शैडोइंग अभ्यास: Parts of a Microscope & How to Use a Microscope - वीडियो के साथ अंग्रेजी बोलना सीखें
अभ्यास मोड चुनें
हर मोड पूरी स्क्रीन का अभ्यास कक्ष खोलता है।
46 वाक्य
यदि वाक्य बहुत छोटे या लंबे हों, तो समायोजित करने के लिए Edit पर क्लिक करें।
1
in this video we're going to learn about microscopy which just means the use of microscopes
2
so we'll cover what a microscope is what the terms object image and magnification mean
3
the different parts of a light microscope and finally how to use a light microscope To start off,
4
we need to know what a microscope is.
5
So a microscope is a tool that we use in science to make things look much larger than they actually are, and so help us see tiny details.
6
For example, we often use microscopes in biology to look at cells, which we can't see with the naked eye, but can see with a microscope.
7
before we go any further we need to introduce the terms object
8
and image in microscopy the term object refers to the real object
9
or the sample that you're looking at so
10
if we had some onion cells on our microscope slide then these cells themselves would be the object
11
the term image on the other hand refers to the image that we see when we look down the microscope
12
for example if we were to look down this microscope we might see something like this
13
so this would be our image whereas the object is the actual onion cells on the microscope slide
14
that we're looking at this brings us nicely to the next term you need to know magnification
15
which we can define as how many times larger the image is than the object
16
So if the image appeared 1 ,000 times larger than the object, then the magnification would be times 1 ,000.
17
Next, let's move on to look at the different parts of a light microscope.
18
Supporting the whole thing is the base at the bottom, and then the arm that connects the bottom to the top.
19
Then we have some kind of light source, which on some microscopes would be a lamp, But in this case, it's just a mirror reflecting the light from the room.
20
And just above it is the stage, which is where we put our microscope slide.
21
Then in the top half, we have all of our lenses.
22
So we normally have three objective lenses, which we can choose between, and each have different magnifications.
23
And then also an eyepiece lens, which has a fixed magnification.
24
And sits just below where we look into the microscope.
25
Then the last things to notice are the body tube here
26
and the coarse and fine focusing knobs which we can turn to help us get the image in focus.
27
The last thing we need to cover are the main steps of how to use a light microscope.
28
First, we need to set up the microscope near a window
29
or a lamp to make sure there's enough light and angle the mirror to direct the light upwards.
30
This will reflect the light up through the hole in the stage.
31
We then need to take our specimen
32
which is the scientific word for whatever it is you'll be looking at
33
and place it on a thin glass plate called a slide.
34
Next we take our slide with the specimen on, place it onto the stage and secure it.
35
This means we put it just here so the light reflected shines through the specimen and up through the microscope.
36
Now that our slide is in place, we can look through the eyepiece lens and adjust the focus.
37
So first we turn the coarse focus knob to get a rough image
38
and then we can turn the fine focus knob to fine
39
-tune it until we have a clear magnified view of our
40
specimen finally this part here where the objective lenses are can
41
rotate to switch to an objective lens with a higher magnification
42
then you can adjust the focus again to bring the specimen back into clear view
43
if you haven't heard yet you can find all of our videos on our website cognito .org You'll also find questions,
44
flashcards, exam -style questions, and past papers.
45
And we track all of your progress so that you always know what to study next.
46
So sign up for free by clicking here or browse our playlist here on YouTube.
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
उसी चैनल से
C1GCSE Physics - Energy Stores, Transferring Energy & Work Done
Daily ConversationUniversity Students
C14
GCSE Physics - Speed, Velocity, Distance & Displacement | Scalar & Vector Quantities (2026/27 exams)
Cambridge Exam PrepHigh School StudentsUniversity Students
C15
KS3 Chemistry - The periodic Table
Cambridge Exam PrepHigh School StudentsUniversity Students
C11
GCSE Biology - The Lungs & Gas Exchange (2026/27 exams)
High School Students
B2GCSE Biology - Drug Development and Testing - Clinical Trials (2026/27 exams)
Daily ConversationHigh School Students
C1GCSE Biology - What are Stem Cells? Difference Between Embryonic and Adult Stem Cells
Daily ConversationUniversity Students
B1GCSE Maths - Alternate, Corresponding and Allied Angles - Parallel Lines Angle Rules (2026/27 exams)
High School Students
FOR YOU
अनुशंसित वीडियो
B11
88 वाक्य
How to Learn the 8 Parts of Speech
Daily ConversationHigh School Students
A23
17 वाक्य
How do Electron Microscopes (Scanning) Work? + more videos | #aumsum #kids #science #education
KidsTeensDaily Conversation
B21
425 वाक्य
NEW- Micro Unit 1 Summary- Basic Economic Concepts
Daily ConversationHigh School StudentsUniversity Students
B23
71 वाक्य
Space Exploration – Beyond Our Planet
Daily ConversationHigh School Students
A21
165 वाक्य
a an the شرح ادوات التعريف في اللغة الانجليزية : شرح قاعدة a an the ✅
Daily ConversationHigh School Students
B21
535 वाक्य
Stroll Through the Playlist (a Biology Review)
Daily ConversationHigh School Students
B138
259 वाक्य
Human Body Podcast | Learn English with Science 🧠💡| B1
Daily ConversationHigh School StudentsUniversity Students
B113
156 वाक्य
How to Describe a Picture in English - Spoken English Lesson
British AccentCambridge Exam PrepDaily ConversationHigh School Students
B12
651 वाक्य
Learn English | Reading for Vocabulary | Level B | Lesson 05 | Brian Stuart (미국교과서)
Daily ConversationHigh School StudentsUniversity Students
A21
116 वाक्य
Luyện nghe chép chính tả Tiếng Anh | Level 2 - Unit 10
Daily ConversationHigh School Students
B1111 वाक्य
Speaking Units 1-4 انجليزي ثاني ثانوي التحدث
Daily ConversationHigh School Students
B15
367 वाक्य
Intermediate English | Car Vocabulary You’ll Actually Use 🚗
Travel EnglishTeensDaily Conversation
इस पाठ की शब्दावली और बोलने के सुझाव
इस वीडियो में शैडोइंग के लिए 46 वाक्य और 698 शब्द हैं। बोला गया हिस्सा 4:40 लंबा है। वक्ता लगभग 149 शब्द प्रति मिनट की स्थिर गति से बोलता है, जो शैडोइंग के लिए आरामदायक है। 84% 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 |
|---|---|---|
| microscope संज्ञा | /ˈmaɪ.kɹəˌskoʊp/ | ख़ुर्दबीन, सूक्ष्मदर्शी |
| lens संज्ञा | /lɛnz/ | लेंस |
| reflect क्रिया | /ɹɪˈflɛkt/ | प्रतिबिंबित करना |
| objective संज्ञा | /ɒbˈd͡ʒɛk.tɪv/ | उद्देश्य, मक़सद |
| mirror संज्ञा | /ˈmiɹɚ/ | दर्पण, शीशा |
| lamp संज्ञा | /ˈlæ̝mp/ | चिराग़, लैंप |
| onion संज्ञा | /ˈʌn.jən/ | पियाज़, प्याज़ |
| thin विशेषण | /ˈθɪn/ | पतला, दुबला |
| naked विशेषण | /ˈneɪkɪd/ | नंगा, नग्न |
| angle संज्ञा | /ˈæŋ.ɡəl/ | कोण |
| introduce क्रिया | /ˌɪntɹəˈdus/ | परिचय |
| tune संज्ञा | /tjuːn/ | धुन |
| examination संज्ञा | /ɪɡˌzæm.ɪˈneɪ.ʃən/ | परीक्षण |
| biology संज्ञा | /baɪˈɑ.lə.d͡ʒi/ | जीवविज्ञान, जैविकी |
| shine क्रिया | /ʃaɪn/ | चमकना, जगमगाना |
इस वीडियो का व्याकरण
वक्ता जिन संरचनाओं का सबसे अधिक प्रयोग करता है, वीडियो के असली शब्दों के साथ:
| संरचना | वीडियो में |
|---|---|
| Relative clauses who / which + उपवाक्य — व्यक्ति या वस्तु के बारे में अतिरिक्त जानकारी | stage, which is · lens, which has |
| Comparatives -er than / more … than — दो चीज़ों की तुलना | larger than |
| ज़रूरत: must / have to / need to बताना कि कोई काम ज़रूरी है | need to know · need to introduce · need to set |
| “will” से भविष्य will + क्रिया — फ़ैसला, वादा या अनुमान | we'll cover · will reflect · you'll be |
ध्यान देने योग्य उच्चारण
वक्ता 8 बार संक्षिप्त रूपों का प्रयोग करता है, जैसे we're, you'll, can't। इन्हें वैसे ही छोटा बोलें जैसा आप सुनते हैं।
- “sh” और “zh” की ध्वनियाँ: examination /ɪɡˌzæm.ɪˈneɪ.ʃən/, shine /ʃaɪn/, magnification /ˌmæɡnɪfɪˈkeɪʃən/, flashcard /ˈflæʃˌkɑɹd/
- लंबे शब्द — बलाघात सही रखें: examination /ɪɡˌzæm.ɪˈneɪ.ʃən/, biology /baɪˈɑ.lə.d͡ʒi/, magnification /ˌmæɡnɪfɪˈkeɪʃən/, microscopy /maɪˈkɹɑ.skə.pi/
इस वीडियो से अभ्यास कैसे करें
- पहले बिना बोले पूरा वीडियो एक बार सुनें और जो शब्द नहीं आते उन्हें लिख लें।
- सामान्य गति पर एक-एक वाक्य की शैडोइंग करें और हर वाक्य तब तक दोहराएँ जब तक आपकी लय वक्ता से न मिल जाए।
- अपनी आवाज़ रिकॉर्ड करें और मूल से तुलना करें, ख़ासकर microscope, lens, reflect 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।