Tuesday, May 6, 2014

Why do we use crushed stones in transformer area?

Near my house , a building under construction is complete and they have installed a transformer. Now they have covered the area below to transformer with crushed stones.
I have seen in many places  , the same phenomena.
Crushed stone is a highly resistive material and is used to protect the passing persons from step potential which may be very high and dangerous if there is an electrical fault.
The other reasons are to avoid water stagnation ,to prevent growth of plants under transformer.
The main reason for placing the stones is to protect the person from High Voltage ( HV ) while walking. We know that we can not walk fast over stones , our steps do become slow and with this our stepping potential becomes less which is very important for our safety, since stepping potential must not be more than a certain calculated value.

Monday, May 5, 2014

Bee Goddess - Bhramari Devi

                                    Bee Goddess - Bhramari Devi

According to Hindu mythology, once there lived a demon named Aruna. He wanted to establish his kingdom by driving out all the devas.
For this reason, he did hard meditation and got the boon that he will not be killed by any creature which has 2 legs or 4 legs. That means he can not be defeated by any human , deva , other demon or any other animal , having 4 legs.
This made him almost invincible. He invaded heaven. By seeing him, all the devas fled fearing for their life , leaving behind their wives and children in heaven.
Aruna in rage ordered his army to bring out all the women and children who are present in heaven. Army brought all of them infront of him.
Fearing for their life, wives of devas prayed to goddess Adi Parashakti. Adi Parashakti had known about boon that Aruna had got.
She had taken the form of bee , which has 6 legs. From that she is not contradicting the vows of boon. She had come with swarm of bees.
All of bees attacked the demon army and goddess herself stung the demon , Aruna to his death. From that time, she was called Bhramari Devi / Bhramarambika ( Bhramara means bee in Sanskrit ) . Thus , she saved the world from the clutches of demon.

Saturday, May 3, 2014

What are homophones?

A homophone is a word which spell in the same way as another word but differ in their spelling and meaning.
Examples
Knew               new
ice cream          i scream
ad                    add
eye                   i
bean                 been
These are some of the words. Most of them really depends on the way how they are being spell.

Friday, May 2, 2014

How did elephanta caves got its name?

                              How did elephanta caves got its name?

Elephanta caves are the sculpted caves near Mumbai harbour. ( Like Ajanta and Ellora ). These is.lands located on Arabian sea.
These sculpted caves consists of 2 types of caves , one is Hindu caves and the other Buddhist. This islands were the place of worship until Portuguese rule began. 
The Portuguese called the island " Elephanta " , on seeing its huge gigantic statue of elephant at the entrance. 
The caves are of unknown date and attribution.

Thursday, May 1, 2014

What does it mean when the sky is pink?

              What does it mean when the sky is pink?

Today morning, the sky was somewhat pink. I thought it is going to be sunrise, hence sky is pink.But my searching led to other findings ---
In the morning, if the sky is pink , it means it is going to rain. If it is pink in the evening , it means it is going to be clear sky.