Digital Diary: 2021: A

 Digital Diary: 2021: A 

04 July, 2021 

001) In physics, spacetime is any mathematical model which fuses the three dimensions of space and the one dimension of time into a single four-dimensional manifold. 

 Spacetime diagrams can be used to visualize relativistic effects, such as why different observers perceive differently where and when events occur.

Until the 20th century, it was assumed that the three-dimensional geometry of the universe (its spatial expression in terms of coordinates, distances, and directions) was independent of one-dimensional time. 

The famous physicist Albert Einstein helped develop the idea of space-time as part of his theory of relativity.

 In 1905, Albert Einstein based a work on special relativity on two postulates:

The laws of physics are invariant (i.e., identical) in all inertial systems (i.e., non-accelerating frames of reference)

The speed of light in a vacuum is the same for all observers, regardless of the motion of the light source.

https://en.wikipedia.org/wiki/Spacetime 

002) Electrodynamics is the branch of physics which deals with rapidly changing electric and magnetic fields.

003) The electroweak interaction is a fundamental force representing unification of the electromagnetic and weak nuclear interactions. The work of three physicists, Glashow, Weinberg, and Salam, showed that the electromagnetic and weak nuclear forces can be understood as a single interaction. 

004) What are 4 fundamental forces?

Fundamental force, also called fundamental interaction, in physics, any of the four basic forces—gravitational, electromagnetic, strong, and weak—that govern how objects or particles interact and how certain particles decay. 

005) Specific kinds of bosons are responsible for the weak force, electromagnetic force and strong force. 

006) Vacuum tube, Semiconductor memory , Solid-state relay, Solid-state electronics, Semiconductor industry, Metalloid, 

12 July, 2021 

007)  Space-time, Geodesic, Hendrik Antoon Lorentz - Dutch physicist, Minkowski universe, J. Robert Oppenheimer, Karl Schwarzschild - German astronomer, 

30 Aug-2021

008) Harald Fritzsch (born 10 February 1943 in Zwickau, Germany) is a German theoretical physicist known for his contributions to the theory of quarks, the development of Quantum Chromodynamics and the great unification of the standard model of particle physics.

B) quantum chromodynamics (QCD), in physics, the theory that describes the action of the strong force. QCD was constructed in analogy to quantum electrodynamics (QED), the quantum field theory of the electromagnetic force. In QED the electromagnetic interactions of charged particles are described through the emission and subsequent absorption of massless photons, best known as the “particles” of light; such interactions are not possible between uncharged, electrically neutral particles. The photon is described in QED as the “force-carrier” particle that mediates or transmits the electromagnetic force. 

C) In theoretical physics, quantum chromodynamics (QCD) is the theory of the strong interaction between quarks and gluons, the fundamental particles that make up composite hadrons such as the proton, neutron and pion. 

D) Physicist Murray Gell-Mann coined the word quark in its present sense. 

E) The force between quarks is known as the colour force[6] (or color force[7]) or strong interaction, and is responsible for the nuclear force. 

F) A quark  is a type of elementary particle and a fundamental constituent of matter. Quarks combine to form composite particles called hadrons, the most stable of which are protons and neutrons, the components of atomic nuclei.

G) With the invention of bubble chambers and spark chambers in the 1950s, experimental particle physics discovered a large and ever-growing number of particles called hadrons. 

H) In particle physics, a hadron /ˈhædrɒn/ (About this soundlisten) (Greek: ἁδρός, hadrós; "stout, thick") is a composite subatomic particle made of two or more quarks held together by the strong interaction.

I) 

27 Sep-2021 

A) Space cycle makes artificial gravity 

21 Nov-2021 

What have we worked on recently?

• Gutenberg is a new block-level editor with clean abstractions for users, too, not just developers.
• Jetpack is a plugin that brings cloud-scale features to self-hosted sites and our latest addition is Rewind, think git for WordPress sites.
• WooCommerce is the most popular e-commerce platform on the web.
• To view more of our recent work, check out our longer product list on Automattic.com.

Gutenberg:  Welcome to the block editor

1) In the WordPress editor, each paragraph, image, or video is presented as a distinct “block” of content.

2) Each block comes with its own set of controls for changing things like color, width, and alignment. These will show and hide automatically when you have a block selected. 

3) All of the blocks available to you live in the block library. You’ll find it wherever you see the  icon. 

4) New to the block editor? Want to learn more about using it? Here's a detailed guide. 

  

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WordPress latest version stands at 5.7. 2. It was released in May of 2021 and it was a so-called security release.

The WordPress core development team builds WordPress! Follow this site for general updates, status reports, and the occasional code debate. There’s lots of ways to contribute: ... https://make.wordpress.org/core/5-0/ 

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physics