# Sriman Dutta

Senior Members

623

+1 Endy
2. ## Squares and Cubes

Hi, Can anybody find two numbers such that the difference between their squares is a cube and the difference between their cubes is a square ? :-)
3. ## 3s to make 31

Hi, Can anyone use five 3s to get 31 ?
4. ## quantum cryptography :)

If you want to learn quantum cryptography deeply you should first understand quantum physics.
5. ## Turbulence

Cagitation can be dealt with by the Rayleigh-Plesset equation.
6. ## Sriman Dutta

I'm on a trip.....

Thanks....
8. ## Is the observer in motion or not?

Hello everyone, Suppose there is an observer standing on a body A and there is another body B at a distance. Now this observer sees that B is coming closer towards him. From this observation, can he conclude that whether A is moving towards B or B is moving towards A ?
9. ## Turbulence

I understand that in turbulent flow, the momentum is converted into thermal energy due to vigorous movements (at the Kolmogorov scale) . But this thermal energy can raise the fluid's temperature. The increase in temperature ( if sufficient) can make the fluid vaporize. So there happens to be a loss in volume of fluid. ( it can happen only if the bp of the fluid is quite low/ the atmospheric pressure is low) . So doesn't this change the physical systems of the fluid, especially at the microscopic scale?
10. ## Proving angles are equal in i triangle in a circle.

Do you know the intersecting chord and tangent properties of circle? Hint : ang. TAB is bisected by AC. And in a circle the angle between the tangent and a chord is equal to the angle at the remaining segment.
11. ## Help in explaining formula of Kinetic Energy

Bryce never think that you are intellectually poor. Keep learning and strive forward.....
12. ## How many equations

It has 3 equations. The first equation is the two point form of line equation in 2D coordinate system.
13. ## Turbulence

Kolmogorov suggests that the turbulence is caused due to movements of Eddie currents on a very small scale, the Kolmogorov scale. These eddies react vigorously to generate a chaotic flow. Am I correct?
14. ## Help in explaining formula of Kinetic Energy

Hi Bryce, I personally highly appreciate your participation in the discussion. But I think your formula is different from the OP. The others may clarify it. And a warm WELCOME To SFN.
15. ## Anti-gravity as described by Al Bielek

Removal of pressure means antigravity! Do you understand that gravity is present only because of atmospheric pressure?
16. ## Help in explaining formula of Kinetic Energy

Bryce, your reply shows the equation S=ut+1/2at^2 .
17. ## Turbulence

I see. Thanks for your help sethoflagos. My last question - can the Navier-Stokes equation ( that describes the flow of a compressible fluid) be modified to get a general equation for the system of turbulence? Or, do we need to interpret turbulence as a flow that uses more energy than required by laminar flow for covering a given length of pipe ? (considering that we have turbulence within the pipe) Sorry if my questions are a bit impractical. I am a novice in this area.
18. ## Turbulence

You all mean that laminar flow can be considered as rotational by defining vorticity. So, turbulence is something that is too chaotic to be described by Couette flow.
19. ## Is this a thing?

:wacko:May be it comes from narcissism. People tend to think that they know everything and post it..... It may be wrong.
20. ## New universe? (split from could the universe have a center)

https://en.wikipedia.org/wiki/Multiverse It's much like the multiverse concept.
21. ## integration

Hi mark, x=ln y/ln x only if y=x^x . Besides, if we want to find the value of x, then how can x be in right hand side?

With that, I add that you should also learn the derivatives of trigonometric functions.
23. ## Do you believe the death penalty is unethical?

This thread is like the story of 'The Bet' by Anton P. Chekov.
24. ## Turbulence

I would like to know the mathematical methods you are talking about.
25. ## Turbulence

Hi everybody, Turbulence is a still a complex unsolved topic in mathematics. According to Wikipedia, turbulence is one of those unexplained problems in physics, "Is it possible to make a theoretical model to describe the behavior of a turbulent flow — in particular, its internal structures?". Turbulence includes complex vortices of fluid flow. Analyzing it properly is still not possible. Is there a way out? Can we create a new theory of turbulence? Now, my real question is: Laminar flow is thought to be composed of multiple plates that flows along with a flow velocity v in the direction of flow. This hypothesis is of Couette flow. Since turbulence involves a lot of chaotic processes, can we regard it as the result of disintegration of the so-called parallel hypothesized plates in a laminar flow? Please excuse me if my topic of discussion seems impractical.
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