Tuesday, June 4, 2013

Two way switch

                                    Two way switch

In long corridors, when it is dark, it is difficult to see what is happening in the front. That time, two way switch come in handy.
Two way switch is having a simple circuit consisting of a bulb and two switches to operate. As the name itself says, one switch would be in one end and the other switch would be in opposite end. If we take 0 as the representation of ' OFF ' state and 1 as the representation of ' ON ' state , we cxan write the table like this---------
         
              SWITCH 1    SWITCH 2               BULB
                     0                  0                      0 ( not glowing )
                     0                  1                      1  (glow )
                     1                  0                      1   (glow)
                     1                   1                      0 ( not glowing)

Switch 1 and Switch 2 should be connected in parallel  to the bulb. This table resembles the table of EX - OR gate.
Thus by using this, we can go in a long corridor without any trouble. But we must see the condition of switch on the other side. By making correct arrangements, we can use this switch.

Monday, June 3, 2013

Its monsoon time !

                            Its monsoon time

Monsoon has entered Karnataka . Because of this , in coastal areas it is raining. I thought if it rains , monkeys will not dare to attack our coconut trees !
Just think : monkey is on the coconut tree plucking tender coconuts. Suddenly it starts raining. What should monkey do? Its on the top of tree.
Its usual method is flying from tree to another tree holding their branches. But if it rains , everything will be wet . According to me, with wet hand , it is difficult to hold anything.
But I was wrong. Monkeys have become intelligent. Now they have come to know that it wont rain continuously and it give some break in between.
Monkeys wait for this moment and they walk to our garden and then climb trees. They finish their work in just 5 minutes and they are gone afterwards.
After their departure, rain starts pouring in.
These monkeys have come to land of clever people and they too have become clever now !

What is the full name of ESPN?

                                     What is the full name of ESPN?

We all are familiar with the sports channel ESPN. But ESPN is the acronym. Basically ESPN is an American  global television network focusing on sports related programs.

ESPN = Entertainment and Sports Programming Network

ESPN is often accused of having bias towards certain teams. Reports suggest that bias may have a financial motivation.


The bill

                                                The bill

It is a city. There was a huge factory. It was manufacturing goods with the help of large machines. the daily business would be around in crores.
But one day, one important machine got spoiled. It stopped working. Because of that , no other work could be done.
Factory men are worried now. The factory is going to face a huge loss. the only solution is to repair the machine and making it to work again.
But no one had the clear idea of repair. For everyone , it seemed machine is all right. They could not make out where is the problem?
Finally , they decided to call the official repair man. They called him. He came to the city all the way from Delhi.
Factory people showed the machine to him and said that they can not find any problem. The official assured them that he will fix it.
He started inspecting the machine thoroughly. For hours, he was inspecting. Factory people began to loose hope .
Finally , official asked for a screw driver with them . With that, he tightened a screw which was loose. Presto ! machine started working.
All were surprised by knowing that it all happened just because of a screw which was loose. They thanked the official and asked for his bill.
Official nodded his head and handed over the bill to president. The bill was Rs. 10,000 ! All were shocked. Just for tightening a screw, this much money?
They started to quarrel with official saying that it is not right. Then official handed over them another bill which cleared all doubts -----
                                        BILL

Charges for tightening the screw   = 1 Re
Locating the faulty screw among all screws = Rs 9999 !

Why there is sea erosion in coastline of Karnataka?

             Why there is sea erosion in coastline of Karnataka?

Monsoon has entered Karnataka. Since 3 days , it is raining heavily in our area. Since my place comes in sea belt , it is a common problem of sea erosion here.
If we go to sea shore, we can see by ourselves what is sea erosion? Even in the news papers, they  give report with pictures.
I always wondered why sea erosion is more in our state? The scientific reason is , here the level of ground is below to that of sea. That means, sea water is in higher altitude than the ground. Thats why , if there is more rain and if sea becomes harsh, then it will find more space to grab.
Since ground level is below to that of level of sea, sea water naturally enters the ground. We can illustrate it by an overflowing water tank.
But why is this scenario? We know that Parashuram had asked with King of sea to give him land so that he can bring people . King of sea agreed and sea went behind , thus giving the land to Parashuram. Though this is a story, now I realise what is the reason.
Since the coast line was under sea , the sea level is higher to that of ground. That is the reason for sea erosion here.


Why do body joints make popping sound?

                             Why do body joints make popping sound?

It always happens. When we bend our knee joints for first time in a day , we hear popping sound. But it is always first or two times in a day.

What causes this popping sound?

The sound heard when the joint is extended almost to the end of its range. The joint surrounded by a lubricating fluid , is encased in a capsule. At times, when we extend the joint so far that the gas dissolved in the fluid , seperates from the fluid , forming a small bubble . And when this bubble cracks , the popping sound is heard.
But why only for some time of day?
The popping sound can be heard not until the fluid reabsorbs the gas .

Can the destiny be changed?

                                     Can the destiny be changed?

It was seen on sea beach.
There was a person , who was going across the beach in a hurried way . He was bending and collecting something.
An onlooker was very curious to know what is he doing?
When the onlooker came near the man , he was collecting the fishes who have come along with tides to the shore , and throwing them back to sea as fast as he can.
Onlooker could not control his laughter . He said to man " Your work is useless. The beach is so long . You can not make each and every fish to go back to sea . It is in their destiny to die like this way. Why do you want to change it? "
At that time , man replied. " I know I cant save each and every fish . But I am having a satisfaction that I was able to save the life of atleast one fish.. "

MORAL :  We can try to change our destiny instead of being hopeless.

Why is it not right to sleep on stomach?

                         Why is it not right to sleep on stomach?

It is not right to sleep on stomach as it put pressure on lungs, heart and the intestines. When we try to sleep on stomach , our shoulder position and the face has to be on one perticular side. This may harm the position of muscles at that part.
It is good to sleep on right side of body. The reason is not entirely clear. One hypothesis holds that right side sleeping relaxes the lower esophageal sphincter between stomach and esophagus. Another study tells that left side sleeping keeps the level of gastric acid above to that of stomach.
It is also advisable to sleep on back. This will ease the back pain.

Why is blood red?

                                 Why is blood red?

So, it is easier to spot !
Blood is red because of red blood cells. Their sheer number lends their red colour to the blood. As the young red blood cell matures, it takes adult form in its birth place i.e. bone marrow loses its nucleus. Then it increases the production of hemoglobin Hemoglobin is the RED PIGMENT.
When blood passes through lungs , oxygen piggybacks on hemoglobin of red blood cells. From there, the red blood cells carry the oxygen through arteries to all cells of the body. Carbon di oxide from cells gets attached to red blood cells in the same manner and then returns to lungs.
.Blood has many other components besides  red blood cells. It has white blood cells which are the part of immune system of body.

Why is a building called building when it is already been built?

      Why is a building called building when it is already been built?

A building is the result of acting of building. It is taking the verb build and making it as a noun building. Hence, we can say that here building acts as noun.
Word building can be either a noun  ( naming word ) or verb ( doing word ).
When the term ' building ' is used as in the sentence , ' she is building it ' ===Verb
When the term ' building ' is used as in sentence , ' building is huge '  ====Noun
Therefore the meaning of word ' building ' depends on context of the sentence and it can be either a verb or a noun.

Smallest loksabha constituency

                                 Smallest loksabha constituency

In Karnataka, assembly elections are over and the new government is formed. Now , the nation is gearing up for one more election : Parliament elections.
India has been divided into 543 constituencies. An independent delimitation commission determines the size of a constituency  .
Smallest constituency voter wise is Lakshadweep. It contains 27 islands and just 37,619 voters. P. M. Sayeed , a senior congress leader and deputy speaker of the 13th loksabha , has won all the elections so far.
Smallest area wise constituency is Chandni Chowk with just 10 sq. km.

Saturday, June 1, 2013

Sanjay

                                             Sanjay

I am not talking about actor Sanjay Dutt. The article is about Sanjay , who is a character in the great epic of Mahabharat.
Sanjay was the charioteer of King Dhritarashtra. Father of Sanjay was also the charioteer of Kuru Dynasty. Hence , Sanjay was brought up in the palace premises.
After the death of his father , Sanjay started serving King. He was the witness of the gambling in which Kouravas cheated Pandavas and made them to go to forest. Sanjay was unhappy with this development.
Besides Vidura , only Sanjay had the courage of telling Dhritarashtra what is right and what is not. Dhritarashtra was blind.
Once, Maharshi Vyas had come to court . That time , battle between Kouravas and Pandavas was announced.
Maharshi Vyas told Dhritarashtra that Kouravas will get defeated and also will be killed . To witness war of Mahabharat , Vyas liked to give eyes to Dhritarashtra .
But Dhritarashtra refused. So, Vyas gave special power to Sanjay , according to that Sanjay can witness the happenings of battle field from wherever he is.
Using that special power, Sanjay can describe the war scene to Dhritarashtra.
Sanjay had told about the death of Duryodhan , son of Dhritarashtra by Bhim to Dhritarashtra. Though , Dhritarashtra didnt show his emotions at that time, he was having grudge against Bhim  as Bhim killed his son., Duryodhan.
After war, when Pandavas had come to meet Dhritarashtra , Dhritarashtra wanted to hug Bhim. Krishna knew what Dhritarashtra is upto , instead of Bhim , he made an iron statue to stand infront of Dhritarashtra.
Being unaware of this, Dhritarashtra hugged the statue so tightly that statue was broken to pieces ! After that Dhritarashtra thought that he had killed Bhim and fell unconcious on the ground. Sanjay took care of Dhritarashtra and consoled him.
Sanjay spent his later life with Dhritarashtra in forest. But when Dhritarashtra , Gandhari and Kunti were engulfed by a forest fire , Dhritarashtra ordered Sanjay to leave the place. Sanjay went to Himalayas to spend his last days.