Why Silicon Valley needs a new name
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- čas přidán 13. 05. 2024
- We can thank silicon for everything from computers to solar panels, but it's reaching its limits. Here’s why and what’s next.
#planeta #elemental #silicon
We're destroying our environment at an alarming rate. But it doesn't need to be this way. Our new channel Planet A explores the shift towards an eco-friendly world - and challenges our ideas about what dealing with climate change means. We look at the big and the small: What we can do and how the system needs to change. Every Friday we'll take a truly global look at how to get us out of this mess.
Follow Planet A on TikTok: www.tiktok.com/@dw_planeta?la...
Credits:
Author: Amanda Coulson-Drasner
Camera: Neven Hillebrands
Video Editor: Amanda Coulson-Drasner
Graphics: Adam Baheej Adada
Supervising Editor: Kiyo Dörrer, Michael Trobridge
Thumbnail: Em Chabridon
Thanks to:
Circular Silicon (www.circularsilicon.com/)
Ravinder Dahiya (coe.northeastern.edu/people/d...)
John Perlin (john-perlin.com/)
Gonçalo Marcelino
Read More:
Let It Shine: The 6,000-Year Story of Solar Energy, John Perlin / let-it-shine
What is Moore’s Law? ourworldindata.org/moores-law
Wide Bandgap Semiconductors www.energy.gov/eere/amo/artic...
Perovskite www.nature.com/articles/s4158...
Silicon pubchem.ncbi.nlm.nih.gov/elem...
Chapters:
00:00 Introduction
01:12 Background
02:11 Silicon in solar panels
02:53 Silicon in electronics
04:04 What’s wrong with silicon?
04:45 Understanding the bandgap
06:23 Wide bandgap materials
07:58 Sustainability concerns
09:19 Silicon recycling
09:56 Conclusion
So, what's the new 'Silicon' for our revamped Silicon Valley, any quirky ideas?
Graphene
Woke Wasteland
Physicist nitpick: one should never use the term "double the temperature" unless the unit is Kelvin. 300°C is not double of 150°C. 300°C is 573 K, so double of 276.5K or approx. 3°C..
thank you for being picky. This is comment is interesting!
Thanks for that! 🤓
celsius doesnt refer to temperature?
@@fetB There are multiple units to refer to temperature with varying precision such as degree Celsius, degree Fahrenheit and Kelvin, with Kelvin being the most suitable and commonly used in physics related calculations. This is due to different units having been made with different rules.
Kelvin is an absolute unit resulting from thermodynamics laws, with 0 Kelvin being the absolute Zero, the lowest temperature physically theoretically possible (but not actually feasible in practice).
Meanwhile degree Celsius is a relative unit that bases itself on water’s fusion and ebullition temperatures at normal pressure, with 0°C being the fusion temperature and 100°C being the ebullition temperature which makes it pretty convenient for everyday life use but also means it’s quite arbitrary.
Since the fusion temperature of water at normal pressure also happens to be 273.15K and adding or subtracting 1°C is the same as adding or subtracting 1K, this means that {temperature In Kelvin} is exactly {temperature in degree Celsius} + 273.15. So when you have 300°C this means you have 300+273.15=573.15K.
That might get you thinking the two are pretty similar and interchangeable but it becomes tricky when dividing or multiplying: if you divide 300°C by two you get 150°C which is 423.15K, but if you divide 573K by two you get 286.575K, that’s around 13.5°C. It’s a very big difference, which is due to scale and their starting points being different, one being absolute and the other relative.
Strictly speaking, “half the temperature” would be way better suited as the Kelvin temperature divided by two since 0 Kelvin is actually the minimum temperature considered possible, which means “half the temperature” of 300°C would technically be 13.5°C. More generally, in physics when you speak of “half of something” it’s in absolute terms because it needs to be applicable in any case, so its about consistency.
This is why we typically use Kelvin for scientific calculations, and Degree Celsius for convenience in everyday use.
Edit: fact checked and reworded for clarity
@@hLux101 its not arbitrary when it is grounded and neither is celcius imprecise by any means, just because it is a relative unit that doesn't reflect "temperature" on a molecular or atomic level. So when you try to nitpick, do it right. Of course the difference can be significant when you use different units. 5km is a lot different than 5 inches, yet they both refer to a distance or length. It would also not be better suited to use kelvin since most anyone can relate to celsius. "strictly speaking" it would be the worst choice since the target audience is humans, which grind to a halt when exposed to below 0°C without protection and receive brain damage past like 50°C, so 150°C is a very significant showcase of difference however small expressed in kelvin.
You could argue they could have displayed kelvin in parenthesis, but it wouldn't have made a difference. pun
A computer scientist's nitpick: Moore's law measures the number of transistors within a microchip and NOT the processing power. While increase in transistor amount does often translate in increased processing power, this is not universally true...
Would love to see a video explaining the different types of heat pumps, ad most people are unaware that vertical ground source heat pumps are by far the most efficient, requiring only a tiny amount of land and deep drilling equipment that's only a few inches wide, and accessing constantly stable temperatures all year round. When you say heat pumps, most people only know of air source heat pumps, which are the least efficient (requiring more energy when the air gets cold, with most ceasing to be efficient at -15 C) and can be a little noisy.
here in Canada, geothermal heat pumps are known to be most efficient, the barrier is cost. natural gas is very cheap here, so people just heat with gas.
@@gabrieldsouza6541"natural gas" is methane, not only does burning it produce climate change emissions, but methane itself, when it escapes, is more than 28 times as damaging as carbon dioxide! And heat pumps, after the initial investment to install, are much cheaper to run - after all, you cant get cheaper to run than FREE if you have solar panels and a house battery.
@@TimLongsoni agree with you on the harms of gas heating, but the fact is that most people just don’t have the money to get solar panels (Canada has low solar irradiation due to to our high latitude) plus a home battery system. further, a significant portion (15-20%) of our population lives on the Prairies, where winter temperatures can reach up to -35C for days at a time. I understand cold-climate heat pumps have come a long way, but honestly I would want a backup heating system for those extra cold days. and also the point about running a heat pump is generally true, unless electricity costs more than gas, which actually is the case in some Canadian provinces. i believe in heat pumps as the solution, but insulation needs to improve first.
We will have a video on heat pumps coming in the beginning of next month so stay tuned! ✨
@@DWPlanetA great! Please go into detail about the different types (vertical ground source vs horizontal ground source vs air source.) I believe vertical ground source heat pumps are the most efficient and reliable, with the only barrier being finding an installer that has the vertical drilling equipment. But I am excited to see your video. :)
6:37 Graphene is not a wide bandgap semiconductor. In fact, it is not a semiconductor at all. It has no bandgap. It's more like a metal.
zero-gap semimetal semiconductor. It can be metallic or semimetallic and semiconducting depending on the orientation
Perovskite City would sound too Russian for a western City :D
This is for real the best video presenter DW has to offer !!!
She cool.
Such a cool video!! Thank you!
Thank you for watching! By subscribing to our channel you will get new videos on environment on Fridays! 🌈🌈🌸🌸
Great explainer.❤
Glad it was helpful. 🌈 If you want more videos like this every week 👉 make sure to subscribe to our channel! ✨
How much perovskite is available compared to silicon in the Earth's crust to make solar cells with?
Silicon is more abundant in nature but also the elements needed to form perovskite crystal structures are abundant enough - so there should not be any problem with these in terms of production. Stay tuned for our video on perovskite and solar technology coming up really soon! 🌞 You can subscribe to our channel to make sure to be notified on new videos.
Wow I had no idea solar panels have been around since 1884!
That's not true.
Great video, really informative.
Great to hear, thanks.✨Make sure to subscribe to our channel for new videos on environment on Fridays! 🌞
good video with key informations
Hey there! Glad to hear that you liked the video. We post videos like this one every Friday. Subscribe to our channel so you do not miss any ✨
It is nonetheless a semiconductor with latter uses and purposes. Thanks for the presentation.
the first graph made me nausea, representing exponsential growth using a linear section but the Y scale changes while a pretty straigth arrow appears is there any worst way to show exponential?
Actually, a logarithmic scale on the y axis is quite common for visualizing exponential functions - specifically because the graph then looks linear, thereby proving the function is really exponential.
"Solar panels only converts one quarter of ... " yeah that's one perspective ... another way is they now magically turn a full fourth of all the photons into useful angry pixies. lol
Can someone explain why a wider bandgap allows for better energy efficiency? Wouldn't you need more energy in the first place to cross the gap? Why, in processors, can't you just put the right amount of energy into the system imstead of overshooting?
From 4:45 we start to explain the bandgap. The smaller it is - the more energy is lost as heat. Wider bangap allows for better control, reducing the likelihood of electrons leaking over the strip plate when they shouldn't. 🛞
Truly mindblowing.
Interesting
I am really looking forward for the video about carbon :O
Please check out our channel as we have many videos looking at carbon from different ankles. Here couple of them you can start with. 🙌
✅ "Why carbon offsets are worse than you think"
czcams.com/video/61SWIYwCaSE/video.html
✅ "Can carbon capture ACTUALLY work?"
czcams.com/video/JHs-eWHb16g/video.html
There's 118 elements (known) so they have a lot to choose from
I call it "SillyCon Valley" because, well, there's been SO much bullsh*t coming out of the valley these days.
I think in the future wouldn't use a material for semiconductors. Let's hope they use less water or no water at all, and the protection of making them also very easy, also the material that needs to be making them is abundant, easy to get to.
There materials that perovskite crystal structures require are very abundant. We release a video on them today so stay tuned! ✨🙌
1. NLP will help to improve the power and efficiency of Computers
2. Peroskites will be helping to improve the efficiency of solar panels.
We have reached the maximum potential of the current technologies being used in these two sectors. However, we can increase the efficiency and reduce effective cost, of these systems.
silicon or silicone?
Conman City
If If We Have A MicroSlicon🤔
If you mean micro silica (silica fume), it is primarily used in construction industry. For solar panels, the silicon has to be highly purified silicon to create the semiconductor material.
S.T.E.M. Valley
How about Silicone Valley?
Have they considered graphene or alternatives etc 🤔
I think the guy from the King Abdullah university is fake, I mean almost everything he said is false and an engineer would easily disprove it using public information and leaks.
But there are so many technical mistakes in the video in general, disliking this one, holy crap.
New name for SillyCon Alley, Propaganda Control Alley
Modiji: Renaming? We got you covered.🤝
What about Fentanyl land?
As the valley sends it’s toxic waste to other states for disposal how about Toxic Valley?
Woke Wasteland. That works.
Silicon Valley still fits given that what half the women there seem to be made of
Silicon and silicone are not the same thing...
germany should worry about their own silicon instead of what usa calls the area where they develop no?