Inertia - Science for You

ALBERT EINSTEIN'S BIGGEST BLUNDER Even the great physicist Albert Einstein made an utter foolishness? (He did!) But, the biggest quality of a scientist is to admit his mistakes, right? Pic credits: Ugur Peker, Unsplash THE COSMOLOGICAL CONSTANT When you hear the term, what's your primary guess on that? It's something related to cosmology? Okay, it's something regarding cosmology. It's a constant? Well, again yes, it is a constant; an Albert Einstein Constant. It comes in Einstein law? Uh, what do you mean? Einstein Law? What is that? So, let's get to it. THE THEORY OF RELATIVITY What is the theory of relativity? Everything is relative to one another. There is this Special Theory of Relativity which is regarding the elementary particles and their interactions and the General Theory of Relativity which is regarding the laws of gravitation and the other forces of the universe. The postulates of the Special Theory are: 1.The laws of physic...

Hubble's Law - sounds interesting and elegant. But, then what's wrong with it? Well, that's not a law. THE HUBBLE'S LAW " All objects move from each other and the apparent relative velocity is proportional to distance . "   That is the Hubble's Law. Mathematically, Ｖ=ℍ₀ D  This  ℍ₀ is the Hubble's Constant - which is in fact, a non-constant constant. The value changes with time, and the precise value had been a matter of debate for nearly one century. Currently, as per March 2019 the Planck Mission shows the value to be 74.03±1.42% using Hubble Space Telescope observations. The Hubble's Law serves a strong evidence for the big bang theory. Don't know much about the BIG-B ? We'll post an update soon. Hubble and his Assumptions The Hubble's Law serves a basis for most of the modern cosmological concepts and views. But, even this foundational law makes many philosophical assumptions, especially on the unif...

BOROPHENE In the last update, I had mentioned about borophene, and now we are here to talk about it. Overview Borophene is the crystalline atomic monolayer of boron. It is a two-dimensional allotrope having a metallic electronic structure and conducts electricity. they have strong covalent two-centre-two-electron bonds and stable electron-deficient multi-centre-two-electron-bonds.  Synthesis *Deposition of elemental boron on a silver (Ag 111) surface under ultra-high vacuum conditions. *Or we have the technique of letting Boron diffuse into Au(111) substrates at high temperatures. It then segregates to the surface and forms borophene islands as it cools. Comparison: Graphene v/s Borophene *More light-weighted than graphene *High flexibility (or rather "record high") *Higher ideal strength than graphene *Higher stiffness to weight ratio than graphene *Superconducivity *Borophene is a better option  for Li ion battery compared to graphene....