1640 DIY Graphene Parabolic Mirror
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- เผยแพร่เมื่อ 12 ก.ย. 2024
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I think there's a lot more merit behind parabolic troughs than parabolic dishes when it comes to diy solar to thermal setups. It also vastly simplifies the design of the heat collector, as it can just be a straight metal pipe painted with standard high temp black paint.
Yes a solar trough is very efficient and requires alot les in terms of control to track the sun.
Indeed. if that works. Perhaps pvc or pp panels can be aggressively buffed (perhaps with a car polishing bonnet and a dusk mask) then bent into a trough. and then focused on a vacuum tube thermal collector. the heat then extracted by heat pipes
@@AdricM definitely liking the vacum tube heat collector very highly efficient.
@@AdricM one type of panel, relatively easy to come by, is used aluminium printer plates. Ask some print shops if they have any for recycling. Not all use the lithographic method, but you may find one. They might charge you a small amount. The sheets are roughly A3 and not very shiny-reflective, and would require a fair bit of elbow grease to polish (less with a machine), but the graphite should adhere really well without that much work. Just not sure if the surface needs to be mirror smooth to start with. The brushed surface, at microscopic level, might reflect in all directions.
It seems counterintuitive a dark surface can reflect so well infrared light, thanks for sharing this! 🎉
Just use an old satellite dish for the parabolic, I have done similar by gluing on 1" mirrors works perfectly. It even off centers the focal point for sterling engine use.
Don't get fixated on the shape because the energy depends on the projected surface area of the mirror and the object you want to heat is not a single point. It's easy to get most of the energy onto the item and that's all you need. Even a box shape will work.
I believe I'll try a plastic roll up toboggan. I live in Alaska and should be able to find one. I also think a plastic saucer toboggan as well. I'll brush up on my graphite making and let you know how it works.
I’ve just started looking at solar cookers myself so this is of great interest to me. I also started thinking of building my own and was thinking of making a parabolic dish out of as heavy a gauge copper sheet that I can afford, paint it black on the inside and insulate the outside. Obviously Graphiene is better than paint. With this design concept it might be worthwhile to cover the dish with glass to trap the hot air.
@@terrafirma9328 that sounds like a good way to do it.
Cling film or pallet wrap stretched over a round container apply the graphine layer then pull a vacuum in the container.
Thanks for sharing 👍 !
This technique has got to be one of the cheapest ways to make solar infrared reflectors. It should work for box type solar oven reflectors too. Much cheaper than reflective mylar, glass and acrylic mirrors and highly polished metal mirrors.
Awesome 👍 !
In the days when I experimented with parabolic troughs and bowls, I used to use craft store mirrors, 30mm diameter round ones and 30 x 30 mm square ones, so cheap, $2 a pack for 50, still got heaps of them, also used Fresnel lenses to get stuff super hot, got a lot of really big ones from the local dump / landfill from old tv's.
I've seen a glass artist melt glass with a large Fresnel lens!
Fantastic insight! Recycled PET with changing shapes with heat treatment and layers of graphine on it can change everything in the galaxy of solar furnaces and solar thermodynamic plants by avoiding the brilliant noise of visible frequencies, cleaning up the environment and reducing the costs of reflective surfaces. Thanks a lot Robert.
Sooo cool!!! Maybe vacuume form a parabolic shape in thin plastic and then coat it, I would imagine doing it the other way round would create gaps right?
Only cote the plastic sheet then draw a vacuum behind it to make the parabla
Was thinking the same thing. First form, then coat especially when you are going to stretch the material.
Back in the day, when I was 9th grade, in science class we were divided into small groups and challenge with making a solar collector snd were judged on hot hot and how fast the temperature rises. All the other groups built some version of cardboard boxes painted black inside and covered with plastic wrap to minimize convection losses. Some had aluminum foil reflectors. I got my group to paper mache a bowl, line it with aluminum foil and spray painted black an aluminum can to place in its focal point. We covered the bowl with plastic wrap to minimize convective losses. Considering we were heating a small can with light collected from a larger cross section rather than the heat the black paint which heated a large volume of air, we easily won both quickest rise and hottest temp reached.
Had I known about graphene infrared reflectance, maybe we could have used pencil lead to line the bowl rather than paper mache a bowl and glue strips of aluminum.
Very nice. I don't even think about it. Thank you a lot. I'll test it to a satellite dish with Stirling engine. Thank you!!!
Make a vid of that. And sent it to Rob.
graphene sticks nicely to a sheet of silicone, which can then be stretched over a mould.
I've tried a few things with this, though my first was using stainless steel cooking bowls for ease of malleability and they are cheap. Now that I have a 3D resin printer and a home made vacuum former, I wouldn't recommend the former unless you're in need of a good thrashing of your elbow or want to come out looking like a lopsided Popeye. I made a buck to hammer the flat bottom of the steel into a bowl and refined the shape over several days of heating with a torch and hammering.
Having the buck, if I were to do it again, I'd certainly go the vac-u-form route!
By the by, the vac-u-form is really easy and can be made in an afternoon. I'd advise to bypass the usual method of pegboard and go straight to a 50mm hole in a nice thick slab of wood or whatever you have laying around that withstands high vacuum (acryllic is okay if really thick; I made the top out of 15mil plexiglass, but again I bought a large piece for this use). I used an old hardwood drawer since we were remodeling our kitchen at the time and I had one handy. Getting a large sheet of ABS warm at the same time is a little tricky with the standard heat gun, but if you have an oven dedicated for science use... 😁 Outside of that, nichrome wire or kanthal makes stupid simple arrays very possible.
There are a lot of good free parabolic calculators on the net that workout all diameter sizes, angles and focal points if you are interested, its a lot of fun playing around with these things.
Awesome, it has the advantage that is cheaper than silver and is easy to apply to almost any surface
I love this. So simple and inventive! Wow!
si bien simple e ingenioso, lo voy a poner en practica, gracias por el video amigo.
Pretty awesome 👏
Another series I can dig in to👀 I hope.
A tiger-sized breakfast bowl! Great experiment. I'm thinking that a stainless steel mixing bowl would be a good comparison baseline for such a reflector.
I was thinking a Jethro sized cereal bowl
@@michaelshultz2540 AHHH! Jethro Bodine and his vittels!!!
something else I found was that ebony pencils (really dark graphite color for a pencil as it is very soft pencil lead and is very large in diameter (the lead) was better at leaving a graphite like mark on the tempered glass than the vein graphite was for some reason.
I was going to use a 2 B pencil but now I’m having second thoughts 2 b or not 2 b that is the question 🤔😀
@@johnmcfadden9336 yeah from what I understand the extra hard and lacking in darkness of 2b vs the likes of ebony is due to clay or some such added to the graphite in the lead
Nice 👍, maybe line a drum with the plastic, then tumble some graphite with marbles or other heavy balls in it. Or is there some electrostatic forces at work that require the wool? Could try getting polypropylene Tupperware, making an air inlet in the lid, and using a heat gun to make the container part soft so it deforms when you inject air into the lid. It wouldn't make a perfect parabola, but it would be quick and cheap if it works 😁.
Use two parabolic cylinders at 90deg from each other:
You can create a parabolic cylinder by putting pressure on the edge of a flexible flat sheet. This is easily demonstrated: pull out a credit card (or anything similar) hold it between your thumb and finger lengthwise tips and squeeze the card. Do it right and it's pretty obviously parabolic.
An pivoting A-frame with a holding bracket can be easily designed and built to hold a 4x8 sheer of plastic and force it into a parabolic cylinder in the same way.
Such a reflector will concentrate solar energy into a line along the axis of deformation. However, if you angle that axis to the incoming light, that line can easily be shunted to one side.
If you place a second parabolic cylinder in the way of that light with an axis of deformation 90 degrees off the axis of the first reflector, you can concentrate the light into a point: the first reflector concentrates the light in the north-south direction and the second in the east-west direction; the second one will also require a greater bend in order to concentrate the light to the same place over a shorter distance.
Pivoting A-frames will allow you to vary the focal lengths by hand to get them to match, regardless of the situation. Two 4x8 sheets would concentrate just over 2 kilowatts of solar energy onto any given area: it need not be a point if you don't want it to be.
Furthermore, all of this is relatively lightweight meaning that you could put it all onto a sun-following platform that keeps the focus on the same point ON THE GROUND!! IE, the sterling engine or solar oven, or what-have-you can be any mass you like because IT DOESNT NEED TO MOVE to stay in the focal point.
Finally, this is not my idea. And the patent holder (I reached out to him but cant remember the name) wants it to be usable by anyone and everyone: he patented it so that no company can corner it in the market. So go ahead and use it.
As an aside, I've often wondered if this set up was the design of Achmedes "solar death ray" he used on the Romans. It is well within the engineering limitations of the time: sheet metal does just fine as as the reflector and wooden a-frame whose angles were controlled by screws would be perfectly adequate. Indeed, the focal lengths of each angle could be observed or calculates ahead of time and marked on the device so that a good guess at a ship's distance would be enough to roughly focus the machine.
What I picture is a three mirror system: the primary (N-S axis) reflector would be set to 45 degrees off the plane of the ecliptic, bouncing the light upward and the secondary (E-W axis) reflector would be set at 90 degrees off the ecliptic, CO that the culminated light path would be directly down. A third, flat reflector would be mounted on a ball joint so that the focusal point could be projected in nearly any direction.
The tertiary reflector would be angled at the target, the focal lengths would be modified on the fly with hand screws to concentrate energy on the target and the whole frame would be mounted on an equatorial mount so that it can be rotated slowly (by hand) through the day to keep it pointed at the sun.
.......
As a further, separate aside, I've also always believed this system could be made small and portable so that it could be hiked into a camp and supply all the heat energy a camp could want: hot showers and three hot meals a day. Add a small heat pump and you could have a solar powered refrigerator, too.
The reflectors would roll out like a roll top desk and be mounted on folding frames atop a portable and adjustable equatorial mount with a pv heleostat keeping it pointed at the sun. (The electric motors would require very little energy for this task so 2 hand-sized, flexible panels would do fine.) This could all be comparatively light and compact.
Of course, a tensairity system might be superior in compactness and weight but I can't help but design tings in wood first.
@@bmobert Thank You so Much!!
I've been thinking about this kind of thing as a preventative measure,as I am really annoyed with a Twit who has got a Moped, and thingied the Baffle so that it sounds Sooooooo Loud!! My poor dog Jasper jump's out of his skin, I'm also shocked into jumping Up and banging my head on the ceiling!!
Living in the UK means that I am somewhat limited ask to options for this type of "Annoyance"!!
Mwah Haha heehehe!! (Evil laugh,Rubs hands, Hehehe 😅)
Andrea and Critters. ..XxX ..
Ps, Just joking mostly about this one!!😁👍
@@AndreaDingbatt No problem. Good luck.
I live in a Northern California rain forest so I am very fire conscious. As such, I recommend a fabric cover to go over the tertiary mirror as you make adjustments so that your not causing damage as you transfer from one target to the next.😃
One of the designs the original inventer had in mind was a solar forge so that small communities could manage and reporpose their local scrap. Sounds to me you have something similar in mind. 😇😅🤣
@@bmobert Lmao 🤣💞 Yes!!
Thank you for your understanding,
I'm very fire 🔥 Conscious myself!!
I've worked in Scotland, and elsewhere, doing the "Burning" as a method of clearing out the Old Heather,Etc,
Giving the Grouse New Growth and shoots to Eat.....
It's actually The Glorious Twelfth today 💞 I am having a great Birthday!!
(Glorious Twelfth,is Open Season Day for Shooting Grouse!!)
Lol! But I tell folks that it's because I was Born,(12/8/1965!)
Sorry, I forget that we write it the wrong way around,Lol lol 😆💞
Do please forgive me for my exuberance!! Cold,Cold Beer 🍺🍺💞🙂 Namaste 🙏
Andrea and Potential Hangover tomorrow!! ...XxX...
Ps, I have also worked as a Burner, burning controlled fires as fire breaks as well....
Preventing any fire 🔥 getting to the Forestry commission forest Trees!🎄🌲🔥🎄🧕. ...XxX.....
I am happy to say that I was good at my Job!! 🌲🌲🔥🎄🔥🔥🌲🎄🔥🔥💞🍺🥴🍺🥰
💞🎆🎊💞🎉🎈🎉🎉💜🥴🍻🥂🍾😁🙂 Woohoo!!
Back to me 🍻 Beers...axx.
*Edit,Hi there, I hope you're doing well, I am Mr Dingbatt, I want to explain my Missus is, Enjoying herself a bit too much!!
Thank you for being such a great sport, and you have been very kind,
Andréa is just a little bit tiddly....
so I hope she's not bothered you at all?!
Cheers Mate!!
@Andrea Dingbatt I lived in Moscow for 3 years, so I'm used to reading dates in the European fashion and can usually deduce what's intended. (I also inherently understand temperatures in Celsius from about 7C to about -30C, but I need to use Ferenheit from about 45F to about 100F. Which reminds me of a joke about a Brittish man whose about to marry a Scottish woman of "nine stone," sight unseen.)
Can't say as I mind exuberance, regardless of its origin. 😃 As such, it is my strident wish you enjoyed your open-season/birthday! And may your "fire in the pipes" (as the Russians call a hangover) be so slight as to be Non-existent!
And allow me to assure one and all this conversation has been no burden at all. Indeed, among my most enjoyable online interactions.😉😊😇
Cheers!
Reflective telescope parabolic mirrors are made by grinding glass blanks.
Cool!!! That answers some question. I thought about.
Cool stuff ! In my mind , shaping a sheet of polypropylene into parabolic shape , shouldn't be so hard (you've done much complicated things on the channel). Cutting circle in some plywood (or MDF) , some heating units under it (for heat softening) and a air compressor (of course , the contraption should be air tight , excluding the valve for air ) should do the trick. Many videos on pressure forming different plastic materials on You tube ...
Coat a thin sheet of plastic with graphene then put it over the opening of a chamber in which you can pull a vacuum. If there was a way to fix the shape while it was under vacuum then you would have your parabolic surface with less fuss.
Hey rob, since the grapheme mirror has such a high infrared reflectivity, would it get cooler when used at night (radiative cooling)? If it does then, we can put an infrared filter over it we could use it in the day as well?? Always inspired by your videos .
I too would be interested in his take on radiative cooling. Living in the Sonoran Desert it would make my life so much better, lol
@@vthomebrewer There were some folks that did a simpler solar cooker they called a solar funnel. Used the basic aluminum foil They noticed when they pointed it at the sky at night, when there wasn't anything over head - no trees, so sides of buildings, no clouds, nothing that could reflect, that the bottom of the funnel got cold instead of heating up.
@@colleenforrest7936 Hello there, I've been watching this Man who is living by being intentionally homeless and he is going across the US with his Sheep, he lives in the little trailer that the Tip/Rams pull as he walks with them, and his Ewe's graze grass verges, and also he helps farmers who can't afford to pay for Help.
He shows people who are homeless how to make this a good living!!
Apart from the milk from the sheep, he barters,assists and teaches, for the other stuff that he needs!!
He was Cooking using this method, like a Tube and I also believe that he's using this as a means to keep Milk Cold as well!!
Anyway, I can't remember the name of the channel, but if you know or if anyone else here does, please let me have the link for the TH-cam account he's got please?!!
(I'm not sure why, but I thought that it's 123counting 🐑 Sheep?! Or homeless?! ~123~????!!))
TIA if you are able to help me with finding it?!!
Andrea and Critters. ...XxX... .
Ps, I am sorry for being a bit wobbly today is my birthday and I have had a couple of nice cold beers!!🍺🍺
Hence I am a little impaired!😁🎈🎉🥴
@@vthomebrewer Woah! You live in the Sonoran desert?!!
I bet those Scorpion's will be like millions of Violet star's when you use a Blacklight at night!!
(Those Toad's, I am interested, do they Survive it, when folks use them?! Or are they dead because of what is done to them?!)
Honest Question from a UK biologist and Retired Veterinary Nurse!!
(It's Okay I am Not asking to have Any posted to me,Lol, I am just interested if they are to be let out unharmed?!
Namaste 🙏
Andrea and Critters. ...XxX ...
@@AndreaDingbatt did a search. I think it's 123homefree
In a TH-cam video on the GreenPowerScience channel, they took a metal trash can lid and stretched a solar reflective film over it, then sucked the air out through a small hole in the lid. This formed a parabolic mirror. Maybe something like that would work?
Veeery interesting 👍🏾
Super cool. Front surface too. Wonder if I could electroplate to it? Edit... Robert already played plastic. Thanks
it would be really super easy to use a vacuum former to make a parabola, prop makers use them all the time to get funky shapes
That's interesting, at Malaga university Spain scientists out a dot of graphite ink connected to an led on a t-shirt had someone wear it, the led lit, they said the human body ir emissions powered the led thru the graphite
@@terrafirma9328 I'm about to make a spriggan suit 👽
Easiest...should be in quotes...is spinning a liquid in a container. Surface forms perfect parabola. So, mix up some plaster of Paris...kinda runny, put on old record player turn table, spin til hardens. You got a mold for a mirror. Drill a bunch of holes 1/8 inch or 3/16ths..then vacuum form the plastic with a shop vac and a heat gun. Like I said easy.
Another way to create a parabolic mirror is to dig a hole or make a mound in the shape of a parabola. You then apply concrete evenly all over the mound or in the hole. Another option is to use a mortar spray unit to spray on layers of either concrete or Aircrete to the mound or shaped hole. The final step is to let it cure and either glue mirror tiles to it or to apply a reflective paint after smoothing the surface with a grinder and then build a heavy duty base. In the case or aircrete you can use regular fasteners but if you plan ahead you can incorporate them into the parabolic cement mirror, the benefit being size only limited by resources
I think ferro cement would work best in that application. It is easy to create the shape and the dish would be lighter. The embedded chicken wire also prevents cracking. There are boat made of it!
@@judyofthewoods Glad you commented about that, years ago I made a video called Aircrete Boat Invention and quite a few people who watched it commented on ferro-cement and all it's qualities, my method for the boat idea was to use the aircrete as the form and core of the boat, with a spray on durable coating to provide extra structural strength, but I digress as I'm rambling 😆
Ferro cement is an excellent idea
Great Knowledge...Fantastic Vid, Fill The Bol With Watt'er To Enhance Reflectivity, Maybe? 🧐🤔😎
I always enjoy your videos.
Probably comes down to design simplicity or efficiency, but I've often wondered why parabolic/surface reflectors for use with sterling engines rather than fresnel lenses, or something else that may not need adjustments, or at least as much, like a Campbell-Stoke recorder.
IDK if it is worth the effort as wouldn't you have achieved the same results with just a metal mixing bowl? It was interesting for sure and has given me food for thought.
It is nice. Thank you very much.
Question for Rob and for the whole community. Is it possible to make a mirror big enough to focus it's energy onto one of these Night Time solar panels? Meaning a solar panel that works at night as well as daytime.... Then would it be possible to use this daytime/night time solar panel structure to power a sterling engine?
Try it on Trihedral mirrors Rob......
If it reflects, does that imply that the space behind it will be cooler and can one protect the graphene layer from the environment (rain, etc)
Polypropylene being a thermoplastic, all you would need is a parabolic male mold, wood even, heat it in the oven to make it pliable, form the near net shape bowl to the improved shape, and Bob's your Uncle.
could this method be used to just "paint" something because you like the graphite colour?
Then coat with a clear varnish to avoid smudging? I believe the outcome is superior to any spray can with "graphite" colour on the label.
I've tried that to make a gesso covered papier mache item look like cast iron. It looked fabulous, but the graphite did come off easily when touched. On another test item I tried covering with a satin varnish, but the effect was totally lost. If I remember rightly, the varnished graphite turned black. I think the "graphite colour" is partly due to some of its reflective nature, lightening it somewhat. When in a heap, the microscopic platelets will only reflect where the surfaces are facing outward, so it tends to look darker. When polished, the platelets align and give a lighter "grey" colour.
Maybe use a bit of plexiglass. Or lexan, probably a dark colored piece, secure it to a form, with a perimeter support, hear it in an oven, while slowly adding pressurized air, 1psi our less heat until it has a parabolic shape, let it cool, and 🤯 BOOM trim the edges and graphitise it and there ya go!!... Boom Roberts your uncle!
Love this Rob. Any tips for waterproofing this? Parabolic is of course the way to go, but if you want some exposed to the elements (especially in the UK), some kind of waterproof layer might be needed - I'm assuming the graphene would wash off pretty quickly unfortunately?
I have rub applied it on polyethylene before, and it gets embedded quite well, it doesn't wash off even if you wanted it too. BTW I mix my graphite or graphene with isopropyl alcohol before rubbing, to save your lungs and avoid the powdery mess
@@magabesse great little tip there, thanks! I may have to give this a go. Especially as I have loads of isopropyl alcohol around (never try to make your own hand sanitiser) 😂
Is burning magnesium powder into Exfoliated Graphene also good to expand.
Uhmm... Graphene will 'emit' almost perfectly when it reaches 'thermal equilibrium' with the source (Kirchhoff's Law). That plastic substrate is going to be mighty hot by then (due to being in physical contact with the graphene. At the distance we are from the Sun it won't be more than 128 C and of course, minus the heat energy lost due to conduction and convection. Graphene is not specular in this form AFAIK. So the surface will emit infra red photons in all different direction.
😲
ok so glass and acrylic are out, but Polyethylene and polypropylene are in, what about PET? or poly carbonate? I am guessing Vinyl will work too in some instances at least since I have used pencil to mark the piping for measurements before cutting. But I wonder about the vinyl sheeting like used to coat windows and such that has a slight stretchyness to it.
A cheap Teflon wok should give you the same reflectivity with a better curve for $20-30 USD. Mylar would be super cheap, but it doesn't reflect as well. I would mow my grass with a robotic laser if I could get away with it.
Hey mate are you going to have another build competition I would like to give it a go
There has got to be a vacuum formable plastic that will accept the graphite coding. I wonder if it would actually bake into the plastic maybe making it more durable.
Where do you purchase your Graphite from or which brand is use in this Video?
I guess it will help grinds a surface that cloud help make it good for telescope mirrors
ossum
Is there any HSE considerations that need to be managed when working with graphene powder?
Could you bind the graphine in say laquer paint and spray it over your desired shape?
I think it needs the elbow grease to polish the graphene into shiny shiny
LASER INDUCE GRAPHINE UPON SURFACE.. or TURN Tree WOOD into a SUPERCapacitor BY Laser Inducing Top with Graphine Graphite then BOOM = Superdiaelectric device
What if you stretched a balloon over the top of the bowl it should work then rub that
If one used the vacuum method with a mylar sheet or other plastic sheet to first make a parabolic shape, might this then be used as a "resin mold"? The idea would be to pour liquid resin into this parabolic shaped sheet. Gravity would cause the resin to settle at the bottom of the well. So, if the whole thing were placed on a horizontal rotating turn table, might the rotation cause the resin to follow the shape of the parabola until it cured? Don't know if graphite would stick to resin.
Why hasn't anyone made a parabolic mirror shining on a sand pit with one metal side and sterling engines connected for home use. Just for night purposes when panels don't work ?
Why not just bend a flat sheet into a parabolic trough?
Maybe there is some small mistake but you say about japanese paper while showing chinese paper. It would be great if we could get all the doi number for those paper refered to. Thanks and cheers!
That's really interesting. I have an old satellite dish and was going to do something similar to Nighthawk in Light... Now I've seen this I wonder if a super lowtech way could be to get a pencil and scribble all over the fish... Then rub the resulting marks and dust with a bit of felt.
Might that work anyone, or will the graphite not work effectively?
Pincil leadbwould work fine id just grind it up and maby tumble it in a rock tumbler for a few hrs to get it nice and fine.
Pencil lead has a wax binder.
@@UberAlphaSirus that's true, I forgot about that.
@@UberAlphaSirus ah did not know that. Wonder if old copy machine toner would work.. but then you can buy pure graphite pretty cheep. I have an old can of it full from the 50s that i found a long time ago. It's about the size of a 3lb coffee can.
@@michaelshultz2540 toner has a plastic binder, laser charges the paper, toner sticks to paper, heat roller melts it on to paper .you can get graphite cheep as chips. It may not matter at the end of the day. Shiny is shiney. And pencil leads conduct electricly on paper. You can make a makeshift soldering iron with a pencil and an AA
I tried vein graphite rubbed on to glass and it barely took at all, is there any secret sauce to say tempered glass that would make this harder than say other glass?
understand I was attempting to make as close to a sheet of graphene by peeling what I rubbed down onto the glass off, afterwards by painting on it and peeling the paint.
Perhaps vacuum forming might work.
anyone know if I should wear protection when using this? I've read it's dangerous for the lungs
Rob please don't stop making FWG Graphene ink, I designed a solar panel that uses it, and if I can get it licensed, we'll need a LOT of ink ;) Regular carbon ink just doesn't work.
Where's your Control?
You never measured the surface temperature of an identical 'untreated' bowl , and you never measured the focal point temperature of an 'untreated' bowl ... etc..
Regards.
Uhh... does this work on pvc too?
Im thinking of cutting an big old gutter pipe open and use a heatfan to form it into shape
On graphene, what's your view on the internet chatter about Graphene Aluminum ion battery. Is it just PR?
where can I get this in the UK please buddy
Ah graphene!
That reminds me of the monstrocity of a capacitor you built several years ago.
Does it still work?
Could you make a graphene drum head?
What about durability?
Is it me or did that bowl shrink?
I'm poor I realized that most my use of electricity is mostly boiling water and freezing water, if I replace meat then it's only boiling water, I'm always looking for stuff like that.
Satellite dish..
Jahhhhhh gevonden😍🙏🛸🙏😍
Oeps not jad😂 mabey the one after where you masher the heat
Does your now reflective bowl,
give you a hologram affect?
I seen a reflective bowl in a toy
store years ago that when an small
object in the center of the bowl,
the object would appear to hover just
above the bowl when you observed
it at a specific angle and distance.
You don't revlect sunlight your particles releas towart the more thentional side between eurth and the sun.
And taces inside the dime tional layer it is within from and dragg some extra less negative space inbetween oll particles from the night side to the day side in reflecting teghnolegy of chame trails whay our layer becomes less everige negative less thentional diverentionals less ratios less heath
I watch further 😋🙏😍😋
What happend😍😀😀😀
Your shadow of the paper togheter with the interaction of wat we experience as sunlight
Thermometer 😍(-100)
Sunlight was thentional bit not jad diverentional diverentional was olsurved in to the space inbetween around and within the carbon😀😍
Than there is onley thention towart some thentional divrlerentional between the loop of the thermometer😍
Than the paper came .
It takes to release from towart the sun direction thentional diverentional .
It tace I'd dragged along and has to release to where it is able and shadow was born
Shadow (-80😍😍
-80>-100 ratio for lobido.
Numbers are onley there to see diverentional this is actualy without numbers multidimentional😍
Your exeleration of masterminds chainced started when you put the shadow above😍
O jahoe I am olways so happy and in love with the knowledge💜🛸
I watch further .
Beautiful sharing to create more monotome interaction behaviures 💜 harmonisation braiker in wat we as a colective experience as reflection
Thank you💜 and oll 💜
Oll injoy beïng🖖🌈🍀🌳🍀
We a Lot of sun
He didn't said 99.9% Reflective to every wavelength of light....
Also 3D Structures of Graphene aren't as Reflective because Light Absorption from The Dark Surface Get Scattered among the 3D patterns and get Catched and Split up from the Graphene Atomic Structure.
Prove me wrong...
But do not Spend 26 Millions in order to do so... do like this man :
Rub "Really Really Hard", with all the Royal Majestic Grace you can possibly apply, some Graphite in a Boul and test it...
Now i wanna Know what happened to the 99,9% of the rest of the Wavelength Spectrum of Light‽
'I wanna Know , I wanna know!'
[Just for Her Majesty to Know:
The whole South Africa Project was Calculated to be 26 Millions $...
As a Complessive Price...
Power Production & Grid,
Maybe not power storage...
But if they Connect to Congo Grid they can always use their Damn Big Dam in order to Hydropumping its water Back to Creating a
'Hydro-Pumped Energy Storage' for some Tw/Years of Electricity Storage basically at the Cost of some tube and a Big Water Pump.
It should just take Her Majesty Effort to Remove King of Belgium and,
In General, Kaiserian Relatives of the Infamous Gotha Dinasty from earning and Exploit those Territories Even More since they already did Too much By Killing 15 Millions Human while Menomating the Others...
80 Billions American Dollars Project Involving Anyone even Remotely Close to Their Thinking is already to be Considered as A Threat.
Not as Important as a Biological Threats, But still the Biggest Economical Danger of Continental Africa.
Thanks GCHQ for the Attention!
I know without any Laser involved your Skills in Surveillance are Pretty Bad..they probably allocated you as a Human Bot for Internet Surveillance...
Basically what NSA was Until they discovered that Monkeys were more prone to defend the ones that resembled them at 99% of DNA..
Because: " if they were so similar they couldn't possibly being Evil."
Well I tell you what, due Same Nerve Related Hyppocampal/Prefrontal Cortex Destruction brought from SV40 Proliferation, for sure they were as much Stupids. ]
I have some Graphene powder to experiment with. This makes me want to take a crack at making an Axicon reflector (Reflaxicon). It won't focus light to a point, rather it will have a focal line along the axis. The long focal line is a poor way to concentrate light compared to a focal point, but it has some advantages if you don't require higher temperatures. Because the pseudo-bessel beam produced is "self-healing" in the sense that it can illuminate behind obstacles near the focal line, I could stick a heat pipe in the axis and bend it into a series of flat coils, like so, to catch the rays:
Sun ★≈≈≈≈ @--@--@-⟩⟩ Axicon
You can then bend the heat pipe back down through the axis to dump it in a heat exchanger behind the mirror. Even though it may be better to use a short focal length Axicon to achieve 2-3 times higher concentration on a single coil, I have an inkling there may be some trade-offs, and bottlenecks in throughput due to factors like heat losses that limit efficiency at high temperatures, which could be overcome by forcing the working fluid through multiple coils with a longer dwell time to overcome the lower solar flux.