Do we all see the same color?

Can anyone prove that we all see the same color? 
     Are there any cases where one sees brown and others see it to be green, but they both call it Red?

                     When one grows up, either his/her parents or teachers tell what a color is called...like, they show leaves and say it is green in color. But, can anyone assure that both the teacher/parent and the child see the same color? There are cases in which one sees some orange, but his parents and teachers call it some purple. And, it is true that throughout the life, right from the birth, one feels that sky is always red (which he calls to be blue but is actually the pleasing blue to others).

                      For the question, if everyone sees the same color, answer would definitely be 'Yes' since we all have the same photo receptors that detect color, we all see the same in this until and unless these receptors do not function properly. So, there is no confusion with respect to color that we see.

                      This improper functioning of those receptors can be termed as color blindness.

How do a color blinded person see the world?

Let us consider this example:  Look at this figure....

For people with normal vision: We can see 0 to 9 in different squares

For color blind people.. it looks like something this:
There will be no differentiation between the shades.

Here is another example:

Consider the following illustration:

This figure if shown to a person with normal vision, he can see number 7 between pink, yellow and orange bubbles.

But, if we show the same figure to a person who is color blind, it looks something like this to him:

He cannot see 7 in that figure as the pink, yellow and orange seem to be green (different shades of green) to him.

                    The interesting thing is that, right from his childhood, he has been thinking that the color which everyone terms as pink, and which he feels to be pink is actually green and he will never ever know the same in his life.

                    Around 5% of population is color blind as per some study. We never know if we are color blind... Chances are high that the color which we feel to be particular color may actually seem another color to other...

What happens when an overhead electric cable breaks and falls on the train we travel?

I have an interesting question...
                
                      Suppose, a person who is standing on the roof of an electric train touches the 25,000 Volts cable and gets electrocuted... or suppose the overhead electric cable breaks and falls on the train...What happens to the passengers in the train? Do they get electrocuted?

               
                       The body of the train is Cast Iron, the Railway track is made of Mild Steel and the interiors of the compartment are also made of steel. All these conduct electricity. So, obviously, the whole compartment should get electrocuted and since the railway track is a continuous one, entire system should be affected.

                       But, it is not the thing that happens. Thanks to the safety department of Railways which ensures passenger safety in such a case. Of course, the power is active when the cable comes in contact with the train but it goes to the ground through the compartment. Immediately after the cable breaks, the high voltage circuit breakers will interrupt the power supply, and stop the power in very less time.
           
                       Hence, the passengers would not be affected unless they come out and touch the ground and the railway track. As long as people stay in the train they are like a bird on a wire and nothing happens.

                       So, no problem... we can travel safe without any fear...

The Positive side of Ravana

                   We all know about Ravana as the  demon king of Lanka. We burn the effigy of Ravana on Vijayadashami and observe it as a triumph over evil by Lord Rama.

                   There are many great things about Ravana which we should take into our consideration. Ravana is known to have ten heads which symbolically mean that he is fully aware of the contents of the six Shastras and the four Vedas making a total of ten Holy Scriptures. In spite of being a person with ten heads, he lacked control over senses., which lead to his downfall. Ravana was a scholar, Ayurveda doctor, a great astrologer who authored Ravana Sanhitha, a book on Hindu Astrology and the ruler of Sri Lanka from 2554 BC to 2517 BC.

                   There are certain scets of people in Sri Lanka who worship Ravana and they have very interesting reasons  for the evil things done by him. Their theory states that Ravan's daughter is Sita. He had abandoned her because the astrologers predicted that she would be the cause of his death. She was later brought up by King Janaka.

                   One more theory for Ravana leaving his daughter in the forest states that he along with his queen went to forest and did intense meditation to please Lord Shiva for the sake of having a kid. He was given a mango to be eaten by his queen. Ravan, instead, ate the fruit himself and became pregnant. Thus, he gives birth to Sita through nasal sneeze. [I think, this could be the probable reason why my father always says 'Sita Ayush' whenever I sneeze, thus reminding us the way Sita is born through a sneeze..] And then, he abandons her in the forest.

                    When Ravana came to know about this exile, Ravan tried a lot to bring Sita back to his kingdom and free her from the forest. But Sita refused to come with him as it is against the culture. So, he had to become a villain just to take her to the Ashoka-Vanam which is the most beautiful place in Ravana's Land.

                   Whatever may be the theory, let us try to appreciate the positive points and respect him for the knowledge he possessed in various fields.