शैडोइंग अभ्यास: Invisible ink science experiment - वीडियो के साथ अंग्रेजी बोलना सीखें
अभ्यास मोड चुनें
हर मोड पूरी स्क्रीन का अभ्यास कक्ष खोलता है।
106 वाक्य
यदि वाक्य बहुत छोटे या लंबे हों, तो समायोजित करने के लिए Edit पर क्लिक करें।
1
Has your kid ever wanted to be a spy or maybe write secret coded notes to their siblings or their friends?
2
Well, today I have an experiment for exactly that called secret friendship notes.
3
Hi everyone, I'm Emily Calandrelli, MIT engineer and host of Emily's Wonder Lab.
4
And on my channel, we learn about all things space and science.
5
So grab some turmeric because we are about to go on a mission.
6
Keep exploring.
7
And this sounds like.
8
Skate carrier.
9
And keep exploring.
10
Today for our secret friendship notes, we are going to draw a secret message with a baking soda solution, set it aside to dry,
11
and then once it's dry, we are going to reveal it with a turmeric solution.
12
Okay?
13
So for our baking soda solution, what you need is one cup of water plus one tablespoon of baking soda.
14
To draw your message, you'll want a few paintbrushes, and then later for your turmeric solution,
15
you want one half cup water with one teaspoon of turmeric.
16
And parents and adults, if you've worked with turmeric before, you know that it stains everything.
17
Fingers and counters and bowls and basically anything it touches.
18
So please exercise caution here.
19
It is why I have my tinfoil on the counter because I'm trying to save this counter from the turmeric.
20
So just be careful here.
21
So first, we are going to make our baking soda solution.
22
This is going to be our paint that we paint the secret message
23
that you're not going to be able to see after it dries.
24
So let's go ahead and do one cup of water.
25
Right in a bowl.
26
And now, let's add one tablespoon of baking soda.
27
Just like this.
28
And then go ahead and mix it up.
29
You'll notice that the baking soda won't completely dissolve in the water, and that's okay.
30
If you have a little bit of baking soda on the bottom, that's all right.
31
We're just trying to create as much of a baking soda solution as we can
32
because it's the baking soda that is the very key ingredient to our secret message here.
33
Once you've mixed that up about as good as you can, we're going to take our paintbrush and use this
34
and our baking soda solution to write our secret message on a piece of computer paper.
35
So I'm going to take one sheet of computer paper here,
36
set this aside and write my message here trying to get as much baking soda on your paintbrush as you can.
37
Tap it off.
38
You don't want it to be too wet.
39
Okay, now that I've written my secret message, I'm going to set it aside to dry.
40
It'll take between 10 minutes to an hour, really depending on how much water you use on your paper.
41
But if you want this message to be completely secret,
42
You want it to be completely dry because once it's completely dry because the baking soda is white
43
It's so hard to see this is the secret part of these secret friendship notes
44
So try to let it completely dry before you move on to the next step
45
Once your secret friendship note is dry
46
You can give it to a friend with the magic reveal paint and the magic reveal paint is our turmeric solution
47
So let's go ahead and make that we're going to do one half cup water there plus plus one teaspoon turmeric.
48
I'm using my one half teaspoon here because it fits in the turmeric because I'm just trying to avoid spills here.
49
One half teaspoon plus, plus one half teaspoon equals one teaspoon.
50
I'm gonna go ahead and mix this up.
51
Again, it'll be a little clumpy.
52
This is because turmeric is not soluble in water.
53
It's soluble in alcohol, but we're just gonna do our best here.
54
We just wanna suspend the turmeric in the water as best we can.
55
Now here's the fun part.
56
So we're going to take our turmeric solution
57
and with a big paintbrush you're going to tell your friend
58
that to reveal the secret message they just need to paint the paper with the magic reveal paint.
59
You just want to go ahead and paint the entire thing.
60
I'm going to take my secret message here and I'm just going to paint on top of it.
61
Because look at this.
62
It's very hard to see what this says.
63
Right?
64
What is my secret note saying?
65
I don't know.
66
Let's reveal it.
67
Here we go.
68
Look at that.
69
Look at the turmeric reacting with our baking soda here.
70
Do you see what's happening?
71
Look at this.
72
Everywhere that our turmeric is touching the paper, it's yellow, kind of what you would expect, like the color of turmeric.
73
But when it touches the part where we had baking soda, do you see the color it turned?
74
It turns red.
75
Why does that happen?
76
Well, it's because turmeric is something known as a natural pH indicator.
77
which means it changes colors when it's in the presence of an acid and a base.
78
What is baking soda?
79
Well, it's sodium bicarbonate or a base.
80
And so when turmeric interacts with baking soda, it turns red.
81
It goes from yellow to red to indicate that it is in the presence of a base.
82
Here's a trick to make your secret note even more secretive use cardstock
83
because cardstock doesn't absorb the water as much so you don't have those obvious ripples in the paper.
84
It takes a little longer for the water to dry but once it does it's even harder to see your message.
85
So let's go ahead and reveal this one.
86
Get my turmeric secret reveal paint on my paintbrush.
87
Watch with each brush stroke I'm revealing a part of my secret message.
88
You see what it says here?
89
It says, Stay curious and keep exploring.
90
You send your friend this message, but they have no idea what it says.
91
You tell them to reveal it with your magic turmeric paint.
92
Let's see.
93
You see what it says?
94
Meat in the treehouse.
95
Home.
96
And the best part is that your secret friendship note smells amazing.
97
Very spicy.
98
Smells great.
99
Thank you for making secret friendship notes with me.
100
If you like this one, be sure to check out my bestselling
101
Stay Curious and Keep Exploring book series for 99 more science experiments.
102
I'm Emily Calandrelli.
103
Subscribe for all things science and space.
104
And remember, stay curious and keep exploring.
105
I'll see you next time.
106
Emily's Science Lab
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
FOR YOU
अनुशंसित वीडियो
A21
180 वाक्य
Real life NATURAL English to Practice With Your Child 🍂
KidsDaily ConversationWorking Adults
A21
113 वाक्य
The UFO Mystery | Home Safety Rules for Kids | Police Cartoon | Sheriff Labrador
KidsDaily Conversation
B129
13 वाक्य
We Tried 4 Alternatives to Mentos in Cola… Which One Works Best?
KidsDaily Conversation
A22
40 वाक्य
Shadow | Science for Kids
KidsDaily Conversation
A23
31 वाक्य
unit 6 grade 6 spelling #animation
KidsDaily Conversation
A23
62 वाक्य
Why Does Cooking Eggs Make Them Hard? | The Science of Cooking | SciShow Kids
KidsDaily Conversation
A24
20 वाक्य
The Secret Ingredient
KidsTeensDaily Conversation
A21
20 वाक्य
EASY SCIENCE EXPERIMENTS TO DO AT HOME
KidsDaily Conversation
A22
159 वाक्य
Vlog 💦: Henry's Classroom Prank Went WRONG... THEN He FREAKED OUT! 😱🍫 | Slow English (A2)
KidsDaily Conversation
A21
25 वाक्य
How to Bake a Cake Kids' Style
KidsDaily Conversation
A26
117 वाक्य
FLYERS 2 TEST 2 PART 4
KidsDaily Conversation
B15
218 वाक्य
Revealing 5 Secret Magic Tricks With Science
KidsDaily Conversation
इस पाठ की शब्दावली और बोलने के सुझाव
यह स्पीकिंग पाठ वीडियो “Invisible ink science experiment” पर आधारित है। सबसे ज़्यादा दोहराए गए शब्द ये हैं: secret, turmeric, baking, soda, message। इस वीडियो में शैडोइंग के लिए 106 वाक्य और 1095 शब्द हैं। बोला गया हिस्सा 7:15 लंबा है। वक्ता लगभग 151 शब्द प्रति मिनट की स्वाभाविक गति से बोलता है, जो रोज़मर्रा की बातचीत के करीब है। 83% शब्द अंग्रेज़ी के 3,000 सबसे आम शब्दों में से हैं; बाकी शब्द अभ्यास से पहले देख लेना अच्छा रहेगा।
इस वीडियो की मुख्य शब्दावली
वीडियो के 15 सीखने लायक शब्द, उच्चारण और अर्थ के साथ:
| शब्द | उच्चारण | अर्थ |
|---|---|---|
| bake क्रिया | /beɪk/ | सेंकना |
| friendship संज्ञा | /ˈfɹɛn(d)ʃɪp/ | मित्रता, मैत्री |
| explore क्रिया | /ɪkˈsploɹ/ | अन्वेषण करना |
| curious विशेषण | /ˈkjʊɹ.i.əs/ | उत्सुक, जिज्ञासु |
| experiment संज्ञा | /ɪkˈspɛɹ.ə.mənt/ | प्रयोग, तजुर्बा |
| finger संज्ञा | /ˈfɪŋɡɚ/ | उंगली, अंगुल |
| trick संज्ञा | /ˈtɹɪk/ | चाल |
| acid संज्ञा | /ˈæsɪd/ | अम्ल, एसिड |
| sheet संज्ञा | /ʃit/ | पत्र, चद्दर |
| indicate क्रिया | /ˈɪndɪˌkeɪt/ | सूचित करना, संकेत करना |
| carrier संज्ञा | /ˈkæɹi.ɚ/ | कहार |
| brush संज्ञा | /bɹʌʃ/ | ब्रश, बुरुश |
| caution संज्ञा | /ˈkɔːʃ(ə)n/ | चेतावनी |
| sodium संज्ञा | /ˈsəʊ.di.əm/ | क्षारातु, सोडियम |
| spill क्रिया | /spɪl/ | छलकना |
वीडियो में आने वाली फ़्रेज़ल वर्ब
| शब्द | उच्चारण | अर्थ |
|---|---|---|
| go ahead क्रिया | /ˌɡoʊ əˈhɛd/ | आगे बढ़ना |
दोहराने लायक वाक्य
वीडियो के छोटे, पूरे वाक्य जिन्हें आप रोज़ की बातचीत में इस्तेमाल कर सकते हैं:
- You don't want it to be too wet.
- What is my secret note saying?
- Do you see what's happening?
- You see what it says here?
- You see what it says?
इस वीडियो का व्याकरण
वक्ता जिन संरचनाओं का सबसे अधिक प्रयोग करता है, वीडियो के असली शब्दों के साथ:
| संरचना | वीडियो में |
|---|---|
| Present perfect have/has + past participle — बीता हुआ काम जिसका असर अभी भी है | you've worked · I've written |
| क्रिया + -ing enjoy, keep, stop… + -ing — वे क्रियाएँ जिनके बाद -ing रूप आता है | Keep exploring |
| Superlatives the -est / the most … — समूह में सबसे ऊपर या नीचे | our best · the best |
| “going to” से भविष्य be going to + क्रिया — योजना या जो साफ़ होने वाला है | are going to draw · are going to reveal · are going to make |
ध्यान देने योग्य उच्चारण
वक्ता 34 बार संक्षिप्त रूपों का प्रयोग करता है, जैसे I'm, we're, don't। इन्हें वैसे ही छोटा बोलें जैसा आप सुनते हैं।
- “sh” और “zh” की ध्वनियाँ: friendship /ˈfɹɛn(d)ʃɪp/, sheet /ʃit/, brush /bɹʌʃ/, caution /ˈkɔːʃ(ə)n/, paintbrush /ˈpeɪntˌbɹʌʃ/
- लंबे शब्द — बलाघात सही रखें: experiment /ɪkˈspɛɹ.ə.mənt/, indicator /ˈɪn.dɪˌkeɪ.tə(ɹ)/, ingredient /ɪnˈɡɹiːdi.ənt/, bicarbonate /baɪˈkɑɹ.bə.neɪt/
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: reveal /ɹɪˈviːl/, dissolve /dɪˈzɑlv/, secretive /ˈsiːkɹɪtɪv/
- शब्द की शुरुआत में s + व्यंजन — पहले “इ” न जोड़ें: spill /spɪl/, spicy /ˈspaɪsi/, skate /skeɪt/, stain /steɪn/
- /æ/ — “ऐ” से ज़्यादा खुला: acid /ˈæsɪd/, carrier /ˈkæɹi.ɚ/, react /ɹiːˈækt/, interact /ɪn.təˈɹækt/, absorb /æbˈsɔɹb/
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 bake, friendship, explore 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।