शैडोइंग अभ्यास: How to fix clean energy’s storage problem - वीडियो के साथ अंग्रेजी बोलना सीखें

अभ्यास मोड चुनें

हर मोड पूरी स्क्रीन का अभ्यास कक्ष खोलता है।

72 वाक्य

यदि वाक्य बहुत छोटे या लंबे हों, तो समायोजित करने के लिए Edit पर क्लिक करें।

This is the typical demand for electricity on a spring day in California.

It starts growing around 6 a .m., then rises again around 6 p .m.

Now, this line shows when wind power feeds the California power grid.

Wind is variable, but often picks up at night.

Solar panels, on the other hand, kick into gear around 7 a .m., generate a lot of electricity until the sun sets around 7 p .m.

On most days, neither comes close to meeting the peak demands of the day.

So, the power company relies on fossil fuels, like natural gas, to make up for the gap, which widens significantly when people use electricity the most.

Since the power company can't store the solar and wind energy, it has to use fossil fuels at these times,

which can be stored in barrels and tanks.

It's kind of the big gap in our renewable energy system right now.

If we don't figure out a way to store renewable energy, there's a chance that we're going to be still dependent on fossil fuels.

So, how do we store some of this solar and wind energy for later?

Right now you might be thinking, just use a battery.

And you're not wrong.

Batteries have improved immensely over the past few years, particularly lithium -ion batteries, which use a chemical reaction to store energy.

Individual homes that have solar panels often use lithium -ion batteries to store energy.

But there's a few reasons lithium -ion isn't perfect for the grid.

This is Neil Dinesha, a founding writer at Heatmap, a climate news site, and he wrote about this for Vox in 2022.

One is just the scale that's needed.

We would need a lot at a level that we just don't really have right now.

That's a challenge because lithium is only found in a few places on earth.

But more importantly, like we need lithium -ion batteries for other things.

Lithium -ion battery is really good for stuff that moves because it's relatively light.

Meaning it's better suited for things like electric cars and portable electronics, not power grids that stay still.

Luckily, there's another energy storage solution that's actually been around for a long time.

This is the site for the first pump storage hydroelectric station in Southern Ireland.

This is a type of energy storage called pump storage hydro.

They were first built in Europe.

The U .S built one in 1929.

And many more were built in the 1970s and 80s as a way to store nuclear power.

Today, these facilities are all over the world.

There are 39 of them in the U .S.

And they store energy in a really fascinating yet simple way.

When energy demand is low,

renewable or fossil fuel energy is used to pump water from a reservoir or river up a mountain into a higher reservoir.

Basically converting this energy into what's called potential energy.

So potential energy, you might kind of remember from high school physics.

When a thing is up at a height, it has stored potential energy.

When it's let go, it turns into kinetic energy.

When that energy is needed, the water is released down the mountain,

where it's converted into kinetic energy that spins a turbine and generates electricity for the grid.

It's a way of combining water, a mountain, and gravity into a battery, and it can be about 90 % efficient,

meaning only 10 % of this energy is lost in the process.

Pump storage hydro works really well, but it's difficult to build more.

Well, for starters, you need a mountain, and you need to haul out a mountain to put pumps inside it,

and it takes a lot of money, and we don't have mountains everywhere.

So the ideal way to store renewable energy would be something that's cheaper and smaller than a pump storage hydro plant,

but works in roughly the same way.

One company, Energy Vault, is also using gravity to store renewable energy, but without the water or mountain.

Instead, renewable energy is used to lift heavy blocks of concrete up into the air, where it becomes potential energy.

Then when it's needed, the blocks are released, spinning a turbine, which converts the potential energy back into electricity.

Energy Vault calls this gravity energy storage, and while it's still being tested, the company claims it could be more than 80 % efficient.

A company called QuidNet is working on a different version of the same principle.

Their geomechanical pump storage unit uses renewable energy to pump water underground into a pressurized hole, where it can be stored as potential energy,

then released back up to the surface to spin a turbine and generate electricity.

Both techniques are betting on potential energy as a solution for storing renewable energy for the grid.

I think this partly because potential energy has shown itself to be pretty efficient.

Also, realistically, fewer moving parts.

If all you're doing basically is using gravity to work with you, you have a pretty massive force of nature on your side right there.

But potential energy isn't the only possible solution.

Other companies are using renewable energy to superheat salt, insulating it, then releasing that heat to create steam or hot air to drive a turbine.

Basically storing renewables by converting them to thermal energy.

Then there's a company that's betting on rusted iron.

They're called iron air batteries and what they do is they utilize the chemical reaction

that creates rust to store and discharge energy.

This thing

that we all sort of think of as an inconvenience could be really useful is just kind of beautiful to me.

Right now these ideas are all in various stages of development, but they are attracting investors.

And the hope is that several will work because one might not fit every power grid.

The grid, renewable energy overall, is going to be a sort of patchwork solution.

And so the more we try these solutions,

the closer we get to figuring out exactly what the right mix is for what we need for the greater future.

ऐप डाउनलोड करें

धाराप्रवाह बोलने के लिए ज़रूरी सब कुछ

AI उच्चारण स्कोरहर वाक्य का स्कोर

IPA अभ्यासहर ध्वनि में महारत

शब्दावलीअपना शब्द भंडार बनाएँ

शब्द गेमखेलते हुए सीखें

QR स्कैन करें

Download on theApp Store Get it onGoogle Play

उसी चैनल से

FOR YOU

अनुशंसित वीडियो

130 वाक्य

The Truth About How Data Centers Use Water And Power To Keep Cool

Daily ConversationUniversity StudentsWorking Adults

111 वाक्य

The Craziest Ways Ancient Humans Made Fire #AncientHumans #History #Survival

Daily ConversationUniversity StudentsWorking Adults

497 वाक्य

The unstoppable green revolution: Adam Tooze on the "most dramatic story in the history of energy”

Daily ConversationUniversity StudentsWorking Adults

156 वाक्य

How Quantum Batteries Break Every Rule of Charging

Daily ConversationUniversity StudentsWorking Adults

82 वाक्य

How To Clear Icy Roads, With Science

Daily ConversationUniversity StudentsWorking Adults

34 वाक्य

Digital twins for smarter power grids | Vietnam Today

Daily ConversationUniversity StudentsWorking Adults

67 वाक्य

How Agri-Voltaics are Changing Agriculture | The Power of Solar Panels | EyeTech

Daily ConversationUniversity StudentsWorking Adults

81 वाक्य

Radioactive Waste - The Journey to Disposal

Daily ConversationUniversity StudentsWorking Adults

396 वाक्य

Something is jamming GPS over Europe. Here's what we found

Daily ConversationUniversity StudentsWorking Adults

65 वाक्य

How do microSD Cards Store 2 TB in such a TINY space?

Daily ConversationUniversity StudentsWorking Adults

57 वाक्य

How will the Iran war affect Ireland's electricity prices? | RTÉ News

Business EnglishDaily ConversationUniversity Students

इस पाठ की शब्दावली और बोलने के सुझाव

यह स्पीकिंग पाठ वीडियो “How to fix clean energy’s storage problem” पर आधारित है। सबसे ज़्यादा दोहराए गए शब्द ये हैं: energy, renewable, store, potential, pump। इस वीडियो में शैडोइंग के लिए 72 वाक्य और 1011 शब्द हैं। बोला गया हिस्सा 5:21 लंबा है। वक्ता तेज़ बोलता है, लगभग 189 शब्द प्रति मिनट, इसलिए जुड़ी हुई और कमज़ोर ध्वनियाँ ज़्यादा मिलेंगी। केवल 79% शब्द अंग्रेज़ी के 3,000 सबसे आम शब्दों में से हैं, इसलिए शब्दावली कठिन है।

इस वीडियो की मुख्य शब्दावली

वीडियो के 15 सीखने लायक शब्द, उच्चारण और अर्थ के साथ:

शब्द	उच्चारण	अर्थ
pump संज्ञा	/pʌmp/	पंप, पम्प
grid संज्ञा	/ɡɹɪd/	झर्झर, जाली
lithium संज्ञा	/ˈlɪθi.əm/	लघ्वातु
gravity संज्ञा	/ˈɡɹævɪti/	गुरुत्व, गंभीरता
fossil संज्ञा	/ˈfɑsl̩/	जीवाश्म
turbine संज्ञा	/ˈtɜː.baɪn/	टर्बाइन
generate क्रिया	/ˈd͡ʒɛn.ə.ɹeɪt/	उपजाना
reservoir संज्ञा	/ˈɹɛz.ə(ɹ).vwɑɹ/	कोश
rust संज्ञा	/ɹʌst/	मोरचा, जंग
technique संज्ञा	/tɛkˈniːk/	तकनीक
ideal विशेषण	/aɪˈdi(ə)l/	आदर्श, श्रेष्ठ
physics संज्ञा	/ˈfɪz.ɪks/	भौतिक शास्त्र, भौतिकी
principle संज्ञा	/ˈpɹɪn.sɪ.pəl/	जड़सूत्र, असूल
underground विशेषण	/ˌʌn.dəɹˈɡɹaʊnd/	भूमिगत, अंतर्भौम
dependent विशेषण	/dɪˈpɛndənt/	आश्रित, निर्भर

इस वीडियो का व्याकरण

वक्ता जिन संरचनाओं का सबसे अधिक प्रयोग करता है, वीडियो के असली शब्दों के साथ:

संरचना	वीडियो में
Passive voice be + past participle — ज़ोर इस पर कि क्या होता है, न कि कौन करता है	can be stored · is only found · were built
Present perfect have/has + past participle — बीता हुआ काम जिसका असर अभी भी है	have improved · that's actually been · has stored

ध्यान देने योग्य उच्चारण

वक्ता 10 बार संक्षिप्त रूपों का प्रयोग करता है, जैसे don't, isn't, you're। इन्हें वैसे ही छोटा बोलें जैसा आप सुनते हैं।

“th” की ध्वनियाँ: lithium /ˈlɪθi.əm/, thermal /ˈθɜːməl/
“sh” और “zh” की ध्वनियाँ: efficient /ɪˈfɪʃənt/, pressurize /ˈpɹɛʃəɹaɪz/
लंबे शब्द — बलाघात सही रखें: electricity /ɪˌlɛkˈtɹɪsɪti/, electronics /ɪˌlɛkˈtɹɑ.nɪks/, importantly /ɪmˈpɔɹ.tənt.li/, inconvenience /ɪnkənˈvinjəns/, hydroelectric /ˌhʌɪdrəʊɪˈlɛktrɪk/

हिंदी भाषियों के लिए मुश्किल ध्वनियाँ:

/v/ और /w/ का फ़र्क़ — /v/ में ऊपर के दाँत निचले होंठ को छूते हैं, /w/ में होंठ गोल होते हैं: gravity /ˈɡɹævɪti/, convert /kənˈvɝt/, reservoir /ˈɹɛz.ə(ɹ).vwɑɹ/, variable [ˈvæɹ.i.ə.bl̩], investor /ɪnˈvɛs.tə(ɹ)/
/z/ — इसे “ज” (/dʒ/) न बनाएँ: reservoir /ˈɹɛz.ə(ɹ).vwɑɹ/, physics /ˈfɪz.ɪks/, utilize /ˈjuː.tɪ.laɪz/, pressurize /ˈpɹɛʃəɹaɪz/
शब्द की शुरुआत में s + व्यंजन — पहले “इ” न जोड़ें: spin /spɪn/, starter /ˈstɑɹ.tɚ/

इस वीडियो से अभ्यास कैसे करें

पहले बिना बोले पूरा वीडियो एक बार सुनें और जो शब्द नहीं आते उन्हें लिख लें।
0.75× गति से शुरू करें, एक-एक वाक्य की शैडोइंग करें, और सहज लगने पर सामान्य गति पर लौटें।
अपनी आवाज़ रिकॉर्ड करें और मूल से तुलना करें, ख़ासकर pump, grid, lithium जैसे शब्दों पर ध्यान दें।

शैडोइंग तकनीक क्या है?

शैडोइंग (Shadowing) एक विज्ञान-समर्थित भाषा सीखने की तकनीक है जो मूल रूप से पेशेवर दुभाषिया प्रशिक्षण के लिए विकसित की गई थी। विधि सरल लेकिन शक्तिशाली है: आप मूल अंग्रेज़ी ऑडियो सुनते हैं और तुरंत इसे ज़ोर से दोहराते हैं — जैसे वक्ता की छाया 1-2 सेकंड की देरी से। शोध से पता चलता है कि यह उच्चारण सटीकता, स्वर, लय, जुड़ी हुई ध्वनियाँ, सुनने की समझ और बोलने की प्रवाहशीलता में काफ़ी सुधार करता है।

शैडोइंग तकनीक: पूरी चरण-दर-चरण गाइड पढ़ें →

शैडोइंग अभ्यास: How to fix clean energy’s storage problem - वीडियो के साथ अंग्रेजी बोलना सीखें

अभ्यास मोड चुनें

ऐप डाउनलोड करें

How Democrats swept the midterms

Why no aquarium has a great white shark

Inside the secret race to build artificial intelligence | The Gray Area

How the Republican Party went from Lincoln to Trump

How to be less neurotic | The Gray Area

The Ticketmaster monopoly is over, now what?

The biggest peach myth in America

How to solve problems like a designer

The origin of the '80s aesthetic

Why “Buy one, get one free” isn’t a great deal

How F1 drivers survive their own cars

White, pink, and brown noise, explained #shorts

Why 350°F is the magic number for baking

Why "pop-up" restaurants are everywhere now

How China is designing flood-resistant cities

The real reason Boeing's new plane crashed twice

Putin's war on Ukraine, explained

The Israel-Palestine conflict: a brief, simple history

Why AI art struggles with hands

Why is everything getting so expensive?

The Truth About How Data Centers Use Water And Power To Keep Cool

The Craziest Ways Ancient Humans Made Fire #AncientHumans #History #Survival

The unstoppable green revolution: Adam Tooze on the "most dramatic story in the history of energy”

How Quantum Batteries Break Every Rule of Charging

How To Clear Icy Roads, With Science

Digital twins for smarter power grids | Vietnam Today

How Agri-Voltaics are Changing Agriculture | The Power of Solar Panels | EyeTech

Radioactive Waste - The Journey to Disposal

Something is jamming GPS over Europe. Here's what we found

How do microSD Cards Store 2 TB in such a TINY space?

How will the Iran war affect Ireland's electricity prices? | RTÉ News

इस पाठ की शब्दावली और बोलने के सुझाव

इस वीडियो की मुख्य शब्दावली

इस वीडियो का व्याकरण

ध्यान देने योग्य उच्चारण

इस वीडियो से अभ्यास कैसे करें

शैडोइंग तकनीक क्या है?