Why do we have numbness in the legs when we sit down for a long time?

 I have experienced it. After sitting on a chair for continuous 2 hours, I found it very difficult to take a step.

When we sit, we start building a pressure on our legs. This pressure can briefly compress the nerves in that area.

As a result, there will not be fluent communication between brain and the nerves of that area. 

As we know brain sends signals to our body organs through nerves. When nerves get compressed, signals from brain will not reach the organs as they should be. 

That's why we feel difficult to move as we wish. 

But it is only for some seconds. As soon as the pressure on nerves gets eased, communication between brain and organs re establish. 

What happens if some thing falls into black hole?

 We all know what are black holes in the universe. They are the remainings of a dead star in space.

Now why they are black? Black holes are having the huge gravity power such that they don't let even the light to pass through them.

If a matter absorbs all the visible light falls on it, they would look black in colour. Whereas if they reflect all the colours of visible light, they will be white in colour. 

According to Einstein theory of general relativity,  if a matter falls into the black hole,  it keeps falling down and down and down , to a central point where it literally gets crushed into a single point. 

Real things are not known to science yet. 

If would black holes allow light to pass through them, then they would be called transparent holes.  !!!! 

We can say black holes suck matters. 

Why a balloon bursts with a pop sound when pricked with a needle ?

The air in the balloon is at a higher pressure compared to its surroundings . Elastic tension of balloon skin is pulling inwards uniformly .

When we stick a pin inside the balloon it creates a tiny hole . Now the rubber around the hole is not being pulled uniformly anymore . 

Hence the force imbalance increases . In a fraction of second , the entire skin of the balloon gets contracted to a point opposite to the hole .

The high pressure air inside the balloon is now free to expand . This creates a pressure wave that we hear as pop sound .

 Pop sound is created after a sudden pressure change due to the rapid expansion of the air inside the balloon . All this process happens in a fraction of second .

Why does Mulla Naseeruddin refused to write the letter?

 Once a friend came near Mulla Naseeruddin and requested him to write a letter for him.

Naseeruddin directly refused to write the letter as his feet are paining. 

Friend was confused and asked Naseeruddin what the connection between his feet and writing the letter? 

Mulla Naseeruddin said, " As no one can read my handwriting, I myself have to go wherever the letter goes and read the letter to the recipient by myself!!!!" 

Brotherhood of Ram , Laxman, Bharat and Shatrugn

This incident happened when the 4 brothers were in their childhood . The 4 brothers were -----

Ram
Laxman
Bharath
Shatrugna


All the latter 3 considered Ram as their leader . They would not do anything against the will of Ram . The brothers were like this .. 


It was the time for them to leave the palace and go to gurukul to study . On reaching gurukul , Ram observed that they were given too much importance . Ram didn't like that .


He wanted they should be treated as normal children . Hence he stressed that they should be given the same food as other children have .


His brothers followed what Ram has done . They refused the food brought for them from the palace to have .


Once Manthara had brought the food only for her favourite Bharath . Bharath was the foodie . But knowing that the food was only brought for him and not for his brothers he refused to have it .


Then Ram came and clarified that they will have the same food as other children . Manthara got angry for not letting Bharath to have the food and started abusing Ram .


Laxman and Shatrugna who were watching all these , prepared to pelt the stones on Manthara for abusing Ram .


Later Ram consoled them and stopped them from pelting stones . This shows the brotherhood between the boys .

What colour is my hair?

 This is a mullah Naseeruddin story.

One day king has had ordered the royal barber to trim his head. Barber was doing his work and suddenly he exclaimed that hairs on King's head are turning gray!!!

This exclamation made the king to get angry.

He ordered the soldiers to arrest the barber and put him in the jail for 6 months. 

King turned to other courtier and asked him what is the colour of his hair?

Courtier said there are black hairs on the head of King. 

This made the king to get even more angry. He thought courtier is making fun of him .

He ordered the soldiers to put the courtier in jail.

Then he turned to other courtier and asked him the same question , what colour is my hair?

He thought for a moment and said king has all black coloured hairs on his head.

King shouted at him for telling lies and ordered the soldiers to punish him .

Mulla Naseeruddin was present at the court . He had seen everything .

Now king turned to Mulla Naseeruddin and asked him what is the colour of his hair ?

Naseeruddin politely said , " Sir , I am colour blind . I can't differentiate between the colours . But compared to me , you are luckiest . Mine is BALD HEAD " !!!!

Question on astronomy

 Children's special week episodes of Koun Banega Karodpati were telecasting on television.

There was a question on astronomy. I thought it as very simple. But actually it's not. Here's the question

In our solar system, which of these celestial objects are least in number?

1. Number of planets

2. Number of natural satellites

3. Number of stars

4. Number of planets with rings

I thought it as a simple question. 

I started calculating in my mind. 

Number of planets =  8

Number of natural satellites = 171

Number of stars = uncountable as it can be seen in the sky at night 

Number of planets with rings = 4

According to my chart which is shown above, the least number of celestial bodies is option 4 which is the number of planets with rings. In our solar system,  there are 4 planets with rings. 

Most of us think like this. 

But answer is number of stars which is 1.

Let me explain. 

It is said in our SOLAR System. 

In our solar system,  Sun is the only one star. There are no other stars in solar system except Sun.

But we do see lots of stars in the sky at night.  What about them? 

These stars are in our galaxy, not in our solar system. 

Solar system comprises of one star that is Sun. 

Hence correct answer is number of stars. 

When I was explained like this, I understood. 

Moral of the story :  First read the question carefully before attempting.