This video took 40+ hours to produce/edit/voiceover. My higher production quality videos never seem to get many views compared to simple stuff? Oh well, it was a good experience.
Really good video, full of useful tips. Excellent low cost collector. I made one of these reflectors forty years ago. Used commercially available ground and polished stainless sheet circle sheared. It worked OK, never measured it but I'm sure it would melt lead. College project in Phoenix. It was already 140 degrees on the roof of the engineering building.
Awesome video Dan. I love how you present your ideas on applied sciences and the results of your experiments from even 6 years ago! I'm always learning something new from you brother!
I believe that in ancient times someone suggested polishing shields and using the reflected energy of the sun to decimate an approaching fleet of wooden ships. I see now how this could have happened. Great video. Thank you for sharing.
How far away are the ships? How big were the reflectors? We’re they flat or slightly concave. The story is theoretical possible but practically not likely.
@executivesteps obviously someone had the knowledge or else it wouldn't be history. Unfortunately, we weren't there but it was unlikely that it was a fiction writer testing the waters.
The mylar has held up for 4 weeks so far with a vacuum. And when the vacuum is removed, the reflective surface is flat and near distortion free so it seems to hold up without expanding. The mylar can accept tight stretching when making. This prevents sagging.
Thank you for the nice comment. I thought this video would have been a bigger hit. Almost 9 months and total video views = what someone burning a cell phone gets in 2 days. Our videos are getting buried in search results for some reason. 94% of the views were driven by our website, or FB page and our RUclips homepage. Only 1,800 views from YT.
Love your Experiments ! Started watching years ago. 🔥 I have to make a solar water distiller to make drinkable water and also to cook with. This is the way 😎
Okay - one trick you missed (besides using decent plywood for a back) is once you have it stretched, to go ahead and do a pass with a hair drier. I THINK this will remove the last vestiges of creases - unless the blanket was heat-pressed, which I don't know why it would be. Mylar is apparently a good memory material and returns to its original shape with just a bit of heat. The sun won't heat that mylar up, but hot air will.
Thanks Dan, I live in the Philippines and this is going to be a big help in helping those in the villages to cook. I am home (USA) for the holidays. I just want to make sure I get the right blanket.
I like this concept ,it is the method that I have been looking for..Back in 1992 I polished an 8 ft diameter Cband satellite receiver dish to be used as a solar collector .The polishing of this dish took a long time and the reflectivity was only around 75% at the best .It did set lumber on fire.
Yes, then a thin spray of enamel paint to preserve it. The two I made are sitting outside in FL weather, while the humidity is lower than summers, they are both holding up well.
Very nice work, this can also be used with an old font (cast iron) radiators, mounted in a frame and a clear plastic cover to protect the radiator from the cold air. filled with water and connected to a storage tank of 200lt - 400lt. by fitting a pressure release valve and a central heating pump the water in the tank can be heated to 40-50 deg during the day. this tank can be placed in line with the other tank electrically heated to supply your bath or shower etc. by placing the new tank vertically and feeding in cold water at the bottom and taking the hottest water from the top, to feed your electrically heated water tank.. your ability to supply hot water is now doubled as you will be feeding the normal tank with hot water or well warm water rather than cold water direct in from underground.. result is you can take longer showers, fill a bath tub and still have gallons of hot water left.. the amount of electricity required every day to reheat the tank will decrease. and you save a fortune....
The first surface mylar will oxidize if placed on the outside years of exposure. Place the conductive first surface side, inside and mist with enamel paint. This seals the aluminum exposed surface and it will last years without turning golden yellow. The mylar is inexpensive so the front can be re-stretched every year or so with extreme usage. I have mylar flat mirrors that have sat in the rain and Florida humidity for years and they are still good.
I will have a video on a round mirror. I just made one in 15 minutes:-) It is like a drum and a near perfect parabola/spherical shape. The mirror flat is distortion free, vacuum it casts really good images on the wall. May be a first surface telescope option too. Will test with the moon tonight if the clouds go away! With a little trick, the wrinkles go away.
Hi Julie, im unsure about the electrical part myself, but the shut off valve / vacuum 's function is to change the focal length, ie: focus/ concentrate the light, so yes to use this to cook, you'd want to focus the suns light on the pot / pan, you will need to do the vacuum / shut off valve bit. The electrical part probably just makes the surface a bit more reflective, but maybe not 100% necessary
Yeah that barrel comment, well.. use the top 8-12 inches from a plastic barrel, use the Mylar blanket as this time, on the open back side make a air tight diaphragm of a stronger material like a pond liner, a lever connected to the center, a hand grip, squeeze the handgrip and lever to focus, on the opposite side a loop handle to steady aim.. instant focus mirror. Real-death ray. Add a HID LED and you got a hand held stage light. What a cutie.. (and I mean Denise) I enjoy the videos.
Your videos are great. I like that you put numbers to your projects and for this one show the square version has practicle precision. If I were to do one I think a 6 or 8 sided one would be almost as easy to build. Probably round over the inside edges with a router. For me practicle solar reflector applucation will be soil / mulch sterilizer of 55 gallon steel drum with aluminum foil over scavanged coroplast reflector. Don't know if Anyone has done this or not, seems obvious. Another low cost / low fabrication / universal parts availability solar cocentrator design uses a 4'x4' piece of masonite cut in a spiral with aluminum foil glued to it attached to 1x2 crosspieces cut to angle the around 2" wide spiral into a fresnel reflector. Use search term - steenblik spiral fresnel - redrok is an interesting hit. I think wind will be less of a problem with this design than solid designs.
for the small scale competition, I don't think the boys won fair and square. They can't use some technology that was not available to Archimedes. For the large scale, they accomplished the death ray but at 75 feet, it couldn't be that effective in a battle since the archers could easily target the mirrors from that distance. Nonetheless, Archimedes had the resources, manpower and money of a King defending his country so whatever apparatus he had must have been on a very large scale.
I have been looking, looking, looking for cheap reasonable solution for a green energy stainless steal boil tank. THANK YOU SO MUCH FOR ALL YOUR HARD WORK!!!
All mirrors are 2 way mirrors. All glass mirrors when coated have a first surface side but grey paint is added to cover the aluminum for protection in household mirrors. Get a good mylar blanket and stretch it flat. The side with the most light will be a mirror, the darker side = cloaked 2 way view. You need a brighter side like cop movies. Detectives in a dark room, interrogation is a well illuminated room. Either side will work, the light makes the difference. Swap the light swap the effect.
Your contributions to experimental science involving green energy are highly commendable and thanks a lot for sharing all your beautiful and practical videos. 🙏🙏🙏🙏🙏🌹🌹🌹🌹🌹❤❤❤❤🙏🙏🙏🙏
Watching this reminds me of a 1961 Adventure/Fantasy/Sci-fi ", Atlantis the Lost Continent". A dictator mad scientist has a giant mirror covered with crystals is powered by the sun and shoots a giant laser like Ray! Cool sci Fi effects! He fights with the hero in the movie and gets zapped into a skeleton by his own device that's swinging side to side by an Earth quake......
as soon as i get paid, im going to the hardware shop, i just made one of these stretching it over a medium bowl, managed a slight parabola by putting it in the freezer for a few mins and then was able to light a leaf with heavy cloud cover, i want to make one i can pull a propper vac on now
Something I've been wondering about for a while now is whether this would work with reflective plastic packaging from things like potato chips. If so, it would be a great way to repurpose it since supposedly it can't be recycled.
If you look into re felting a pool table from a company called Game Cloth they have an instruction form on attaching the cloth at given points to give it consistent grain and be equally tight in all areas.
Still amazing. Dan you ready for my idea? Tires car truck who cares they're free racing tires are the lightest , bind them together bailing wire. You want to make a long tube out of the tires.cap the ends with sheet glass. Those tanks refrigeration companies can't find a way to dispose of should work as a inner tube cut the top and bottom off join them with epoxy , welding would work but very expensive. Or how about pex tubing filled with glycol , a little pump to flow in the floors? Or maybe a bed ? Large sheets of stryofoam $12 sheet covered in mylar , 2 mil 100'X 48" ~$31. If you want cut the beads on the inner side of the tires once wire holds tires together run a bead in the gap , spray foam silicone maybe inflate a bicycle inner tube. Using the collector and the tire a good temperature should be had reducing dependence on other fuel sources. Would make a hell of a french bread oven ? Drill hole in tire for pex tubing to be directed , cut the beads running the tube should be easier once pex tubing is in stuff core with styrofoam chunks , news paper , or make a oven out of the space. Horizontal, vertical your option.
I would like to create a parabolic mirror based swimming pool heater to extend the swimming season.This is for a pool in US mid Atlantic region where sunlight is fairly abundant in the early summer and fall, but because the temp drops at night the water stays cold. I'm thinking of something that focuses the light on a set of black pipes. There would be no pump, I'm thinking the water could get very hot and cause flow thru the pipes.
Hello Dan, I love your videos, they're very informative. Have you ever tried this using a round form for your vacuum frame? It may not be worth the effort, but it seems like you could get a very precise focus. Since you use coroplast material, you could build the whole thing out of it. Using a few thicknesses to beef up on the sidewall , would increase the thickness of the side wall, making it strong. Just a thought. Thanks for the great video.
Of course you already know this but you're on the new Doomsday Preppers right now. That's pretty cool; I've been watching your videos for years. Thanks for recording them.
This video took 40+ hours to produce/edit/voiceover. My higher production quality videos never seem to get many views compared to simple stuff? Oh well, it was a good experience.
GREENPOWERSCIENCE: it is a great experience on my end, too.
Hi GreenPowerScience, how can i get something to burn at 10,800 degrees F? Thanks!
I think I love you.
@@HOLLYHOUSE11 HE ALREADY HAS A WOMAN. SO BACK OFF WITH THE 'LOVE YOU' STUFF.....
@@johnconrad5487 sounds like Maybe you need a nap.... And some Jesus or something... Or a cocktail... Relax.
Your generosity in sharing is unparalleled. You're the king of highbrow lowtech!! Thanks yet again!!!
Really good video, full of useful tips. Excellent low cost collector. I made one of these reflectors forty years ago. Used commercially available ground and polished stainless sheet circle sheared. It worked OK, never measured it but I'm sure it would melt lead. College project in Phoenix. It was already 140 degrees on the roof of the engineering building.
Awesome video Dan. I love how you present your ideas on applied sciences and the results of your experiments from even 6 years ago! I'm always learning something new from you brother!
Whaa
F
King of Random,salute,RIP.
F
8 years ago
I believe that in ancient times someone suggested polishing shields and using the reflected energy of the sun to decimate an approaching fleet of wooden ships. I see now how this could have happened. Great video. Thank you for sharing.
Archimedes!! 👍
How far away are the ships? How big were the reflectors? We’re they flat or slightly concave.
The story is theoretical possible but practically not likely.
@executivesteps obviously someone had the knowledge or else it wouldn't be history. Unfortunately, we weren't there but it was unlikely that it was a fiction writer testing the waters.
you are such a great asset to anyone learning in the fields you cover. Thank you and keep up the awesome work😊
The mylar has held up for 4 weeks so far with a vacuum. And when the vacuum is removed, the reflective surface is flat and near distortion free so it seems to hold up without expanding. The mylar can accept tight stretching when making. This prevents sagging.
Gotta love this guys "fashion sense". Truly a Florida Man!!!
Thanks a lot Dan, for taking time to answer. I take your solutions very seriously. Amazing and affordable.
Thank you for the nice comment. I thought this video would have been a bigger hit. Almost 9 months and total video views = what someone burning a cell phone gets in 2 days. Our videos are getting buried in search results for some reason. 94% of the views were driven by our website, or FB page and our RUclips homepage. Only 1,800 views from YT.
Metric System please.
Learn imperial sir
No@@hughjanus7131
convert it yourself
Yes
⠀
Si units rise up
Love your Experiments ! Started watching years ago. 🔥 I have to make a solar water distiller to make drinkable water and also to cook with. This is the way 😎
P
Entertaining and informative. I can see so many potential applications for this.
It's always fun until someone gets hurt, then it's hilarious! I absolutely love Denise reaction at 08.15
8:15
Okay - one trick you missed (besides using decent plywood for a back) is once you have it stretched, to go ahead and do a pass with a hair drier. I THINK this will remove the last vestiges of creases - unless the blanket was heat-pressed, which I don't know why it would be. Mylar is apparently a good memory material and returns to its original shape with just a bit of heat. The sun won't heat that mylar up, but hot air will.
Thanks Dan, I live in the Philippines and this is going to be a big help in helping those in the villages to cook. I am home (USA) for the holidays. I just want to make sure I get the right blanket.
Pretty stright foward and great instructor skills, that you Mr. Rojas.
I like this concept ,it is the method that I have been looking for..Back in 1992 I polished an 8 ft diameter Cband satellite receiver dish to be used as a solar collector .The polishing of this dish took a long time and the reflectivity was only around 75% at the best .It did set lumber on fire.
Yes, then a thin spray of enamel paint to preserve it. The two I made are sitting outside in FL weather, while the humidity is lower than summers, they are both holding up well.
Very nice work, this can also be used with an old font (cast iron) radiators, mounted in a frame and a clear plastic cover to protect the radiator from the cold air. filled with water and connected to a storage tank of 200lt - 400lt. by fitting a pressure release valve and a central heating pump the water in the tank can be heated to 40-50 deg during the day. this tank can be placed in line with the other tank electrically heated to supply your bath or shower etc. by placing the new tank vertically and feeding in cold water at the bottom and taking the hottest water from the top, to feed your electrically heated water tank.. your ability to supply hot water is now doubled as you will be feeding the normal tank with hot water or well warm water rather than cold water direct in from underground.. result is you can take longer showers, fill a bath tub and still have gallons of hot water left.. the amount of electricity required every day to reheat the tank will decrease. and you save a fortune....
Money cannot be saved, but nature and electricity can
Very well produced, thank you for taking the time to make this for us.
R u still alive bro 10yrs later
Dan, you my favorite backyard genius... still 👊
Thank you Cyber MacGyver. 👊
I second
I third
Your paintings were fantastic! I had no idea you both were so talented!
Very knowledgeable and obviously sincere dedication to the art and science of the craft!! generous sharing of hard earned expertise. Thank you.
The first surface mylar will oxidize if placed on the outside years of exposure. Place the conductive first surface side, inside and mist with enamel paint. This seals the aluminum exposed surface and it will last years without turning golden yellow. The mylar is inexpensive so the front can be re-stretched every year or so with extreme usage. I have mylar flat mirrors that have sat in the rain and Florida humidity for years and they are still good.
Haha, love the reaction of wife, doesn't get mad but will probably get even soon! That is the spirit.
It would have been even funnier if Her hair stood up and got all fuzzy .
I will have a video on a round mirror. I just made one in 15 minutes:-) It is like a drum and a near perfect parabola/spherical shape. The mirror flat is distortion free, vacuum it casts really good images on the wall. May be a first surface telescope option too. Will test with the moon tonight if the clouds go away!
With a little trick, the wrinkles go away.
Tesla's great grandson. :D
Gonna try that stretched mylar mirror in my aquaculture 3 in 1 root electrified hydroponic enclosure. Thanks man！
I was so totally expecting Dan to make all of Denise's 2 foot long hair stand on end with the charged mylar!
Hi Julie,
im unsure about the electrical part myself, but the shut off valve / vacuum 's function is to change the focal length, ie: focus/ concentrate the light, so yes to use this to cook, you'd want to focus the suns light on the pot / pan, you will need to do the vacuum / shut off valve bit.
The electrical part probably just makes the surface a bit more reflective, but maybe not 100% necessary
thanks for transfering this great knowledge i love physic power
Yeah that barrel comment, well.. use the top 8-12 inches from a plastic barrel, use the Mylar blanket as this time, on the open back side make a air tight diaphragm of a stronger material like a pond liner, a lever connected to the center, a hand grip, squeeze the handgrip and lever to focus, on the opposite side a loop handle to steady aim.. instant focus mirror. Real-death ray. Add a HID LED and you got a hand held stage light.
What a cutie.. (and I mean Denise) I enjoy the videos.
This is one neighbor you don't want to piss off, especially on a sunny day.
Your videos are great. I like that you put numbers to your projects and for this one show the square version has practicle precision. If I were to do one I think a 6 or 8 sided one would be almost as easy to build. Probably round over the inside edges with a router.
For me practicle solar reflector applucation will be soil / mulch sterilizer of 55 gallon steel drum with aluminum foil over scavanged coroplast reflector. Don't know if Anyone has done this or not, seems obvious.
Another low cost / low fabrication / universal parts availability solar cocentrator design uses a 4'x4' piece of masonite cut in a spiral with aluminum foil glued to it attached to 1x2 crosspieces cut to angle the around 2" wide spiral into a fresnel reflector. Use search term - steenblik spiral fresnel - redrok is an interesting hit. I think wind will be less of a problem with this design than solid designs.
for the small scale competition, I don't think the boys won fair and square. They can't use some technology that was not available to Archimedes. For the large scale, they accomplished the death ray but at 75 feet, it couldn't be that effective in a battle since the archers could easily target the mirrors from that distance. Nonetheless, Archimedes had the resources, manpower and money of a King defending his country so whatever apparatus he had must have been on a very large scale.
A BIG THANK 😊 🙏
I live in guatemala this will be a LOT of help
Six minutes and 5 commercials, just take away the desire to continue watching this great video
I have been looking, looking, looking for cheap reasonable solution for a green energy stainless steal boil tank. THANK YOU SO MUCH FOR ALL YOUR HARD WORK!!!
All mirrors are 2 way mirrors. All glass mirrors when coated have a first surface side but grey paint is added to cover the aluminum for protection in household mirrors. Get a good mylar blanket and stretch it flat. The side with the most light will be a mirror, the darker side = cloaked 2 way view. You need a brighter side like cop movies. Detectives in a dark room, interrogation is a well illuminated room. Either side will work, the light makes the difference. Swap the light swap the effect.
Thanks for the introduction to solar death rays. Now to find someone to use it on🤭
Your contributions to experimental science involving green energy are highly commendable and thanks a lot for sharing all your beautiful and practical videos. 🙏🙏🙏🙏🙏🌹🌹🌹🌹🌹❤❤❤❤🙏🙏🙏🙏
Les has a good TV show, the water bottle trick and clear plastic water lens would be a perfect fit. Happy Holidays!
Watching this reminds me of a 1961 Adventure/Fantasy/Sci-fi ", Atlantis the Lost Continent". A dictator mad scientist has a giant mirror covered with crystals is powered by the sun and shoots a giant laser like Ray! Cool sci Fi effects! He fights with the hero in the movie and gets zapped into a skeleton by his own device that's swinging side to side by an Earth quake......
I can only imagine this guy feels like a kid at the playground. I'm going to start getting into it too
Hulahoops n mylar. Thanx Dan!
Most fun couple on the planet, i am convinced.
It is interesting. Excellent method! Thanks
Excellent detailed instructions. Thank you very much.
Consider the shape of the square lens vs the round. There is little parabolic shape on the square.
Archimedes would be proud
Another Fantastic production! Thank you for this and all your videos.
What about doing a cone copper coil that tightens with the beam. Increased surface area might increase output
Phenomenal video. Great quality and very well put together. Keep it up
flexible glass with a mirror finish similar to what corning has developed would be an ideal material to experiment with
Noted, and added to the title:-) THANK YOU!!!
Fantastic! I got a new project for my weekend!
Yet another awesome video. :)
I hope you two are still involved in the art world too.
Real free energy!
How
Wow! You've explained it so well!
as soon as i get paid, im going to the hardware shop, i just made one of these stretching it over a medium bowl, managed a slight parabola by putting it in the freezer for a few mins and then was able to light a leaf with heavy cloud cover, i want to make one i can pull a propper vac on now
48 inches...very thoughtful of giving measurement in inches for the rest of the world..
The Rojas reflector should be mass produced and distributed . Fire and fuel was the catalyst of our evolution. Amazing times .
Best reflector solarpanel. U can easily take seawater and boil it to make driving water in pipe
lmao. "You can make your own seizure ray".... had me laughing. Good stuff!
back in 1978 when on holiday in the states i bought a pocket sized parabolic mirror, about 3 inch, it was a cigarette lighter.
That's an awesome idea. Bet if you did that to the top of a 55gallon drum you could easily cook with the focal point!
Something I've been wondering about for a while now is whether this would work with reflective plastic packaging from things like potato chips. If so, it would be a great way to repurpose it since supposedly it can't be recycled.
That is mylar, it works! 👍
@@0penEyesAndMind51 Oh, thanks!
What an AMAZING channel!
Thanks, Dan!
Thanks for all your inventions and projects Dan !
I really enjoy your channel
.....good stuff
Much more honest and down to earth than Myth B.....s :)
It’s funny how history omits talking about these things as if no one used them as lasers from ships or lighthouses as defense towers
Pensar que esas cocina solar las anunciaban en la revista Mecánica Popular hace más de 40 años
Myth busters need to watch this........they will have to do one of their shows
Excellent project thanks
"Honey, i destroyed the car tyres, we'll have to stay in bed today"
cool looks like it works great! Ill give her a shot and see what happens.Thanks :)
Please focus the beam with a secondary magnifying lens, that's the part Archimedes neglected to mention
raise it up higher.. nice job.
Uhhh, that was a Tim Russert painting. That's the coolest thing I've ever seen. I would buy that.
:-) Almost everyone wants to learn how to build stuff in 30 seconds or less. Tricky task.
New subscriber from Somalia
What an amazing experiment!
Awesome I love Archimedes
You two are amazing.
If you look into re felting a pool table from a company called Game Cloth they have an instruction form on attaching the cloth at given points to give it consistent grain and be equally tight in all areas.
Still amazing. Dan you ready for my idea? Tires car truck who cares they're free racing tires are the lightest , bind them together bailing wire. You want to make a long tube out of the tires.cap the ends with sheet glass. Those tanks refrigeration companies can't find a way to dispose of should work as a inner tube cut the top and bottom off join them with epoxy , welding would work but very expensive. Or how about pex tubing filled with glycol , a little pump to flow in the floors? Or maybe a bed ? Large sheets of stryofoam $12 sheet covered in mylar , 2 mil 100'X 48" ~$31.
If you want cut the beads on the inner side of the tires once wire holds tires together run a bead in the gap , spray foam silicone maybe inflate a bicycle inner tube. Using the collector and the tire a good temperature should be had reducing dependence on other fuel sources. Would make a hell of a french bread oven ?
Drill hole in tire for pex tubing to be directed , cut the beads running the tube should be easier once pex tubing is in stuff core with styrofoam chunks , news paper , or make a oven out of the space. Horizontal, vertical your option.
It's blinding through the video, bro!😎
Thank you for the video!
Feet and inches is good. Especially for those of us in Great Britain 🇬🇧
Sweet now that is worth experimenting :)
Thank you Mike.
Good cheep free energy concentration! Brilliant!
Talk to me I'm confused about this
Denise thanks you for the comment too:-)
I would like to create a parabolic mirror based swimming pool heater to extend the swimming season.This is for a pool in US mid Atlantic region where sunlight is fairly abundant in the early summer and fall, but because the temp drops at night the water stays cold. I'm thinking of something that focuses the light on a set of black pipes. There would be no pump, I'm thinking the water could get very hot and cause flow thru the pipes.
Hello Dan,
I love your videos, they're very informative. Have you ever tried this using a round form for your vacuum frame? It may not be worth the effort, but it seems like you could get a very precise focus. Since you use coroplast material, you could build the whole thing out of it. Using a few thicknesses to beef up on the sidewall , would increase the thickness of the side wall, making it strong. Just a thought. Thanks for the great video.
Great video thank you so we're good till for squishing bottles and glass
Hi Dan, did you ever try to heat up the tip of a Magnetron with your lenses, to check if you can get any juice out of it?
Damn, check you out, with your fancy editing and high quality production :P
Fascinating video Dan.
Of course you already know this but you're on the new Doomsday Preppers right now. That's pretty cool; I've been watching your videos for years. Thanks for recording them.