BSE6Qd%2Bf37UaZZc5rxE0sb8wSjJxGhFVbnvdS6KywP4%2FGQrelmMwl%2Bszl341VGIRc%3D%7Ctkp%3ABk9SR-a-yfrJYg