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Just out of curiosity:-

One thing I don't understand is that the human brain is very complex, & very hard to understand but very easy to manipulate thoughts why?

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CuriousSaucy

LTIMindtree

11 days ago

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EvilVogue1

BlackRock

11 days ago

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WolfgangMozart

Stealth

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Quizshow

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VICKy

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EvilVogue1

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CluelessMover

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11 days ago

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Misc on

by purushpsm147

OpenText

Are we living in a Simulation?

So I had an interesting epiphany recently. I have been pondering upon the possibility of UFOs and Aliens, and questions like Are we alone? One thought crossed my mind was what if Alien life is not in the same dimension as we live in? Like we observe the world in a 3d dimension of space and 1d dimension of time, but we have other creatures like Bacteria and viruses who see the world differently than we do. From there perspective the world is likely 2d space. I wondered if alien life exists in 4d or higher dimensions and they observe us as we observe bacteria. Now the possibility the the entire universe is a Simulation is not new for Science. Scientist estimate that there is 20 percent possibility that we live in a Simulation. Now I started wondering what would be the consequences of living in a world with higher dimensions let's say a 4d world. How would forces of nature and physics work there. Well I did some research on the internet and found quite few shocking results. Like Gravity would be very Weak, magnesium will be noble gas, tying a knot would be impossible. A higher dimensional being could meddle with our organs like we can draw dots inside a circle without ever crossing circumference. A higher dimensional being could easily interfere with our world. He can see through our world, he can easily cover huge distance almost instantly. Now I thought sounds familiar 🤔. Our mythology is filled with such episodes. Devas can fly as if gravity doesn't impacts them, It was difficult for Yashoda to tie Krishna with a rope knot. Basically god's can appear instantly anywhere in the universe. There's also a verse in Mahabharat where Shantanu asks Devdut how was his time in the Devlok, to which he replied that God's see the human world differently, and human would to them is like a game of Chausar. (Like a video game or simulation). Also, Hindu religion ofter describes Sansar as Maya or manifestation by God. Nothing is real. Ngl, Goosebumps

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Misc on

by salt

Gojek

[Thread] What is your favourite math equation?

TLDR: I was reading up on the Navier Stokes equations today and it is so elegant that it might be my favourite math equation. Equation 1: ∇u = 0 (conservation of mass) states that the divergence of the velocity vector u is zero, meaning there is no net change in fluid mass. Equation 2: ρ Du/Dt = -∇p + μ∇^2 u + ρF (conservation of momentum) expresses Newton's second law for fluid flow. It balances the acceleration of fluid particles (LHS) with internal forces (pressure and viscosity) and external forces (gravity or other external influences) on the RHS. This equation is foundational for modelling various fluid dynamics scenarios, from celestial bodies like stars and galaxies to F1 cars. Long Version: Here's how it works: Equation 1: ∇u = 0 (conservation of mass) So, u is velocity that can be represented as (u,v,w) vector, where u,v,w are x,y,z components of the vector. ∇u tells us that we need to do a partial derivative on u. So, ∇u = ∂u/∂x + ∂v/∂y + ∂w/∂z = 0 or, the partial derivative of every component wrt corresponding direction is 0. Equation 2: ρ Du/Dt = -∇p + μ∇^2 u + ρ F (conservation of momentum) LHS: Since, u is velocity, then Du/Dt is acceleration and ρ is density. Newton's second law, F = m x a, applies here. Wherein, Du/Dt is acceleration of fluid particles and m is the density of the fluid. RHS: -∇p + μ∇^2 are the internal forces of particles hitting into each other while F represents the external force. F in most cases is gravity, so one can replace it with g. However, if you put in electromagnetism then, you can combine Navier-Stokes with Maxwell's equations. This has over time led to the development of magnetohydrodynamics, ie how stars and galaxies form. You can model the growth of our sun with this. ∇p is our pressure gradient and represents the change in pressure. Essentially, fluids move from high pressure to low pressure. μ∇^2 represents viscous forces yielding from viscosity. Imagine this can model aerodynamics of F1 cars.

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