FLASH COOKING FRESNEL LENS SOLAR POWER SUN SOLAR OVEN COOKING

[brodywx]

So after preheating the pan and oil for a 8 hours, you were then able to cook an egg in 10 seconds?

[GREENPOWERSCIENCE]

@brodywx No, after preheating for 30 seconds. That lens melts copper in under 1 minute.

This was shot at noon so 8 hours would have been 4am. Not sure where you live but most places do not have sun at 4am.

[brodywx]

@GREENPOWERSCIENCE

I know i exaggerated with my eight hour comment, this was just the first video of you guys I saw and was annoyed you said "real time" and never showed the pan heating up. Maybe I suffer from O.C.D

I have watched many of your other videos since and they are very good and interesting, so don't take my jabs to heart.

I would love to see it melting copper, that would be rad, buy if you ever did make a copper melting video you should show it starting from ambient temperature.

[fixinfotech]

That fresnel lens is like a death ray 

[ParapaDrifter]

this shit is so steampunk

[Lavenderrose73]

I think I'd be too scared to work with something like that. If the lens is so powerful, how do you carry it out to location without burning something (or yourself)?

[nesteaC]

can you ingest UV? just curious lmao

[yoshihawv]

1:08 cute

[DuckSackJones87]

Why not just use the lens to start a fire and cook with that?

[purity4all]

@DuckSackJones87 wood is considered a resource. These Fresnel lens cookers were intended to use no resources.

[purplemutantas]

@DuckSackJones87 A fire would require something to burn, like wood. Using just the sun you don't consume any natural resources.

[stiggyh]

denise youre just as hot as any fresnel lens ;)

[Thiemann79]

in all your videos there have been two things that only denise could do, it was sewing the bags for the "corn-hole-game" and cooking an egg? Your a funny couple!

[anuarag67]

both of you are very creative !!!!

[JhonCristophe]

Top gear dident make the egg so good

[narcovice]

does an 18 inch parabolic dish cook eggs the same i know flashlight reflectors does

[sixs247]

Your so beautiful, Would you like to go out for a real dinner??

[truthbomb1]

Great videos from great people. Thank you.

[PezunaProducciones]

I really would like to live like you both do, with my girlfriend next to me helping me making such great inventions!

[johan404]

Why not elevate the pan slightly, and put a mirror under it on the side, then reflect the light from the fresnel lens on the bottom of the pan. This way you don't need to use welding glasses everytime you cook, lol.

[GREENPOWERSCIENCE]

@johan404 watch?v=xDr7uX53Uy8

[lostsoul517]

I been watching your vids for a long time. Great stuff. Im just curious, how high your numbers are since your wife started. Keep up the good work.

[derman077]

Those goggles are SO Steam punk. Great vid. I will try this for breakfast in the morning. Thanks

[rodnjac1]

Ok dude! Could your wife be any sexier?! Kudos!!!

[PAYPALVICTIM1]

amazing ! well girl,it's time for you to come here in Europe and show your talents live in my restaurant ! when you come?

[asmetuyasiempre]

ok now u all call the light n the gas company n cancel the service., n have a barbecue every day,, that will save u at least $3000 a year, matter of fact call the fone co n cancell it, go buy walkie talkies u save another $1000, ok cancel u water service n buy a water receptor n save the rain water u save another $1500,now lets get to the bottom of this, go hunting n fishing or created u own farm u will save another$5000 a year on food., who said living is expensive?

[magicyte]

By that I mean...use the wonderful insulating/ambient temperaturee properties of the house...at the same time using solar heaters to maintain the temp...while heating water in the solar/uv room as well as do all the cooking in this glass room. Sounds pretty simple to me.

[magicyte]

You know...I'm baffled. We now can all live off the power of the sun...and what I'm bothered by is that no one ever does a video of these in the cold of winter. Not just -10C...but -30C. although from my understanding we could all build a sun/uv room with clear non-coated glass and just utilize all this solar power from indoors...am I wrong?

[glotoniok]

ms.denise rojas,mr.dan rojas,

i work in science,

i observe,both of you spend,time,effort,money doing that,then post it in youtube.

biology science,

i need the profile,mission and vision of your greenpowerscience.

im thinking if i will share some new discover in our lab..uncommon..

lets talk,we have something to do for better.

[qsk2pc602]

you fine

[lisag65256]

I would have to say that is thedefinition of "FAST FOOD"...Lol..love it...

[muddymuddymuddmann]

Thats fast,

MUDDy

[DriftDriver36]

You could have used fire! ,easier and cheaper.

[seuros2]

Look like if she is cooking magma :d

[systemaddictshock]

mag-mah

[social3ngin33rin]

Well something this bright would damage your eyes!!! so use proper protection and cautions. These lens have the capabilities to melt concrete!!!!

[REYCHARLIEII]

Excuseme,where you buy the glass lens,and how much is it cost?and how are his size?

[GREENPOWERSCIENCE]

@REYCHARLIEII check or website link under more info. They are all acrylic.

[nick14454]

@REYCHARLEII i think it is from kipkay.

[Christopher711]

I notice you had the goggles on. Could someone damage their eyes using that LENS like that or is it just for comfort bc it's so bright?

[GREENPOWERSCIENCE]

@Christopher711 Similar to welding. Light is only an issue on lighter objects. Dark pan okay, eggs too bright. So they are needed for safety.

Dan

[Christopher711]

Thank you.

[LiquidChem]

@GREENPOWERSCIENCE No thats not right. I just built a fresnel lens. Any time you use a lens like this, wear welding goggles or really dark sunglasses.

[LiquidChem]

@Christopher711 Absolutely, this is many times stronger than looking directly into the sun. Even with dark sunglasses, it hurts my eyes. You should always wear them when using a lens like this - you need to in order to focis it and see what youre doing. SERIOUS risk of EYE damage!!!

[MrEhtisham007]

Denise nice one gud job

[argon1966]

Yeah....nothing says breakfast like a fresnel lens and welding glasses

[aqtrubz]

Denise and Dan you remind me of george lopaz

show i like what you all are doing keep up i learned a lot from you two thank you

[carbednotch]

what device are you using?

[Jack9Riley]

My wife likes your shirt. Purple is her favorite color.

[etalfrance]

to kricotoy: dude, i came on here to watch a solar cooking vid, not to read bullying comments made to someone just because they called you out on making a sexist comment. us "gringos" can understand Spanish pretty well to know when someone's being a sexist pig.

let's focus on the fresnel lense stove, already!

[GREENPOWERSCIENCE]

Thank you for the information. Blocked user, YT aware of it.

Thank you again.

Denise

[blingdorkle]

it seems you need to focus. guess what, there are millions of people on here and a majority are jerks, just like in real life. you do have the option of not reading the comments, like you said, you came to watch the video. besides, she is a big girl, looking like that I'm positive she has had to deal with the sexist thing a long time. besides, she IS gorgeous. I would never put her in a video and expect zero comments.

[flordemagda]

Que, un hombre Latino no puede pedir el respeto para una mujer o escribir en ingles, sin que otro vaya a asumir que es un gringito?! no te respondi para peliarte aqui, pibe. Simplemente te comente que tu comentario le falto respeto a esta chica y su esposo. Ya demasiados gringos piensen que todos los Latinos somos unos machistas de mier*a. Yo no quiero contribuir a ese esteriotipo. Ni necesito darle bolas a ningun tipo que solo habla groserias. Ya esta.

[GREENPOWERSCIENCE]

Thank you for the information. Blocked user, YT aware of it.

Thank you again.

Denise

[flordemagda]

No need for you to be so nasty to me on here & btw, I'm not a woman. There are men out here who also don't accept someone like you saying, (translated from his 1st comment): "mami you are...how good, tasty in all senses i'll marry you & we'll make a lot of babies how hot you are!!!!!!! [signed] a very hot & bothered mexican man."

I hope the owner of this vid deletes your disrespectful comments. & as I 1st replied to u, have more respect for this woman & her husband.

[Watche777]

Good video. Why not use the convex side of a parabolic mirror to direct the heat from the lens. The lens focus can be lower to the ground, giving more room above it, and the heat would cover more of the pan. You can angle the heat so that the lens isn't crowding the pan.

I know it will diffuse the heat, but don't know by how much.

N.B. re: English/Irish eggs. Some producers put E102 (tartrazine) in chicken feed to colour the yolk. E102 is implicated in epilepsy and ADD.

[sapdeis]

Hi, I'll have my eggs over easy with two slices of bacon and some lightly buttered toast please.

[cadissimus]

denis is hot as sun

[HHOhybridBuilder]

Very educating.

[TimKGrimes]

You two are quite a pair. No pun intended. Hahaha.

[TimKGrimes]

Seriously, your videos are very informative. I can't currently envision using the Fresnel lenses but the solar panels seem very viable - even the Harbor Freight 45w versions. Keep up the good work notwithstanding the hecklers from the cheap seats! :-)

[DaxxFinsta]

Denise, I want to marry you. I'm kidding! Great video guys. Pls. keep it up.

[MattyH101]

american eggs are so weird.... there really white lol

[kryp10yt]

You're referring to the shell, correct?

[MattyH101]

yeh lol where im from (ireland) the shells are a light brown colour, and every other country I've visited the shells are light brown also lol

[kryp10yt]

Yeah, the farmer's markets here have the eggs like that with that light brown color and some even speckled. I think it's just they type of chicken that the commercial farmers use.

[RMCrowley]

I'm Blind!

[stephenawolfe]

Who needs an oven when you have the sun & a Fresnel lens? :)

[buckstarchaser]

People who like breakfast or dinner or like to eat when it's raining. :)

[arozdeleche]

does it really rain every single day where you are from? i doubt it.

[buckstarchaser]

No it doesn't... but I like to eat every single day.

[bluecollarboiler]

kewl!

[supressorgrid]

Gives "sunny side up" a new meaning.

[RupertsCrystals]

:-D

[dumb7890]

where could i get one of those

[RupertsCrystals]

From a hen.

[dumb7890]

the lens smarty pants

[RupertsCrystals]

;-)

Actually, he makes them himself, and sells them.

You can buy them from his website.

[MrShanester]

Cool cooking eggs in seconds!!! That's got to get really hot!!!

COME ON I've seen about 100 giant fresnel lens vids!!!

Does everyone have one???

[GTFORDMAN]

wow who would have thought that something with a surface temperature of 6,000 °C could cook eggs ;-)

[magua73]

Scramble eggs a la Rojas! Njammi, que rico!

[narcovice]

you can cook this inside the house with out pure sun outside also dont look at the center of the light look away from it but become aware of it

[ncbookz]

build a fresnel lense shaped according to the curvature the sun movement

and then you do not need to worry about moving the plat form electronically

[betomas]

Firme.

[Tigeraction08]

Great Vid as usual. I am wondering if you have tried any type of filter (input) to adjust the temp (output) from the lenses? I have seen you use water to change the focal point, but nothing other with adjust the output of the lenses. Its truly amazing to see concentrated light be used . Thank you and best wishes.

[kreech1]

i rated this one a 5 stars . awsome video what size lens are you using

[narcovice]

did you ever burn your hand while holding a bendibale fresnale lens and it burned up instead of what your cooking it happend to me today

[ChristianMarxist]

5 Stars Cool ,What kind of goggles r u wearing

[N2thedrink]

Denise? I'd like some bacon too.

Can i have breakfast in bed? Don't forget the oil.

Nice video, HOTT experiment, :)

[packagewarren]

not bad at all. very informative video. 4 stars.

[NITRO4KTHOMPSON]

I want to try that just so I can wear those awesome goggles. LOL

[RamoneTalarico]

I applaud you for what your doing! the methods are there, and the technology with it to live better and help keep our planet clean...

Any people bashing you for what your doing are simply ignorant, or maybe stupid....perhaps both...but keep on keepin on! i dig your vids!

[edstar83]

Farout there's alot of disrespectful people out there. this guy and his wife go out of their way to share there knowledge with us and you get idiots like sLim1of100 wrecking it for everyone else.

[GREENPOWERSCIENCE]

Took his comment down, thank you for the support. We get about 70 comments a day and the ups and downs thumb ratings help. I try to read them all but some slip through. Take care, and thanks again:-)

[wovvzer]

i'm so in love with this chick....

[kricotoy]

mami you are ....kbuenota rica en todos los sentidos me caso contigo y hacemos muchos hijos que buena estas!!!!!!!!

un mexicano bien caliente!!

[flordemagda]

basta de ser groseros aqui! ten mas respeto para esta mujuer y su ESPOSO.

[GREENPOWERSCIENCE]

Thank you for the information. Blocked user, YT aware of it.

Thank you again.

Denise

[kaduisaui]

That was lot of oil for my taste. Do it again and send me a sample to eat then I'll rate your video.

[narcovice]

does the lens nessasarily be that big what about a 12 x 14 inch on will that do

[Kenzofeis]

It's about concentrating a given Watt per square-something (ft/m) from the sun, so a bigger lens collects more. A lens 1/4 this size would use 40secs instead of 10 then ^^

Also, you don't need to use the focal point, even shouldn't, cause the energy concentration there is extreme.

1sq/m will receive several hundred watts, up to 1,5kW.

[leloodallasmultipass]

HOT STUFF.

[idahoviewer]

30 seconds to cook an egg for free, power wise. I like the idea of pre-heating and cooking without direct radiation (OH! There's that word!!!) hehe

[Minuvash]

Thank you

[nativesun]

Oh - and I liked how Denise cooked the eggs too. :)

[nativesun]

Lovely!

[cookdrewcook]

She blinded me with science!

[themaltesebippy]

"Green" power yet she bought eggs from a non biodegradable Styrofoam carton :/

[eddiequest2]

It is recyclable, however...

[stimulater7]

I THINK DENISE IS HOTTER THEN THE EGG

[mochaluvr]

nice!! that was pretty cool though :p

[slapspak]

well looks like they have solved the energy crisis, i can see us all cooking this way in the near future. now just got to wait 7 months till summer and i might be able to cook an egg so till then i will be eating raw badger.

[reginaldbowlsiii]

HAHAHAHA.. Badger is delicious raw..

[gofukckyrself]

with off the grid stoves like that we wont need no stinking electric company badgers-

[kreech1]

wow i'm inpresssed

[700eyesonly007]

That was excellent, how long did the pan have to heat under the lens before you could put the egg in?

[cookdrewcook]

From cooking experience, not very long I'd say- cooking an egg that fast, that pan will get hot pretty quick (it is BLACK) and the oil should start rippling, as in any cooking situation the actual time is less important than your preparedness...but I reckon, about as long as it took her to get the goggles on, pick up the bowl of eggs and the spatula and ready herself to cook 'em.

[700eyesonly007]

Thanks! :P

[cookdrewcook]

I didn't notice before, her glove when handling the skillet (HOT). she had preheated the iron skillet before putting the oil in...it'd reach temp quicker that way- consistently. From the looks- pretty high direct heat.

[greenmountainsolar]

she is very cute.

[Energi2DmaxX]

Are you gonna eat it? If not I will xxD

[malayrojak]

You are talking about the egg right? XD

[gilgamesh1962]

New meaning to the expression, "nuking" your food.

[Starfleet0]

hahahah good 1

[fmflores2000]

You are so sexy doing those eggs.

[XwhieX]

But it would be great if we could see some scientific proofs of your statement. Cause I'm not quite shure I understand how exactly the process goes, and why there is no solar radiation.

Solar radiation is radiant energy emitted by a sun as a result of its nuclear fusion reactions (wikipedia) and what you do is you concentrate it on your meal... thats a little bit scary for me... =)

[agungk]

UV radiation, X-Ray radiation, Gamma radiation might be dangerous for living organisms. But since you're cooking dead meat/veggie/whatever the danger should be inconsequential.

It's not like sun light is going to make your food radioactive. Probably you're thinking of solar cosmic rays, which are already filtered out by earth magnetic field. And cosmic rays are not electromagnetic waves, so your solar concentrator can't capture and intensify them.

[nathanxr]

If that lens scares you, I take it you don't use a microwave oven either...

I'm not scientifically minded, so I don't understand the difference between em waves being concentrated and cosmic rays not - aren't photons particles of some sort? How does a photon relate to the visible light spectrum of the em band?

[agungk]

doesn't scared at all. i was explaining to XwhieX why he/she shouldn't be concerned about concentrated solar radiation.

basically: dangerous solar radiation (i.e. solar cosmic rays -> high energy protons, electrons, neutrinos) has already being filtered by earth magnetosphere and atmosphere. only neutrinos were passed which doesn't mean anything since neutrinos will probably pass trough us without any effect.

[ineptgod]

electrons, especially those produced in beta radiation can knock out electrons from your body and interfere with dna

photons do not do this

cosmic rays are very strong, however they don't get here unless it's from a supernova or something like that

[MonoAoV]

Everything you eat grows in the sun... you NEED the sun. without it we wouldnt be doing much. Its true the sun is powerfully dangerous, which is why we never went to the moon, but its only part of the system. The other part is the earth. The earths EM field filters most of the suns energy and gives us what we can use. The system is balanced for life, not destruction (hence all the fuzzy animals). Cooking with pure light also tastes better than with gas or coal which gets in your food.

[ineptgod]

you're confusing different kinds of radiation

nuclear radiation includes particle radiation, specifically electrons

much of that gets sucked back into the sun by gravity

the rest is deflected by earth's magnetic field

the ozone layer filters out some UV although you do need some UV

so trust me you're not concentrating electrons on your meal

[XwhieX]

The big question for me is the radiation level of the food, that you cook in front of the sunlights... Isn't there a massive concentration? Because thats what happens if you stay to long in the sun, you get some radiation!

[GREENPOWERSCIENCE]

No, solar radiation is radiant heat and not like the radiation you are worried about. If that were the case, you would get lethal doses every time you got in a hot car or ate meat from cows who spend most of their time in the sun. Plants would also be deadly. Sun damage is cumulative or from one sever roasting from the UVA and UVB rays. These rays actually work to solar cooking's benefit as they can kill micro organisms.

[XwhieX]

Thanx =)

[KARStarla]

let me know when your smaller model is in i'd be interested in one too!

[ericm1016]

Way cool! Where can I buy one?

[GREENPOWERSCIENCE]

Go to my website, there are 2 links, 1 to a website and the other to Ebay. Thank You.

[Mapanatl]

Hey Denise

If you PreHeat the slab or stone first then heat up the Iron pan, (secondary move)

Just before you start cooking, you can remove the Fresnel lens (disable function)

you can go ahead and safely cook without the danger of hitting you hand with the beam and without injuring your eyes or wearing those silly brazing goggles.

Heck, you might have enough heat stored in the stone to make an Omelette! (don't forget the "serranos")

[GREENPOWERSCIENCE]

Thank you for the cooking tip. I will give it a try. I think we have a 10 pound stone that we can heat for a few. THANK YOU for watching my video. Denise:-)

[PukkPukk]

It seems that using the conversion from light to heat is easier and more efficient than light to heat to electricity. I have seen a project where a group in Utah is using essentialy the same Idea here toe boil water and then the preasurized steam is passed through turbines.

Where silicon waffers convert it straight to DC or AC.  It seems the out put of the heat far out weighs the output of the converted electrical currents. Please Reply

[GREENPOWERSCIENCE]

Steam is a great alternative and a throw back in time. Does the Utah group have a website, I would like to see what they are doing. THANK YOU for the comment:-) check out this video uJGpbvvJA2I

Turbines are more efficient than steam engines but steam engines work better off of lower pressure.

[june201955]

Wouldn't that make the eggs rubbery by cooking them too quickly?

[GREENPOWERSCIENCE]

Hi,

Eggs stay the same regardless of how fast. If you ever watch a restaurant make sunny side up, the white cooks instantly when dropped on the griddle. This is pretty much the same thing. This method of top cooking requires a bit of extra oil or they stick ASAP. Thank You for the comment. :-) GreenPowerScience

[mnbpaintball]

this is a great idea an all but really...why would you put so much goddam oil in the pan? those eggs probably tasted like shit, or actually oil lolzorz hahaha lollerskates roflcopterzzz hehehehehehehe

[fishsticksdelight]

lets see u do steak

[Hoopdewagon]

Very impressive !

[PukkPukk]

I think that the thing with Solar power is really, begining to live in the cycle of the sun. Therefore if we are staying up very late. We are using incredible amounts of energy that has to come from other sources. If we shower in the evening after the solar power has heated the water, and used mimimal lighting then solar power will take off. Though its great to see this.

[mhuttley]

the trick, is not to use only solar energy, like the video shows here, its much more efficient to do this then to use a stove. but to power cities and cars, no. so we could use solar energy for meneal tasks like cooking, but not powering cities and cars.

[carbons4]

Neat idea for camping trip. when you go to work its dark. no eggs for breakfast. usually dont cook at work. Like i said good for a camping trip but not so much everyday

[JULYINJULY]

I would love to buy a smaller cooker. Anything for the housewife. LOL

[GREENPOWERSCIENCE]

I have a smaller model that will be ready soon.

[PukkPukk]

You Tube "cheap - Solar power! technology" This is where I found out about the solar to steam.

[wilmadan]

its a shame ,,,poor people cannot afford to buy a giant fresnel lens. i'll stick to home made aluminum foil and cardboard solar cooker. PRACTICAL ISNT IT

[GREENPOWERSCIENCE]

Cardboard cookers work well but....

The Fresnel lenses are about 10 times as strong, and there are several other materials that are inexpensive like small mirrors. In most developing nations, they have tons of sun, so 1 lens could help many.

[roidroid]

after it's cooked i'd be all

"argh how do you turn it off?! there's no knobs"

[JavaLessons]

Fit the Fresnel with blinds that you close.

[roidroid]

good idea.

wouldn't it be funny to hear ppl say things like "oh no, i have to run home really fast coz i just realised i fergot to CLOSE THE BLINDS ON MY OVEN!"

haha, the future is weirdly cool.

[JavaLessons]

'Weirdly cool' indeed, LOL.

Some nanotechie will probably make a Fresnel that can turn opaque, but who will be able to afford that ? For most of us it will just mean : don't forget the blinds !

[UKBB]

"argh how do you turn it off?! there's no knobs"

Wait for the sun to go down?

[RevolutionaryJam]

lol, don't think the climate is quite right here in scotland unfortunatley :P

[JavaLessons]

Hehheh, speedcooking.

[snoopdog68]

Wow , that was fast.

I need to get me a big FRESNEL LENS.

[GREENPOWERSCIENCE]

My website has links.

[Iwanthax]

How did it taste?

[GREENPOWERSCIENCE]

Good, yesterdays eggs were better with cheese but this was so fast.