M. Sadaf

41 Questions 107 Answers 0 Followers

Questions related from M. Sadaf

Can we use infrared-transmitting materials like silicon to dissipate heat energy from exhaust gases through radiation?

Can we use infrared-transmitting materials like silicon (on upward-facing hemisphere of exhaust pipes) to dissipate heat energy from exhaust gases discharged from Generators, vehicles etc,...

08 August 2019 9,887 11 View

To include a numerical or drawing for publication in my book, is it enough to mention it's source (bibliography) or copyright required?

To include a numerical or drawing for publication in my book, is it enough to mention it's source (bibliography) or copyright has to be obtained? There are certain free e-books. What about them?...

02 February 2019 5,682 2 View

I believe TIME was BORN after Energy; and Absolute Entropy of the universe came into existence together with TIME (T=0). What you say?

I believe, Energy is, what existed before the existence of time. The laws like conservation of Energy were imposed on the eternal Energy by nature/ God. Then some part of it got condensed into...

06 June 2017 8,815 8 View

Could anyone please suggest research paper/ reference for aqueous Ethanol's Chemical properties please?

I am looking specifically for E10 or E15. But any reference about corrosive nature of aqueous Ethanol would be helpful.

03 March 2017 5,747 1 View

How are racists different from patriots?

A blind patriot may be another racist in the making.

01 January 2017 7,467 0 View

How would two immiscible liquids interact when pushed back to back (without any separation)in the pipeline under turbulent flow (Re=100000)?

Pushed at Re=100000 & pipeline pressure around 50 bar.

01 January 2017 4,517 1 View

What is the speed of thoughts / maxm. frequency of human nervous system?

what is the minimum time lapsed in generation of any new idea?

05 May 2016 7,751 3 View

Would GPS work under a steel pipeline buried 2m under soil?

I have researched, & so far found that GPS device needs the view of satellite, open sky to work properly. But, I'm confused because one of the MNCs claim to have built a system having GPS that...

01 January 2016 3,391 8 View

Would gasoline vapour rich air at ambient temperature when passed through a heat exchanger (water cooled) result in condensation of gasoline vapours?

The heat exchanger is immersed in chilled water & gasoline vapor containing air is circulated through it at atmospheric pressure.

12 December 2015 3,672 5 View

Is there a non-inflammable/non-volatile solvent for gasoline vapours?

a chemical that disintegrates or precipitates gasoline would also be acceptable. What about Moya Oil?

11 November 2015 2,904 2 View

I need to store the data (speed Vs time) of an speedometer in a data logger. Possible?

I need to store the data (speed Vs time) of an speedometer in a data logger. And then retrieve the data on computer to see the graph

06 June 2015 6,758 1 View

I need to know if the conventional 'Data Logger' can record any data like temperature veocity & distance?

we are having Data Loggers for recording 'Cathodic Protection' units(voltage on time axis)?

05 May 2015 1,486 0 View

If I bury a GPS device inside soil & extend its antenna (by a metal wire) through the soil out to open field, would the GPS receive signal?

Also, can we connect the transmitter & receiver of a GPS device/ cellphone to a common antenna?

05 May 2015 4,008 5 View

What kind of a flow could we expect in petroleum pipelines, streamlined or channel-like(due to high volatility)?

I want to know whether we can use Bernoulli's equation in the case of pressurized (above 5 bar) pipelines of gasoline.

11 November 2014 783 7 View

Publishing an extension of research paper

I had recently published a research paper in a journal that had taken a copyright transfer from me in writing. Now I have to publish a richer & refined version of the same work (but it will be...

08 August 2014 9,137 2 View

Which is the most fundamental law of the universe?

I believe its the 2nd law of thermodynamics i.e. the entropy of the universe is BOUND TO INCREASE. Doesn't it mean that future is not open, rather all the physical laws are under the influence of...

08 August 2014 5,271 5 View

What should be the nature of flow in a say 12" Gasoline pipelines, whether streamline or channel like (partly filled by vapours)?

A researcher advised me that the flow in a packed (pressurized) gasoline pipeline won't be streamlined but like channel flow, to which I partly agree

07 July 2014 5,935 8 View

Why are some materials transparent?

What is the reason when talking of atomic level physics involved in a substance being transparent?

07 July 2014 3,230 0 View

I have to design an underground tank. what is the better shape.Bullet or drum?

the dia. is around 2m & length around 6 m.

07 July 2014 229 5 View

What is the minimum required configuration of a computer to run a CFD program in Fortran 77?

Can regular PCs with say Intel Corei3 processors with 4GB RAM serve the purpose?

06 June 2014 1,047 5 View

Any inputs on application of 'ON PSP (Pipe-to-soil potential) data' for detecting pilferage/leak location in C.P. protected underground pipelines?

The idea is discussed in the paper. Oil sector researchers may kindly review and give feedback.

06 June 2014 2,616 5 View

Is there a correspondence between probability of an event & actual outcome?

For example, it has been determined through actually tossing a coin many thousands of times that the event of getting a head or a tail is equally likely. But, if you consider it scientifically,...

06 June 2014 7,613 25 View

How do some aircrafts escape the attention of radars?

Is it due to their surface geometry or material or speed?

06 June 2014 6,691 0 View

Is it possible to get a steel surface polished so that it gets as smooth as a glass surface?

Can a steel surface ever be made as smooth as glass?

06 June 2014 5,403 2 View

Can the relative roughness of a pipe (pigged) be less than 0.00001 (smooth as per Moody's chart)?

I am getting the friction factor = .016 for Re=123000 for a pipe (50 years old, Pigged regularly)

06 June 2014 203 11 View

What is the nature of total(net) energy of the universe? Is it positive or zero?

It is being told that the ENTROPY of the universe is increasing that means the energy (potential) must be decreasing. But what happens to the TOTAL energy? If by any means we could collect all...

06 June 2014 1,497 2 View

Can anybody provide me a copy of Moody's chart for surface roughness calculations of an old pipeline? Would it be accurate for Re<100000?

The petroleum pipeline has grade API 5LX & is 50 years old.

06 June 2014 4,042 20 View

How to test my heavy overhead crane at 6.25 tons load without the facility for this much loading?

Can the concept of noting DEFLECTION of, say, the middle point of the crane structure under variable loads say up to 2 tons(that is available with us) be used for depicting the deflection at 6.25...

06 June 2014 3,839 4 View

What is the scope for Shale oil as a substitute to Petroleum?

what are the limitations?

06 June 2014 8,369 0 View

Is it possible (theoretically) to form an equation (as a function of space and time) that depicts the future?

If yes then what is better? i) to have constant functions (specific to each person, thing that exists) governed by all the fundamental physical variables of the universe affecting it or ii) to...

06 June 2014 2,564 5 View

Does Negative Energy exist?

Can anybody explain please?

05 May 2014 8,925 4 View

What are the practical problems with low height flights apart from convection currents?

Why don't we have low flying vehicles like 'Drone' even for single passenger? Can we make use of Diffusers/Nozzles in combination with SERVO-Motor operated blowers to attain sufficient LIFT?

05 May 2014 3,173 8 View

How close can a moving body reach to the speed of light 'c' ? Has any heavenly/ celestial boby been noticed to move close to 'c'?

How close has Man-made vehicles reached to 'c' so far?

05 May 2014 426 4 View

Can the permanent half cells (used with C.P. systems, data logger etc.) provide some current (a few mA) and for how long?

I am using a permanent half cell in my project, generally used for voltage data logging.

04 April 2014 5,339 4 View

I need to build a setup for generating a dense magnetic field and would like to know if an assembly of solenoids is a good option?

I am working on the concept of 'force on a current carrying conductor in magnetic field' for which I need to generate approx. 1-D magnetic field. Would an assembly of solenoids be a good option or...

04 April 2014 5,102 5 View

Surface roughness of old pipelines involving PIGGING operation (scratching with metallic wires) - any thoughts?

During the research (attached herewith), theoretical calculations suggest that the 60 years old pipeline (API-5LX46) that has been PIGGED (a process of passing an instrument with Mild Steel...

04 April 2014 3,466 17 View

Can anyone help with my proposal for aerial surveillance of underground petroleum pipelines?

This suggestion was rejected by reviewers of my company. I believe there are some legal/licensing complications involved in using the scheme. I had proposed aerial surveillance of underground...

04 April 2014 354 1 View

Can anybody explain the existence of Destiny?

Logical analysis

04 April 2014 3,332 8 View

A pressurized pipeline (no flow) having diameter = 12 in. undergoes a pressure drop from 30 to 19 kg/sq.cm. What is the quantity of fluid leaked?

The leak is in the direction perpendicular to the pipeline axis through a clamp with diameter much smaller(say 1 in.) than the pipeline.Sp. Gr. Of fluid = 0.80

04 April 2014 4,330 8 View

What causes the elements of universe to follow various laws?

For example : Newton's laws of motion, Energy conservation, Kepler's law of planetary motion etc.

04 April 2014 1,909 0 View

Can anybody explain the law of reflection of light (the angle of incidence is equal to angle of reflection) on atomic level?

How does the light waves/photons interact with the atoms on the reflecting surface to ensure that the angle of incidence = angle of reflection?

04 April 2014 7,052 4 View