Web3

👉 What is Web3?

- Web3 is an idea for a new iteration of the World Wide Web which incorporates concepts such as decentralization, blockchain technologies, and token-based economics.

- Centralization has helped onboard billions of people to the World Wide Web and created the stable, robust infrastructure on which it lives. At the same time, a handful of centralized entities have a stronghold on large swathes of the World Wide Web, unilaterally deciding what should and should not be allowed.

- Web3 is the answer to this dilemma. Instead of a Web monopolized by large technology companies, Web3 embraces decentralization and is being built, operated, and owned by its users. Web3 puts power in the hands of individuals rather than corporations.

👉 What are the core ideas of Web3?

- Web3 is decentralized: instead of large swathes of the internet controlled and owned by centralized entities, ownership gets distributed amongst its builders and users.

- Web3 is permissionless: everyone has equal access to participate in Web3, and no one gets excluded.

- Web3 has native payments: it uses cryptocurrency for spending and sending money online instead of relying on the outdated infrastructure of banks and payment processors.

- Web3 is trustless: it operates using incentives and economic mechanisms instead of relying on trusted third-parties.

👉 Why is Web3 important?

- Ownership: Web3 allows for direct ownership through non-fungible tokens (NFTs). No one, not even the game's creators, has the power to take away your ownership. And, if you stop playing, you can sell or trade your in-game items on open markets and recoup their value.

- Censorship resistance: On Web3, your data lives on the blockchain. When you decide to leave a platform, you can take your reputation with you, plugging it into another interface that more clearly aligns with your values. Web 2.0 requires content creators to trust platforms not to change the rules, but censorship resistance is a native feature of a Web3 platform.

- Identity: it solves this problem by allowing you to control your digital identity with an Ethereum address and ENS profile. Using an Ethereum address provides a single login across platforms that is secure, censorship-resistant, and anonymous.

👉 What are Web3 limitations?

- Accessibility: Web3 is less likely to be utilized in less-wealthy, developing nations due to high transaction fees.

- User experience: Users must comprehend security concerns, understand complex technical documentation, and navigate unintuitive user interfaces. Wallet providers, in particular, are working to solve this, but more progress is needed before Web3 gets adopted in mass.

- Education: Web3 introduces new paradigms that require learning different mental models than the ones used in Web2.0.

- Centralized infrastructure: The Web3 ecosystem is young and quickly evolving. As a result, it currently depends mainly on centralized infrastructure (GitHub, Twitter, Discord, etc.).

👉 A decentralized future

- Web3 is a young and evolving ecosystem. Gavin Wood coined the term in 2014, but many of these ideas have only recently become a reality. In the last year alone, there has been a considerable surge in the interest in cryptocurrency, improvements to layer 2 scaling solutions, massive experiments with new forms of governance, and revolutions in digital identity.

- We are only at the beginning of creating a better Web with Web3, but as we continue to improve the infrastructure that will support it, the future of the Web looks bright.

🤓 Prepared by @abdesol

James Webb Space Telescope❤️

James Webb Space Telescope (JWST) is the largest and most powerful telescope ever made by human being. its greatly improved infrared resolution and sensitivity will allow it to view objects too old, distant, and faint for the Hubble Space Telescope. It is believed that it would help us to see how the early galaxies and stars were formed billions of years ago. It also helps to find exoplanets where life is habitable or even help us to spot where intelligent civilization lives (If they exist). JWST was launched on 25 December 2021 on an ESA Ariane 5 rocket from Kourou, French Guiana, and as of April 2022 is undergoing testing and alignment. JWST has already captured a lot of interesting images (I will post some of them later on). It is made up of 18 hexagonal, beryllium mirror segments which greatly helped it to see very distant objects possibly back to 100 million years after the big bang.
Mass: 6,161 kg
telescope type: orbiting infrared observatory
cost: 10 billion dollar
power: 2kW
mission duration: 5-10 years
Diameter of primary Mirror: 6.5 m (21.3 ft) approximately

The first full-color image taken by JWST.
This is just breathtaking!😍

The Southern Ring Nebula❤️
Here is another awesome picture by JWST.

With these Maxwell's equations light was possible🔥

It's hard to get it logically, but you can get same range of projectile on two angles!

But the condition is that the angles should be complementary.

━━━━━━━━━━━━

Physical Reason :

Range of a projectile depends on two factors, its horizontal speed and time of flight. Let's take two complementary angles 30° and 60°, in 30° projection, the time of flight is less because vertical component of velocity is less and hence horizontal velocity is larger. In 60° projection, the time of flight is larger since vertical component of velocity is larger and hence horizontal component in less.

These two factors kind of balance each other and produce same ranges on both 30° and 60°

━━━━━━━━━━━━

Mathematical Reason :

The mathematical way of understanding it is simple, expression for range is :

R = u²sin(2θ)
g

Since angle is twiced, the angles now become supplementary, i.e. from 30° and 60° to 60° and 120°. And sine of angles of θ and 180-θ is same, so the value of range will be same.

Maxwell's equations:
Their derivation
Proof
Uses
Books and videos suggestions are included in this short pdf. I hope you guys will enjoy it😊

Andromeda over the Sahara Desert😍😍

Copyright: Jordi Coy

If you have another option, comment it below.

For those who has voted for 'Physics Book Recommendation', check out this link 👇👇 I will also add another recommendation by myself.

https://noobphysics.com/the-best-books-to-learn-physics-from/

Beginner + High School level physics book recommendations
It is important to get the right background in mathematics, especially calculus, and in the foundations of physics.
Calculus:
✔️Calculus the early transcendentals by Anton, Bivens and Davis
- It is an introductory book for calculus.
- it has tons of examples and practice problems.
- tons of figures.
- so long explanations.
✔️Calculus for dummies by Mark Ryan.
- it is an outstanding book for precalculus, differentiation and integration.
- it has a moderate amount of examples.
- the explanations are so understandable.
- it is like its name any person with a basic algebra knowledge can go through it.
Physics
✔️University physics with modern physics by Young and Freedman
- it is an introductory physics textbook.
- it has long explanations.
- it has tons of examples and practice problems.
- it also consist of a little bit modern physics like relativity, quantum mechanics, particle physics, condensed matter physics and nuclear physics.
- it has wonderful explanations for especially concepts.
✔️Fundamentals of physics by Resnick and Haliday and Walker.
- it is an introductory level.
- it has a lot of figures.
- it has tons of examples and practice problems.
- it is good especially for practicing on numerous problems.

TO BE CONTINUED...😄
Coming up, I will post PDF format of these books✌️

Note: These recommendations are collected from different persons, groups, videos and websites. I'm not the one who recommended it utterly but I believe they are good.

📚Calculus the early transcendentals by Anton, Davis and Bivens
🔗24MB

📚Calculus for dummies by Mark Ryan.
🔗7MB

📚University physics with modern physics 15th edition by Young and Freedman.
🔗63MB

📚Fundamentals of physics by Resnick and Haliday.
🔗30MB