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YQ Tech
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We post educational materials for computer science students & Professionals that cover essential topics such as: #Java, #Python, #SQL, #Spring, #Spring Boot, #React, #AngularJS, #HTML, #CSS, #JavaScript.
For inquiries, contact us on: yq-tech@gmail.com
Thank you, Keep Learning!
We post educational materials for computer science students & Professionals that cover essential topics such as: #Java, #Python, #SQL, #Spring, #Spring Boot, #React, #AngularJS, #HTML, #CSS, #JavaScript.
For inquiries, contact us on: yq-tech@gmail.com
Thank you, Keep Learning!
#41: JavaScript Tutorial | Try, Catch Finally Statement
In JavaScript, the try, catch, and finally statements are used for handling errors and executing cleanup code regardless of whether an error occurs or not.
The try block encloses the code that might throw an error.
If an error occurs within the try block, control jumps to the catch block. The catch block specifies what to do if an error occurs. The error object is automatically passed to the catch block.
The finally block encloses code that should be executed regardless of whether an error occurred or not. This block is optional, but if it's present, it will always execute, even if an error occurred or if there's a return statement inside the try or catch block.
The try block encloses the code that might throw an error.
If an error occurs within the try block, control jumps to the catch block. The catch block specifies what to do if an error occurs. The error object is automatically passed to the catch block.
The finally block encloses code that should be executed regardless of whether an error occurred or not. This block is optional, but if it's present, it will always execute, even if an error occurred or if there's a return statement inside the try or catch block.
Просмотров: 248
Видео
#40: JavaScript Tutorial | Local VS Global VS Block Scope
Просмотров 2556 месяцев назад
Local Scope: 1. Variables declared inside a function. 2. Limited to the function they are declared in. 3. Accessible only within the function block. Global Scope: 1. Variables declared outside of any function. 2. Accessible from anywhere in the code. 3. Persist throughout the lifetime of the program. 4. Can lead to namespace pollution if not managed properly. Block Scope: 1. Introduced by block...
#39: JavaScript Tutorial | LET VS VAR
Просмотров 2116 месяцев назад
JavaScript: 1. Scope: • var has function scope. • let has block scope. 2. Hoisting: • Variables declared with var are hoisted to the top of their function or global scope. • Variables declared with let are hoisted to the top of their block scope but are not initialized. 3. Redeclaration: • Variables declared with var can be re-declared within the same scope without an error. • Variables declare...
#38: JavaScript Tutorial | Getters and Setters
Просмотров 1996 месяцев назад
Let's learn the Javascript get and set keywords
#2: HTML | FAQs
Просмотров 1137 месяцев назад
00:07 What are the different tags to separate sections of text? 00:23 Are there instances where the text will appear outside of the browser? 00:39 Write an HTML table tag sequence that outputs the following? 00:53 What is the advantage of grouping several checkboxes together? 01:14 What happens if there is no text between the tags? Does this affect the display of the HTML file? 01:33 What are t...
#2: HTML | Interview Questions and Answers for beginners
Просмотров 1207 месяцев назад
00:06 What is the purpose of using alternative texts and images 00:31 Is the DOCTYPE html tag considered an HTML tag? 01:05 Why is a URL encoded in HTML? 01:29 What is the use of an iframe tag? 01:41 What are the entities in HTML? 02:00 Can you create a multi-colored text on a web page 02:15 How to make a picture of a background image of a web page? 02:34 What is the use of a span tag? 02:48 wh...
#1: HTML | Interview Questions and Answers for beginners
Просмотров 1177 месяцев назад
00:07 What is HTML? 00:32 What is the difference between HTML elements and tags? 00:59 What are attributes and how do you use them? 01:31 What is the difference between a block level element and an inline element? 02:20 When are comments used in HTML? 02:46 What are the HTML tags used to display the data in the tabular form? 03:44 How to create a Hyperlink in HTML? 04:13 Name some common lists ...
#3: REST API | Interview Questions and Answers for beginners
Просмотров 2407 месяцев назад
#3: REST API | Interview Questions and Answers for beginners
#2: REST API | Interview Questions and Answers for beginners
Просмотров 2598 месяцев назад
#2: REST API | Interview Questions and Answers for beginners
#1: REST API | Interview Questions and Answers for beginners
Просмотров 2518 месяцев назад
#1: REST API | Interview Questions and Answers for beginners
#37: JavaScript Tutorial | How to Remove elements from Array
Просмотров 2238 месяцев назад
#37: JavaScript Tutorial | How to Remove elements from Array
#36: JavaScript Tutorial | Rest Operator
Просмотров 3609 месяцев назад
#36: JavaScript Tutorial | Rest Operator
#35: JavaScript Tutorial | The Arguments Object in Functions
Просмотров 3329 месяцев назад
#35: JavaScript Tutorial | The Arguments Object in Functions
#33: JavaScript Tutorial | Function Declaration and function Expression in JavaScript
Просмотров 3099 месяцев назад
#33: JavaScript Tutorial | Function Declaration and function Expression in JavaScript
#32: JavaScript Tutorial | Emptying an Array
Просмотров 3479 месяцев назад
#32: JavaScript Tutorial | Emptying an Array
#31: JavaScript Tutorial | Finding Reference Type Element in Array
Просмотров 4519 месяцев назад
#31: JavaScript Tutorial | Finding Reference Type Element in Array
#29: JavaScript Tutorial: Find element in array | find | include | indexOf
Просмотров 3469 месяцев назад
#29: JavaScript Tutorial: Find element in array | find | include | indexOf
#28: JavaScript Array | Add Element to Array | Array Push Method | Array Unshift Method
Просмотров 3499 месяцев назад
#28: JavaScript Array | Add Element to Array | Array Push Method | Array Unshift Method
#27: JavaScript Tutorial | Reference Vs Value In JavaScript
Просмотров 22210 месяцев назад
#27: JavaScript Tutorial | Reference Vs Value In JavaScript
#4: JavaScript Interview Questions and answers
Просмотров 849Год назад
#4: JavaScript Interview Questions and answers
#3: JavaScript Interview Questions and answers
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#3: JavaScript Interview Questions and answers
#2: JavaScript Interview Questions and answers
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#2: JavaScript Interview Questions and answers
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#1: JavaScript Interview Questions and answers
#3: Top 20 Hibernate Interview Questions and answers | Hibernate Framework
Просмотров 594Год назад
#3: Top 20 Hibernate Interview Questions and answers | Hibernate Framework
#2: Top 15 Hibernate Interview Questions and answers | Hibernate Framework
Просмотров 619Год назад
#2: Top 15 Hibernate Interview Questions and answers | Hibernate Framework
#1: Top 16 Hibernate Interview Questions and answers | Hibernate Framework
Просмотров 648Год назад
#1: Top 16 Hibernate Interview Questions and answers | Hibernate Framework
#26: JavaScript Tutorial | Math Object in JavaScript
Просмотров 210Год назад
#26: JavaScript Tutorial | Math Object in JavaScript
#25: JavaScript Tutorial | Cloning of Objects in JS
Просмотров 216Год назад
#25: JavaScript Tutorial | Cloning of Objects in JS
If a interstellar-capable civilization didnt want to be detected, *they would not be found by the monkey planet*
Integrating tungsten and laser propulsion into a spacecraft design, with a focus on utilizing infrared radiation as a propulsion mechanism, presents a unique and innovative concept. Here's how it could theoretically work: Tungsten as an Infrared Emitter: Tungsten, when heated, can efficiently emit infrared radiation. In a vacuum, this emission would primarily be in the form of radiative heat transfer. If the tungsten is coated or structured in a way to maximize infrared emission in specific directions, it could act as a directional infrared emitter. Laser Propulsion System: Ground-based or orbiting lasers could be used to provide the initial energy input. These lasers would be tuned to a wavelength that tungsten efficiently absorbs, heating it up. Infrared Radiation for Propulsion: Once the tungsten is heated by the laser, it would emit infrared radiation. This radiation exerts pressure, albeit very low. In space, where there is no air resistance, this small amount of pressure could be used for propulsion. The key here is to have a large surface area of tungsten to maximize the emission and hence the propulsion force. Utilizing Infrared Radiation as a "Sail": Similar to how solar sails use the momentum of photons from sunlight, your spacecraft could use a large, tungsten-based sail to capture and utilize the momentum from infrared radiation. The spacecraft would essentially be riding on a wave of infrared radiation. This would be especially effective if the sail is designed to reflect or re-emit the infrared radiation in a specific direction, providing thrust. Pulse Propulsion: The laser could be pulsed to provide bursts of energy, heating the tungsten periodically. This pulsing action would create a series of thrusts, propelling the spacecraft forward. The frequency and intensity of these pulses could be adjusted to control the speed and direction of the spacecraft. Engineering Challenges: This concept, while theoretically possible, would face significant engineering challenges. The efficiency of converting laser energy to infrared radiation and then to propulsion would need to be optimized. The tungsten sail would have to withstand extreme temperatures repeatedly without degrading. Additionally, the control mechanism for directing the infrared emission and thus steering the spacecraft would require precise engineering and materials science solutions. Current Limitations: It's important to note that this concept, while grounded in physics, is still speculative and would require substantial technological advancements to become feasible. Current limitations in materials science, energy conversion efficiency, and laser technology would need to be overcome. In summary, using a tungsten-based sail to convert laser energy into infrared radiation for propulsion presents an intriguing possibility for space travel, blending concepts of laser propulsion and thermodynamics. However, significant advancements in technology and engineering would be necessary to realize this concept in practice.
Very interesting!
aliens are not real never will be real wen will ppl stop with this nonsense. cool video tho good job
Oumuamua's report back," Planet is still not safe."
That’s a good morning when I see your video in the feed!
Love this x great video
This was the greatest video in history
style, experience, enjoy - classic of your channel friend =)
😻😻😻😻woah
who also thinks the video is worth the like?
I think this is the best I’ve seen till now
i like this idea of the video
Did you delete your discord? I can't contact you anymore
I'm glad that I’m following you Xd Like definitely
Best video every time lol!
Come on! That was fast, want more videos!
excellent💜💗
well that's quite nice
Not sure if i absolutely pleasure but interesting
Zero toxic? Subscribed!
Only idiots believe in alien spacecraft. Thanks for perpetuating the comedy.
My bet is ASEAN as a block will out sprint India by 2030 by a margin! notwithstanding having only one-fifth of her population!
Of the 10 states in the Association of Southeast Asian Nations (Asean), nine have an Indic cultural base. Hence in some ways, they are cultural satellites of India
Do you have a facebook?
Watch the whole channel videos in one day!
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need daily content again :D
Mission accomplished. It's strong video =) Waiting for another one
Thank you for your work!
I'm here for the first time and it's already cool
Very exquisite💎💎💎
waiting for the next video
This video was really better than I expected
❤️Bam :) attractive work you have here
just magnificent video, friend :D
Great video as always, keep up the good work 👍
Subscribed to your channel, I will follow the growth. I think you have a great future
It’s wonderful to watch honest videos, listen to smart people, and to speak
❤️Bam :) attractive work you have here
dislikes put only idiots
Did a good job! Make more and more
It was very interesting to me :p
I'm here for the first time and it's already cool
Finally a new video ♥ ️ ♥ ️ ♥ ️
Very interesting video!
keep it up
We need more video!!
I have subscribed with pleasure!! can't wait to see more of this!! :)
Great content! just go a bit more in detail!!
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Very splendid work on video!