Posted on 07/05/2024 4:40:18 PM PDT by Jonty30
Scientists have been striving to tackle the accelerating climate crisis by developing novel ways to develop sustainable cooling materials.
Recently, a team of researchers from Sichuan University in China has devised an aerogel composed of gelatin and DNA that surpassed 100 percent solar reflectance.
Additionally, an official statement by the American Association for the Advancement of Science (AAAS) noted that the aerogel is biodegradable and provides exceptional radiative cooling.
Aerogel crossed over 100% solar reflectivity Jian-Wen Ma, the first author of the study researching and developing the aerogel material told Interesting Engineering that the material has a reflectivity of 104 percent in the visible region which is brought by the photoluminescence effect.
“The reflectivity is obtained by testing with a post-spectroscopic UV/VIS/NIR device,” he told IE.
“The luminescence of the aerogel originates from the tightly cross-linked network formed by gelatin and DNA, which allows the chromophores to come together and inhibit the non-radiative leaps of the system.”
In simple terms, the cooling material possesses the ability to reflect a lot of sunlight due to its special layered design and its unique way of glowing when exposed to light.
Not only is the material biodegradable but is also reparable, and recyclable, presenting an environmentally friendly alternative to traditional cooling materials.
(Excerpt) Read more at interestingengineering.com ...
> Did you ever play with a “Super Ball”? They seemed to do that. <
I’ve seen that. They are always faked. The person either consciously or subconsciously adds a little push to the ball. And so the ball bounces higher than where it is released.
The First Law of Thermodynamics is clear on this. Energy cannot be created or destroyed. If the ball really did go higher than its original position on its own, it would be creating energy.
By the way, over the centuries many people have tried to disprove the First Law. Nothing wrong with that! But none have succeeded.
Vax part 2?
Lol.
Thank you.
Your post is 106% better than the other posts.
It’s just math.
For it to be greater than 100%, the shingles would have to be cooler than the ambient temperature. I think that is what is meant. If it’s 23C and the shingles are measured at 21%, they’ve passively cooled whatever it is that they are covering.
It’s possible that it is doing that. It’s just a question as to whether it is worth the cost and the negative. It’s going to cool in winter temperatures as well, so are you going to lose during winter when you may have to run your furnace longer to make up for the additional heat lost by these shingles?
“Maybe it’s engineered to reflect nearly 100% of direct light, but absorbs the cool to combine to 104%?”
Don’t quit your day job.
Reflects on visible light wave lengths, not IR. Biodegradable means shorts life span with costs of removable and replacement.
The chinks think they want to use it for refrigeration somehow, but do not know how.
The chinks are looking for applications for their product, but have yet to find such.
Reading the description of “aerogel” product sounds like a evaporative panel (swamp cooler) that has water flowing over it.
> Quantum mechanics or something. <
I actually taught a freshman-level college course on Quantum Mechanics for a few years. And from what I gather from the article, perhaps the key is that the paint is biodegradable.
So maybe when the sunlight hits the paint, it breaks a few chemical bonds. And those bonds release energy. But such an arrangement must eventually come to an end - when all of the paint bonds have been broken.
Bottom line: I don’t think it’s a Quantum Mechanics thing. Instead, I think the ChiCom scientists are funnin’ with us again.
many people have tried to disprove the First Law.
= = =
And they are just not trying hard enough to prove it the right way, like Socialism.
I mean that. Obvious, it cannot reflect more than 100%, so it must be doing more than just reflecting.
There definitely is a propaganda aspect to this article.
The Chinese showing another world achievement that nobody else has done. The reason why nobody else has done it is because nobody is allowed to do it because China is paying our politicians to make our countries ineffective.
Whose DNA is used?
I’m guessing DNA from lightning bugs...
That is a relevant question when it comes to China.
“Reflects on visible light wave lengths, not IR.”
These aerogels also reflect IR.
A coating loaded with aerogel will not form a strong film. It will not take any abuse.
Oh, great—more good news!
Reflectavility is not the same as Reflects.
Visible region and not Visible spectrum?
Shame on anyone foolish enough to take China’s word that they developed something new, as opposed to stealing an idea from abroad or just making it up altogether.
AIRPLANE PILOTS SHOULD BE CONCERNED
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