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@Reza
Khan Asfi Reza

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Einstein
@Einstein | 25min

Torque

In physics and mechanics, torque is the rotational equivalent of linear force. It is also referred to as the moment, moment of force, rotational force or turning effect, depending on the field of study. The concept originated with the studies by Archimedes of the usage of levers. Just as a linear force is a push or a pull, a torque can be thought of as a twist to an object around a specific axis. Another definition of torque is the product of the magnitude of the force and the perpendicular distance of the line of action of a force from the axis of rotation. The symbol for torque is τ, the lowercase Greek letter tau. When being referred to as moment of force, it is commonly denoted by M.

In three dimensions, the torque is a pseudovector; for point particles, it is given by the cross product of the position vector (distance vector) and the force vector. The magnitude of torque of a rigid body depends on three quantities: the force applied, the lever arm vector connecting the point about which the torque is being measured to the point of force application, and the angle between the force and lever arm vectors. In symbols:

Torque = | R || F | sin(x)

Professor Dave
@Professor Dave | 20min

Second Derivative

In calculus, the second derivative, or the second order derivative, of a function f is the derivative of the derivative of f. Roughly speaking, the second derivative measures how the rate of change of a quantity is itself changing; for example, the second derivative of the position of an object with respect to time is the instantaneous acceleration of the object, or the rate at which the velocity of the object is changing with respect to time. In Leibniz notation:

where a is acceleration, v is velocity, t is time, x is position, and d is the instantaneous "delta" or change. The last expression is the second derivative of position (x) with respect to time. On the graph of a function, the second derivative corresponds to the curvature or concavity of the graph. The graph of a function with a positive second derivative is upwardly concave, while the graph of a function with a

Khan Asfi Reza
@khanasfireza | 1min

So you think you should stop using React? Here’s why you’re wrong

React was created and open-sourced in 2013 by Facebook based upon the idea of having a JavaScript library for building web applications. Since then, it has grown significantly.
But now, the competition has changed significantly, thanks to the introduction of new libraries or versions of Angular, Vue, and others — which raises the question: should we still build products with React in 2021?
Personally, I believe that React has a great future, and that you should start (or continue using) it in your projects. Here’s why.

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Svelte
@svelte | 1min

Svelte Framework

Svelte is one of the fastest-growing web development frameworks, and SvelteKit is Svelte's web app development framework. In this tutorial, you'll learn how to build and launch a website from scratch with Svelte and SvelteKit.
But, head's up! SvelteKit is in beta, so it still has lots of bugs, and many of these steps are likely to change.
You can see the final code for this project on GitHub, and the final project live on Netlify.

What is Svelte?
Svelte is a JavaScript framework for creating web apps. Whereas other frameworks like React and Vue.js generally add code to your web app to make it work in the user's browser, Svelte compiles the code that you write when you build your app. In doing so, it creates very small files and fast websites.

<script>
let name = "world";
</script>
<h1> Hello , {name} </h1>

Svelte looks like HTML, with <script> and <style> tags included, but it also adds syntax to make your HTML dynamic, inside curly braces. All of this code gets transformed into vanilla HTML, CSS, and JavaScript with Svelte's compiler.

What is SvelteKit?

Currently, the most popular application framework for Svelte is Sapper. SvelteKit is the new official framework developed by Svelte, superseding Sapper as Svelte's go-to framework. It adds key features like routing, layouts, and state management to Svelte.
SvelteKit allows you to make static sites, server-rendered sites, and even hybrid static-and-server-rendered web apps. It also has extremely fast hot reloading in development mode because of the way it bundles JavaScript.

Django
@django | 25min

Django is the best framework for web applications, as it allows developers to use modules for faster development. As a developer, you can make use of these modules to create apps, websites from an existing source. It speeds up the development process greatly, as you do not have to code everything from scratch.
Using Django, you can create professional web apps and websites in a short window. The platform is known for its advanced functionality like admin panels, authentication support, comment boxes, file upload support, contact forms, app management, and more.
There is a large collection of modules that you can use for Django website development projects. It is among the best framework for web development, according to developers in the community due to its simplicity and rich pool of features.
Since Django is written in pure Python, it was originally built around the Model View Controller (MVC) framework. The concept is still applicable in the current version of the framework, as well. But when it comes to Django, developers usually refer to the architecture of Django as Model View Template (MVT). Three distinct layers are responsible for supporting the architecture, and they can be used separately in Python Django framework.

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