Actually the most exciting thing about color tuning is greenhouses that absorb IR,UV & Green to generate electricity while letting the Red/Blue for photosynthesis through. Ditto for windows in homes & cars. We can't see UV or IR, which means a 'transparent' window could be a solar panel while simultaneously being cooler & sunburn free.

@wino0000006

5 жыл бұрын

UV does not pass any ordinary glass - thus any glazed window protects from UV radiation.

@aini9528

5 жыл бұрын

This is not science but plants in the nature grow accustomed to UV light, it's properties (yes harmful, but in same analogy might make them stronger such as wind makes plant stems stronger allowing them to grow bigger fruit) should be studied. I'd be interested to hear if anyone has any input in this.

@duggydugg3937

5 жыл бұрын

tuning ? tinting ?

@DylanBegazo

4 жыл бұрын

Video starts at 7:48 Skip the BS TL:DR Tandem Solar cells with element wiggle room that can be sandwhiched ontop of each other in same solar cell unit area to double electricity generation AND can be made different colors or transparent to be used in windows too.

revolutionary idea... Very good presentation

This year I will take in one ted talk a day instead of all the bad news I took in every morning.

@stokey99

5 жыл бұрын

try not commenting your thoughts once a day too

Thank you Dr Conings. Maybe I missed it but I don't recall efficiencies being mentioned. The last record efficiency record I'm aware of was in 2016 of 22% with theoretical maximum efficiency of 30%, still a little behind silicon based cells where lab versions have gone as high as 40%. Perovskites cells are also prone to failure if moisture is present (much more so than silicon). I'm sure these cells will find their place where their unique properties will shine but silicon has a big head start that is likely to keep it in the lead for sometime.

Love the ability to print them at home, or maybe paint them onto the house..great for repairs, and keeping costs low.

I was expecting that he would also discuss one major disadvantage of perovskite. They dont last long compared to silicon cells. Perovskite breaks down fairly quick outdoors when exposed to heat, snow, moisture etc. Which is where most of the time we need them to be. I also heard concerns about Perovskites being a toxic material. I feel the talk was being biased vs silicon based solar cells.

@johnarena7819

5 жыл бұрын

Again solar is useless

@emlillthings7914

5 жыл бұрын

That's why they're coated in more resistant materials, like glass

@somoprovahalder1819

4 жыл бұрын

How about the idea if we coat the exterior surface of the perovskite window or surface with a layer of graphene? Its only one atom thick, transparent and an extremely good conductor of energy.

@chadurot1773

4 жыл бұрын

Instead of giving a negative comment or reaction why not think of other idea that could help harness the solar energy. We need some brilliant ideas out there that could be of much help than giving some criticisms. Now is the right time to make a move and use the available resources specifically the enewable sources such as solar energy.

@chadurot1773

4 жыл бұрын

Yeps that would be a disadvantage and maybe right now they are still trying to innovate it and making it more efficient for fit in commercial use. As what i have understand all they want is to help us more comfortable in our daily lives and most importantly environmental friendly.

One of the most important, and entertaining lectures I've seen in years. Great speaker.

An excellent idea posed... With a lot of research potential in the present and upcoming world

I so totally disagree with Luke -- this is in NO WAY boring! In fact it's one of the most exciting TEDs I've seen. I guess world-changing ideas just aren't enough for some people...

@billcichoke2534

6 жыл бұрын

World-changing, eh? Going from one of the most common, CHEAP materials (silicon) to possibly something LESS common or easy to deal with? Turning to a technology that would drop us from a high standard of living to turd-world levels? I guess we have a different idea as to what 'world-changing' should mean. I would rather we harness wave energy and nuclear, both of which are continuous and far cleaner overall, than something intermittent and unreliable and land intensive like wind or solar.

@court2379

5 жыл бұрын

Bill Cichoke Plus even if solar panels were 100% efficient and super cheap, it would not change the world much. The existing technology is already quite reasonable. You can buy panels for .25/Watt US. Now the issue is the cost of the inverters, and the bigger problem which he skips, energy storage. Solar is after all an intermittent power source. You want a world changing technology, invent a safe direct electric storage device with 10x the current energy density of batteries, capable of 1000s of cycles, that costs a bit less. Even if this theory pans out it will only be an incremental improvement, not world changing.

At the present time electric solar cells only work in one or two of the light spectrums and have efficiency ratings between 15 to 40% . The highest rates tend to be very expensive and lower efficiency rates tend to be more cost efficient provided there is the space for more panels. If Perovskite will work in all the light spectrums and is more cost effective in production of solar panels, this will be a VERY BIG improvement. Coupled with the new rechargeable batteries that are in development we are going to see a viable alternative to making and storing electric power which could make many homes independent from the National Grid.

Nice talk. I liked the understated humour. He did forget to mention the biggest problem: lifetime. Unlike silicon cells which seem to reliably last for at least 30 years, perovskites don't last very long at all. It would have been good to hear how research is doing with increasing the lifetime, possibly by encapsulation, or variants. It certainly does look like we could get some nice products that extend the solar possibilities though. Roll on.

@thettin684

6 жыл бұрын

Most of the research are now focusing on stability, with some compromise on efficiency. There are lots of progress, but in my opinion, would need another 3 to 5 years.

@onestagetospace4892

6 жыл бұрын

Any ideas on cost? Because if they are really cheap, lifetime becomes less of an issue

@burt591

6 жыл бұрын

.

@de0509

6 жыл бұрын

@ONESTAGETOSPACE Id like to not have to climb up the roof every year and haul stuff down and haul stuff up and potentially risk having no power while doing the replacement

@jessstuart7495

6 жыл бұрын

Shhhhhhhhh! The investors will hear you!

Wow that's amazing!

This was an amazing talk thank you very much. And thank you to the comments because it gave em a lot of questions I can potentially ask my professors about. I love how informative this was, again, thank you!

Some of us have been using solar since the. 60's. The new tech for lighting , batteries, and solar is dramatic. Perovskite is even better than silicon. Graphine is above amazing.

Silicon is the base of old solar panels and plastic is the element that converts light to electrons. The quality common to all halogenated vinyl molecules is also common to halogenated vinyl polymers. The silicon platinum or nickel steel base creates the cells and conductors of electricity formed by the plastic.

When I read the comments, there are two things that smack me. ONE : people worry about what to do when it's dark. TWO : Why didn't we hear nothing in two years time ? Number two is easy to answer. There will be a huge "throwback power" and that is called Oil. You cannot imagine what people who are selling oil will do (and capable of) to slow down or even stop this project,... money talk and,...well, you know. The oil kings are still ruling the world. Number one, that take a bit more time but,... : First I like to pint out that the sun NEVER goes down if you see it on world scale. Once there was a kingdom where the sun never goes down. Well, if we should be able (on technology scale) to join hands then It would be possible to build a chain of stations around the globe and connect them. IF we can build very long gas lines to deliver gas several hundreds of miles, then we should be able to deliver electrical power as well. See it like a network of cables which are used now to deliver your internet. Just a thought,....

@linmal2242

4 жыл бұрын

Not a chain of stations connected by wires. A chain of microwave towers, perhaps.

This video Is very interesting and have enough information to learn clears

like it or not, Solar is the future. in near future we will be out of fossil fuel and coal. we will have to improve this technology.

@linmal2242

4 жыл бұрын

We will never run out of fossil fuel/coal.

Sounds promising. Now, to get it out of the lab and into practical usage. That will be the real proving ground.

I know that there are claddings and curtain walls that have incorporated PV cells - however there are two major problems: it is not cost effective - you spend huge amount of extra money for PV facade and installation that will return in 30-40 yearst; the PV facade cannot be installed on the whole building - it purly depends on the direction of the Sun exposure; you can't do it in quite dense areas where you risk that within few years there would be constructed another building that would shade your building facade.

Watch at 1.5 speed. Much easier to watch actually.

Onwards!

I hope somebody in the world is using the same process Dr.Lee and Prof.Snaith used when finding a silicon substitute, for finding an even more efficient and environmentally friendly battery for the future. Excellent video Bert, thank you for sharing!

@johnarena7819

5 жыл бұрын

Keep dreaming

Has a form of perovskite been developed that is not subject to water and sunlight degradation? Isn't the problem with perovskite that it's highly unstable compared to silicon?

@marduchok

4 жыл бұрын

so far the longest lifetime of perovskite panels is 1 year. We need at least 20 years to start using them

Magnificent talk.

Great news but please have a glass of water man.

Where to buy...

I'm listening to this after a year and a half and wondering why we haven't seen more of this eureka scientific breakthrough yet. Then I read the comments and apparently it's not better than other solar panels because it has a short life. I guess that's why this hasn't taken off?

@sarmeetsingh4650

4 жыл бұрын

naa. its more to do with a Russian sounding name to be honest. if it was JFKsite, clintonsite or something, it would be on the moon by now.

I'm thinking layers of this for an electric car's exterior. Color tuned for a good looking finish, and power gathering efficiency.

30% of the time, it works all the time.

Whats the name of the material? and anyone know were can we buy it?

Saliva and breathing almost gave me a headache, but.. nice info, Im kinda worried because I had not heard about this and many years have passed since its applications were discovered... idk

Seems the best solar type for dome homes- since it BENDS ;)

omg! Snowden is into chemistry too?

Dark solar panels have the disadvantage of absorbing too much heat and warming the planet. But light or semi transparent solar cells won't have that problem. Something TED Talks has overlooked. I was always worried about solar cells being dark (for that reason) and I hope they do invent light colored ones. Also paint all roads and airports light, all parts of roofs etc. white and cover every roof as much as possible with the light colored olar cells.

Without proper energy storage then solar alone will never work.

@emersonharris142

6 жыл бұрын

Yes you are right, if you expend the definition of what I was saying about energy storage. So let me be more clear, unless we can storage enough energy in a quick release format (for example a chemical battery) so we can use that at night or when the wind is not blowing then the way of life as we know it will change. A change that a very large number of people on this planet will not accept by using fossil fuels in those times of need. There have been some advances in this by pumping water up mountains to store the potential energy to later be converted. Pressurized air is also a current option that is not chemical based. However, not every place has a large mountain or hill near by and the cost of making that many air pressure tanks is extreme, not to mention the hazards of keeping tanks like that in the first place. Costs that are far above the cost of using fossil fuels currently. Personally I would love it if we start looking at nuclear again. All the advances in computer technology and engineering we have is more than enough to make them "walk away safe" as it is called. Also what about next gen nuclear like breeder thorium reactors, the fuel we have for that alone in the earth's crust would last us 1000s of years alone or more. It also can work with our current power grid as it is today.

@richdobbs6595

6 жыл бұрын

If the cost of solar cells dropped sufficiently, I think that current electrolysis technology would be be sufficient, provided that you could get installed cost low enough.

@rediornot811

6 жыл бұрын

need to study up on battery storage for solar great advanced there too like the ones Tesla put in Austrailia and Porto Rico

@richdobbs6595

6 жыл бұрын

rediornot - South Australia, Puerto Rico, and Hawaii are all small enough that they might be loss leaders for Tesla, taking advantage of Panasonic selling batteries below cost with the hope and prayer that the "learning curve" model plays out long enough for profitability to be reached. My guess is that the lithium-ion technology gets cheap enough for subsidized use in vehicles (expecially if targeted towards dense population centers), but not enough for wide spread application to grid storage. I suspect that redox flow batteries is the technology that allows deep PV penetration, but that it will require a decade of learning in ion exchange membranes. Wish I was going to grad school now, rather than thirty years ago!

@richdobbs6595

6 жыл бұрын

rediornot - Looking at market capitalization, the entire inflated Tesla corporation is small enough that it could be a vanity project of a Panasonic executive. Until somebody starts manufacturing batteries open source without requiring a gigafactory, I don't believe the battery prices reflect actual costs, whether evidenced by occasional market purchases or analyst reports.

perovskite lattice disintegrate under UV and blue light and... so do perovskite solar cells!!! Not mention humidity and the cost to seal those cells in order to last more than 3 weeks. What about Lead in these cells? There are good ideas not meant to be in industrial production, nor on windows....

@HeyU308

4 жыл бұрын

Paul Malnol chromium and cadmium with lead and other elements

where are the links to this content?

Well it's always nice to get new horses in the race. I'm not sure they are quite there to compete with the current simplicity of silicone cells, but as long as they keep developing surely something usable will come out of it. Edit: I just checked overall progress and while they were the fastest developing tech they are slowing down to just slight improvements, and they apparently fade within months.

efficiency is not the problem. Its called night time. Storage is the real issue solve that.

@johnarena7819

5 жыл бұрын

And that's why solar is not the answer

@koerbagh

5 жыл бұрын

When we use only sunpower, one day without sunlight in the Netherlands needs storage of 300000000 KWh in Batteries, Is that possible? Wishfull thinking?

@macioluko9484

4 жыл бұрын

@@johnarena7819 Tesla has a battery product for the home, small and large business energy storage. They are working on the price of these items to decrease each year. In two months they will announce tremendous advances in battery technology. Solar + Battery storage is the answer.

@johnarena7819

4 жыл бұрын

@@macioluko9484 so how many years will it take of savings before the batteries and solar pay themselves off. The fact that scientists can't even agree on co2 being the cause of global warming is where the research should go...it is a waste on of time and money

@leonesperanza3672

3 жыл бұрын

@@macioluko9484 thorium can be a potential game changer too.

Water! Agua! Al Ma'a! Weha! Metsi! (These all mean water)

For the love of god. Get him something to drink.

@DylanBegazo

4 жыл бұрын

Video starts at 7:48 Skip the BS TL:DR Tandem Solar cells with element wiggle room that can be sandwhiched ontop of each other in same solar cell unit area to double electricity generation AND can be made different colors or transparent to be used in windows too.

@nealtauss1715

3 жыл бұрын

@@DylanBegazo ....Thrill Baby Thrill....

have the technology to generate electricity from waves, looking forward to cooperation and dual tracking solarfram

On the Avasva you can count on professional help with problems and technical support.

i wonder how many of these must we build in order to adsorb enough sun's energy tot lower global temperatures....

The trouble is that bird food - moths flies etc. are attracted to light and heat which then kills them. They are bird food and this will have a major impact on the world population of birds.

when you talk about wind energy, you sorta talking about sun energy as well. wind depends on sun

@nguyenvu8262

4 жыл бұрын

When you eat, the stuff that you eat eat stuff that grow by the sun. Yes, we are all powered by the sun.

Perovskite family of materials. Tunable for color. But why hasn’t there been anything about it, since this talk? Only hints have leaked out slightly.

Bert, are you wearing Google Glass, or something like it, or are those just wide frames?

I hope that the efficiency of Solar panels will achieve 40% or even more. But what is the highest possible efficiency of photovoltaic cells? But silicon and Carbon have similar properties in bindings and how carbon structures can change the solar power technology?

@CUBETechie

4 жыл бұрын

What is the wavelength which are harvest in regular cells and which in pervoskite?

thorium!

Hello Sir II would like to be a Marketing Sales on this, At this moment I am Studying in Law

WHAT IS THE POWER OUTPUT PER SQUARE METER?

AWESOME stuff! 1 moment of humor When he mentions color, I look up, and see his shoulders are red and so is the top of his hair. Seriously This makes great sense. As a start, solar charges usb stuff , via a car battery. Good to have in practice! good to go, no trying to buy stuff during blackouts! Just keep ROLLING, with the SUN 🌞 Harbor Freight tools excellent DIY SOLAR about $200 multiple DC voltages for all flashlight battery using type of STUFF. be comfy.

Research & Development better known as Trial and error! Fix one thing and cause two more problems. But eventually everything gets worked out!

Perovskite has lead, that could be a show stopper...

I think we shood make 100 amp power kit cheap 2 solar one charger and battery for cheap with a dolly to make it portable and then make a small one that you can carry on a backpack

So if I understand your initial analogy correctly Bert.. are you saying that if Spain were to allow everyone to have solar panels on every property.. SPAIN could potentially POWER THE WORLD! And become a RICH country! With no more DEBT, POVERTY, UNEMPLOYMENT, plenty of CAKE etc.. Only thing is.. Spain had a "SUN TAX" in place so no one has been able to have solar for many years! They made it unviable for their people.. how's that for insanity, greed and corruption! The EU stops at the Pyraneese!

Completely ignores the elephant in the room: longevity. Solving longevity might occur quickly, or might take eons. Solving longevity might require compromises that wipe out all of the advantages. Great to explore another potential technology, but this might be another dead end. Don't start planning your new solar roof quite yet.

@hitreset0291

5 жыл бұрын

Wtf? Were you on about with longevity??? Only took 5 years for my old solar system (incl govt incentives) to achieve break even. My new upgraded system in 2018 (8× in size) will have a similar time (5.5 yrs) to achieve breakeven at 1/6 the govt incentives to original install. Solar is a big winner now!

@ThiagoOliveira-ex3vw

4 жыл бұрын

Yet, it is a great topic to add to the discussion about the future power plants and a way out of nuclear. Nuclear has its advantages, but if we find something with no potential to cause a big disaster, we should go for it.

Is this the same as Thin Film Solar?

this guy needs to talk to Jimmy Carter.

This pretty rudimentary explanation. New Material unit cell structures and properties are being discovered everyday to increase efficiency and replace compounds. Perovskites ferroelectric properties are determined by the A and B site bond lengths. It is interesting that the meta stable compounds of ordinarily unstable and non ferroelectric compounds when in octahedral orientation show the most promising electric properties.

Someone asked, "the sun is nuclear, why don't we just use nuclear?" BEST REASON is philosophic, based on first principles: Nuclear Energy is Anti-Small. We need distributed / democratic means of production -- just like information. And that's not even Marxist -- it's just humane. So this is great news about the 'maker' trend line - you think?

Solar cells could be free and they still wouldn't be cheap enough because of the intermittency, lack of grid inertia and frequency control services, and lack of blackstart capability, and the associated huge costs for the extra transmission lines compared to traditional power plants.

Nearly 2 years since this talk, still have not heard about any products from this stuff. Must be a hoax.

LFTR, is renewable if geothermal is renewable.

a gravity harness (underwater wheel) uses no fuel and makes all the electricity you could ever use on demand and totally free

Exciting technology but this presenter is just so happy with himself that he really detracts from the message.

@DylanBegazo

4 жыл бұрын

Video starts at 7:48 Skip the BS TL:DR Tandem Solar cells with element wiggle room that can be sandwhiched ontop of each other in same solar cell unit area to double electricity generation AND can be made different colors or transparent to be used in windows too.

Why do you think they built Pyramids >? QC

What a sound? Do you have candy in your mouth?

@claudeusgothicus6453

4 жыл бұрын

@@JS-mh7sf - that may be true, but I don't care to find out.. not only this speaker's delivery, but the entire sales pitch is absolutely one of the worst I've ever been subjected to..

Generating the power from solar cells is not the engineering problem: The problems that are hard to solve are (1) Intermittency (2) Storage You are generating power only when the sun is shining and hitting your solar cells. Unless you can store the power you will only have power when the sun is hitting your solar cells. Battery storage completely negates the savings you get from solar energy

@46ace

6 жыл бұрын

"Completely negates" is too strong a term here. "Storage" IS an issue but not an insurmountable one: Battery technology is also advancing daily.

@alexandren.9346

6 жыл бұрын

Chris Schene I have to agree with Magnus. There ARE some ways to save solar energy for a shorter term. For example by powering chemical reactions and later reversing them to get your energy back. And as the technology advances, we can be optimistic that we'll also find ways for long term saving the energy, too.

@chrisschene8301

6 жыл бұрын

In the US we have about 6 to 8 times wind power production, in terms of KWH, than we do solar power production between My understanding is that the current lithium storage battery cost is $200-$350 US per KW . At that cost level, an 85 KW car battery will cost between US 22,000-29,000 just to manufacture. This information is a little old so there may be newer figures. I have also done some research on the Tesla car batteries and they are looking a max charge-recharge cycles of 1000-3000, very dependent on how badly the batter is worked. I like wind power because most of the time there is wind someplace 24 hours a day. The US has 45,000 MW of wind electricity generation. What about balancing this out with some tidal and ocean temperature differential power generation AND solar. I do like the idea of the electric cars balancing the grid but keep in mind you are adding more battery cycles.

@dlwatib

6 жыл бұрын

Check your facts and figures, Chris, they are inaccurate, especially for the low-cost leader, Tesla. In light of the pricing that was just announced for the Semi trucks, it's obvious that by 2019 when the Semi is scheduled to go into production, Tesla will be able to manufacture cells for significantly less than $100/kWh, say $85/kWh. Add in some costs for packaging into battery packs and they are probably looking at a cost of $125-$150/kWh, or about half of your estimate.

@chrisschene8301

6 жыл бұрын

This sounds like an advertisement for Tesla. Those figures are Tesla comments that I have also seen in the media: Tesla marketing statements and projections do not qualify as "proof" of anything. This is Tesla marketing speaking "Check your facts and figures, Chris, they are inaccurate, especially for the low-cost leader, Tesla"

I read that perovskite doesn't last long and is weak. Just repeating here what I heard. I hope not- sounds good.

Two problems: The planet isn't transparent, and the sky has clouds. Clouds are actually the more serious problem, because they can persist for much longer than night time.

The Sun...try to live without it.

With China committed to economies of scale commercialization is not going to look like that graph. Science versus technopolscopics and SMSA distribution matter more than efficiency of surface area.

Actually the talk about the advantages of 'decentralization' of solar is completely backwards. By being "decentralized", solar energy contravenes the most basic law called Economies of Scale. It means that big things are efficient and little things are inefficient. So a nuclear reactor is vastly more efficient than the same amount of energy generated in millions of solar panels. That is why we shop at supermarkets and not at corner conveniences stores.

This was a sales pitch.

did you know that nuclear energy is most dense and cost effective industry ??? and did you know that recycling photovoltaic will be a great problem for the future ???

Perovskites solar cells??... aren't they way more affordable...??... by the way, how is selling Perovskite solar cells??

@nmarbletoe8210

6 жыл бұрын

i think they only last a couple months at this point. they used to last a few minutes so maybe they'll get it working someday for mass use

@nolan4339

6 жыл бұрын

Yes, there is suppose to be degradation issues with them when they are exposed to air, which means they need a sealant layer, and even then it might still be an issue, but with a large variety of compositions available, there are likely some combinations that work better. And like all things - More research is required.

what about battery improvements ? what about carbon foam battery tech ?

If it sounds too good to be true it probably is...

@richdobbs6595

6 жыл бұрын

Apparently the problem is longevity. You can make these things easily, but they only last for less than a month. The efforts to increase the lifetime make them increasingly hard to make. It's not clear if they will ever have the lifetime of silicon based cells, or if there an intermediate lifetime that would be economically viable. Time will tell.

and are you aware that Halide Perovskites are based on heavy metals, I mean, SILICON is everywhere and not toxic, you think someone will risk his life wearing something that has only 20% of efficiency. When you achieve 40, let me think about perovskite.

@seveNGus

6 жыл бұрын

From what he said one can use a vast variety of materials for perovskite. The efficiency is ramping up and is already comparable to many silicon cells. AFAIK the main problem is that they still can't make it last as long (30 years for silicon cells). Also, even though silicon cells are non-toxic, the way they are manufactured does release some toxic materials.

@projectfortatjana

6 жыл бұрын

@seveNGus are you aware that perovskite contains toxic in them?

@seveNGus

6 жыл бұрын

I thought that was clear from the beginning, which is why I mentioned that you may use different materials. Also, toxicity is something related to concentration. Pretty much anything can be toxic if the concentration is above a given threshold. It could be that this technology proves to be a bad choice, but we should still investigate anyways.

We have right at our fingertips the answer to the problem that makes all these renewable gyrations pale in comparison. Hydro generation plants operate at a very low efficiency. Less then 16%. Redesign your bad machines and your hydro power will jump by 5 times.

@jamesaritchie1

5 жыл бұрын

Wow, you should become a scientist and take over the energy department. They all say this can't happen for at least a hundred years, and possibly never. The future of energy will involve just about every type of energy we can think of, but it will eventually be nuclear. We are already starting to build reactors that use no dangerous element, that can't melt down, that generate no dangerous waste, and that can generate power forever.

@dragmit

5 жыл бұрын

@@jamesaritchie1 You are a great salesman but I have no interest in your commission status. And exactly how much do you know about my research? Nothing I expect.

@claudeusgothicus6453

4 жыл бұрын

@@jamesaritchie1 - really none at all huh? really? specifically what are you referring to? if you're alluding to thorium over uranium or even molten salt reactors I can't agree.. although each one has been an improvement upon the other, none of them fit my definition of clean energy.. especially when you consider protactinium separations provide a pathway for obtaining highly attractive weapons-grade uranium 233 from thorium fuel cycles.. oh wait.. my bad.. you did say does not use a dangerous element.. why didn't you simply say nuclear fusion considering there are not multiple forms to pick from? how hard would that have been? haven't you figured out yet that when you simply say nuclear energy without specifically defining the one type of nuclear energy that stands alone from all the others - people automatically think of the only examples in the production capacity that they've known.. and absolutely detest the use of?

Well, here we are 3 years later and solar is failing miserably, not to mention, solar still doesn’t work at night.

Hi Bert . Thanks for sharing a great talk .This is a game changer it's a shame Luke is so dippy .He should go a way and watch Daffy Duck what a fool. Your post Luke was sad to see .This is so important and exciting for every person on the planet .Come on say sorry.

Saying that the amount of incoming solar radiation is 3000x higher than what we use is not an impressive number. If you do the math, we would need to cover something around 2% of all useful land on the Earth. And consider that energy requirements are going to go up drastically with rising population and with increasing industrialization among the poor parts of the world. 2% is ludicrously large. Imagine paving over 2% of all useful land on Earth. And then remember that you have to replace it every 20 or 30 years. How do I arrive at that number? Consider, about 108000 TW of solar radiation hits the Earth's surface. To be serious about climate change, we'll need to convert basically all of our energy use to clean energy, and total primary energy use will be about 30 TW by 2030. (Ignoring difference between heat energy and electrical energy for now.) I don't believe that multi-layer solar cells are going to be remotely cheap - conversion efficiency is likely going to be be about 20% at best. Only 29% of the Earth's surface is land. We're not going to build solar cells at very high and very low lattitudes - so let's add another factor of 50%. Finally, In any real plan, we'll need to overbuild the capacity to handle a few days of clouds and to handle seasonal variation - say only a factor of 2x. So, what fraction of the Earth's useful land do we need to cover? Roughly, it is: 1 / (108000 TW / 30 TW * 20% * 29% * 50% / 2) = 2%

He didn't address the attribute of this material to degrade in a matter of days, if not hours. To my knowledge, this remains a problem.

nice but how much is it, is china making it? :)

Solar and wind is a nice feel good story but if we were really smart we would accept Nuclear energy as the best option....for now.

@richhenry8004

5 жыл бұрын

Absolutely, solar takes orders of magnitude more space to produce the same energy, and it's highly variable, requiring the use of nat gas to fill the gaps --- solar is not a great answer.

College professors with american ascents were pedaling similar energy technologies 49 years ago when I was studying about the makeup of the Soviet Union government at UNM in 1969. Like anything, nothing is new under the sun, not even from the mouth of a Russian sounding physicist. Will it ever become a practical technology? I'd sooner expect a simultaneous cataclysm of war, famine, drought, nuclear fallout, epidemics, economic collapse and natural disaster than the rosy picture of a future full of clean, sufficient energy that conceited university faculties paint. Even if the technology does work, forget other environmental issues compounding because the moral disposition of the western peoples has become so polluted since Victorian times that it is past the tipping point.

Edison generators and dynamos are unlimited electric power. Solar power uses plastic manufacture pollution to produce the photo electric element of the solar panel. We can use less to toxic material as the the photo electric element of the panel. Erythrosorbate can more be used as the photo electric element. A less toxic battery can be used for storage. Contrary to what is believed the metal acid battery is environmentally safe and reliable battery. The lithium and charcoal batteries are unnecessarily toxic and sensitive to microwaves. The nickel copper stainless steel battery with sulphuric acid battery is infinitely rechargeable and does not need a recharge schedule. A survivable industry for solar industry would eliminate plastic charcoal and lithium to become a survivable industry.

Wow androids DO exist. I just watched one talk about solar for 16 minutes.

Thorium reactors beats any of this for the environment.

....at the Same time we started hyper-injecting fossilized carbon into our atmosphere.... we began PROLIFERATING Iron Plow Tillage.... agriculturally DISRUPTING optimal PHOTO-SYNTHETIC carbon SEQUESTRATION and Doubling the Damage....at LEAST. We MIGHT be able to turn THAT around faster than anything else we CAN do.... EXPONENTIALLY increasing Soil Carbon Retention by adopting all-around no-till organic agricultural methods.... MANY beneficial Societal 'side-effects' here... MO' Food & MO' Bettah Food&Health & Mo' Bettah Money (at GROUND-level.... where LongGreen Money makes Mo' Bettah Benefits in trickle-UP ECO-nomic Bops) and LESS/LESS money to the Manufacturers of Agri-Toxin.... where Mo' Money makes Mo' PROFIT$fo'POI$ON$ and NOTHING else.... and THERE's your trouble.... NOW we know why it's so hard to even TALK about making beneficial changes much less understand root Need for So doing AND....Root Cause for NOT.... Go ahead.... Wave your magic Wand.... even WITHOUT climate crisis.... these agri-poisons cause Air/Water/Food AND Health Pollution.... so IF you should find yourselves mentally incapable of grasping Wider Scoping for this Impending Horror... understand clearly NOW.... that carcinogenic agri-chem residues are CURRENTLY doing to your being'n'body what the manufacturers of those chemicals are doing to all Life IN AND ON Earth. It is Time to Change.... not just HOW we generate and use our energy...(..Roof-top Solar w/BatteryBack-up NOnukes AND electro-motivation..)... but HOW we grow the very food we eat....and in So doing we can.... in MOST likelihoods.... RESOLVE our Climate AND Pollution PROBLEMS.... in REAL Time....BEFORE we run out of 'UNPOLLUTED' Air.... Water.... Soil.... and us.

Solar powered duct tape that has a LED ever few inches. Free lighting.

@weeral1

5 жыл бұрын

without a battery you would only have light while in the sun... just sayin

@musikSkool

5 жыл бұрын

I thought that was implied. I guess I have to explain how everything works, there are a lot of very young people here on KZread.

TEDx Talks are no assurance of value for time spend watching. Like this one. You get a one sided sales talk. If the "Perovskite" are toxic or do not last it should be mentioned with the same volume as promoting it. Just IMHO. See the recent TEDx Talk of solar panel waste in Australia.

@joecornelius4334

4 жыл бұрын

Grind your axe somewhere else. There are technical hurdles to bringing perovskite solar panels to market, to be sure, but your disingenuous comment about waste --ignoring the waste generated by other energy sources and the decades the industry spent not addressing them-- is just patently dishonest. Carbon Monoxide, Carbon Dioxide, Sulfur, VOCs, Nitrogen Oxides, acid rain, coal ash, radioactive waste, are just a few of the byproducts of current energy sources --WHEN THEY'RE USED. Silicon- based solar panels use many of the same processes used to make chips for PCs, like the one you used to type your comment, the difference being that they aren't releasing mounds of toxins into the environment as they generate energy.

What ya gunna do in the dark?

Where’s my flying car

@Justwantahover

4 жыл бұрын

You can't even buy a flying car for several mill, but they sell cars that don't leave the ground for that. Flying cars will work with jet engines but small jet engines are around and only cost like 100 grand each (for the hobby ones). Even if you need ten jet engines it's still only a mill for them. It would be enough to lift 2 up (easily) with a lightweight car specially made. There are cars for sale for over 3 mill some "worth" nealy 10 mill (inflated "value") and people actually buy them. It doesn't make any sense that they don't even sell one single flying car for several mill. The only thing I can think of is development costs against sales. And another factor why they aren't around, we have yet to find someone with the access to the money, combined with the passion! We need just one rich fellow with the passion. We need someone with both these characteristics. We find lots of (one or the other) but none with both, yet. That is the problem. Elon Musk with his rockets is a prime example of what I'm talking about (but with rockets instead of flying cars).

What, Edward Snowden is into solar Research? WTF!

NEVER fasten both buttons on your jacket! Top button only. Geeks! - brains but no style.