Wednesday, November 25, 2015

How can I measure Static and Dynamic pressure?

How to measure static dynamic and total pressure on a flowing fluid?
Watch this video for the basic explanation on pressure measurement of fluid flowing in a pipe.


https://www.youtube.com/watch?v=qkIe6zKdYFk

What is the difference between Static and Dynamic pressure?

We studied Total pressure dynamic pressure and static pressure in fluid mechanics. All these concept
were introduced with  Bernoulli's equation. Let us understand them in physical sense.


Watch the video for complete explanation of these terms.

   https://www.youtube.com/watch?v=cz0Qd68_d_w

Wrong Notion Of Rising Intolerance

I am not writing this post today to increase views on my blog or to cause some uprising instead I am writing today because I feel a great urge to write something on the topic because I feel I have voted for the government and have full democratic rights to express my opinion.

After the actor Mr. Amir Khan expressed his opinion about rising intolerance in India there has been an upheaval in heated comments. there are people supporting him for keeping his opinion and there are people who are against his opinion. I am concerned more about What would have happened if nobody had reacted on it? I think it would have gone two ways. Either Mr. Amir khan would make comments on intolerance in many other interviews on rising intolerance or he would stop talking about it ultimately. what encouraged me to write is not his comment on growing intolerance as he was invited there to speak on it since the interview was  based on that but his statement that it has been growing since the last 6-7 months force me to write today.

First Let me clear the notion behind heated debate. The main reason behind having a debate on rising intolerance were two events which occurred recently. One was the "Dadri case" where a man is murdered by a mob for eating beef. The other was sacrifice of a colonel  fighting terrorist in Kashmir. I feel the first event has more effect in creating heated debates than the later. And this could be understood in a very simple pattern. There is a famous saying "jab tak khud pe na bete tb tk samaj nahi aega"; "until you are a part of an unfortunate event you won't be able to feel the real pain". It is true and it is a human behavior where we often show sympathy in place of empathy. What happened in Dadri alarmed us that incident as such could happen to us or in the secure places, secured from the terrorist boundaries, while soldiers still die everyday on the borders saving country and countrymen. The sacrifice of soldiers doesn't alarm us instead it make us feel sad about the incident for a day or two and then our life continues.But if a person is killed in our neighborhood for keeping beef  by some 7-8 cowards we are alarmed more than being sad.

Do we really think a ruling party has an affect on all bad events happening in the country. Incidents like this have been from decades and the root cause behind that is sick or negative mentality. There are people in all section of society who cultivate this sick mentality because they feel vulnerable to speak out in open and this cause that mentality to grow within them like a virus which come out as their violent actions. After the BJP government came in power there are two opinions. One comes from an educated mass which forms 90% of voting community and one comes from rest 10% who are either unaware of the facts due to illiteracy or are stubborn about their wrong opinions which they are taught by their grandfather or which have been a part of there family hierarchical system for long. 90% of the educated mass which consist of people from every community within the country will see the positives they expected out of the government like "Clean India initiative, Make in India, Improved railway food. road constructed per day, Jandhan Yojna, Increasing foreign investment, Improve image of India in the world platform. The other 10% will find loopholes and they definitely will as nothing is perfect. and after finding them they will develop a negative mentality for "kuch nahi ho sakta is desh ka" and cry about things for the next 5 years and the years after. I would like to be part of the 90% masses and focus on country's development rather then making political remarks on communal disharmony and preventing government to make reforms.

I think what Amir khan said was more of "innocent remark" than being an intelligent answer. He is a public figure invited to talk in front of an elite personnel. He might have not framed his answer but he didn't focus on the question much and gave a childish answer. I am no one judging him for his remarks but giving my opinion as he gave his on rising intolerance. And I feel the debate should be on the root cause of intolerance that is the sick mentality rather than making comments on what Mr.Amir khan has said. Aam Admi Party leader Mr. Arvind Kejriwal supported Mr.Amir Khan by posting his letter on Facebook, Twitter etc, and like always tried to revenge BJP or I should say Mr.Modi by comfortably hiding behind his self proclaimed image of honest and humble. I support Mr Kejriwal for his anti corruption policies but I find him hilarious when he come to Facebook whenever he finds something against Mr.Modi. It reminds me of my childhood days "papa papa ye mujhe khelne nahi de rha". 

At the end I will make only one point; we need to get over portraying Mr.Modi as "Hindu Neta" and stop being so obsessed with him that we forget that there is a nation to serve.

"Jai Hind"   


 

Friday, November 1, 2013

FRIENDS


Friends are precious

I came across a moment when I realize how wonderful and lovely friends I got. I have learned things from my friends; things which can neither be explained nor can be mentioned in few literature words. They taught me to live with pride. They taught me to live each moment, they taught me hard work, they taught me kindness, they taught me to love each other, they taught me to share things, they taught me modern living, taught me high thinking, taught me to respect parents I thank god for giving me such precious and wonderful friends.

I write this article today because I recall something one of my friends told me. I am moved by the saying he told me from "Shree Bhagavad Gita". I have never red it but when my friend told me one of the main essence of "Shree Bhagavad Gita" I was greatly convinced and influenced by the line. There is this saying in "Shree Bhagavad Gita" that “Kismat se jyada aur mehnat se kam kisi ko nahe milta” it means nobody gets more than his fate and less than his work”. This can be explained by an example a rickshaw driver spent more energy than an employee at an IT firm but still he earns less than him and the reason is his fate.

The above line has a practical meaning and it is not just a mere saying. One can observe and look for it around oneself. But this doesn't mean one should stop hard working or wait for one's lucky dies roll a full house.

It means if you are blessed than use it for best, make full use of your earnings , understand the value of money , understand the value of time , live each moment , share your happiness, listen others sorrow, help needy and poor, try not to sympathize but empathize. God has blessed you so you deserve to live your life but it doesn't mean you neglect society. One should be aware and helpful for the society. I will now pray to god that he give me strength to follow all above and make me contribute to society.

PRACTICAL EDUCATION


EDUCATION SHOULD BE MORE PRACTICAL

2+2=4, 2*3=6 these are the basic problems which always have same output whatever the standard of a student is. Almost everyone knows the output value but the basic concept involved behind it is known to those above 2nd or 3rd standard. The reason being the way the input or data is taken into account. For e.g take an operation 103. Now as according to our mind set it will give an output 1000, but the reason behind it or the operations involved in between were not considered since when we see the question it was so familiar and easily interpret that our mind gave response in a nanosecond. But when the problem become complex or in the same question above numerical value of the question gets changed we take more time to find the solution and some people might get stuck I the calculation, the reason being that the basic operations involved in between are known to few.

Now the above problem can be broken into two parts. For 103 we may write as 10*10*10, now it means 10*10(1st operation) or adding 10 ten times which would give 100 then the problem becomes 100*10, means 100 is to be added 10 times which gives the output 1000(2nd operation).

By the above example the thought I want to project is that if things are done practically they are clearer and useful. But the present education in India is not based on proofs and concepts, instead it focus on theoretical knowledge. Practical education should be the main preference of any education system. The main reason students didn’t enjoy the subjects is that they are loaded with lot of theoretical matter and their proofs are not made clear to them. If any topic is explained with practical usage and proof then it would be firmly cemented in a student’s brain, which would finally lead a student to bring out new thoughts and thus many new useful results can be generated
.
 Einstein was not born with theories of space and time, neither he had any special abilities, what the great man did is followed his vision and understand the basics and concepts well. MIT is a very good example of an institute which foster practical knowledge along with theoretical concepts, classrooms are so designed that theories and results are explained through live demonstrations. Such enthusiastic environment is necessary for good results. Thus conclusion is more attention is needed by Indian government and private organizations to develop and modernize the classrooms environment to make it more practical and informative.