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Showing posts from September, 2012

GROUP DISCUSSION

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IT IS AN ONLINE GD FORUM

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http://www.indiabix.com/group-discussion/topics-with-answers/



THANK YOU...




ILLUSION

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Muller Lyer illusion

The Müller-Lyer illusion is an optical illusion consisting of a stylized arrow. When viewers are asked to place a mark on the figure at the midpoint, they invariably place it more towards the "tail" end. 

It was devised by F.C. Muller- Lyer in 1889.


Ponzo Illusion

The Ponzo illusion is a geometrical- optical illusion that was first demonstrated by the Italian psychologist Mario Ponzo (1882–1960) in 1911.

He suggested that the human mind judges an object's size based on its background. He showed this by drawing two identical lines across a pair of converging lines, similar to railway tracks. The upper line looks longer because we interpret the converging sides according to linear perspective as parallel lines receding into the distance. In this context, we interpret the upper line as though it were farther away, so we see it as longer – a farther object would have to be longer than a nearer one for both to produce retinal images of the same size.



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Amazing Facts

The queen of England does not have the right to vote in any British election. - - -  The raised reflective dots in the middle of highways are called Botts - - -  The rapid rate of expansion of gas is what gives steam its power. One volume of water, at normal atmospheric pressure and at the boiling point, yields 1,670 volume of steam. - - -  The reason firehouses have circular stairways is from the days of yore when the engines were pulled by horses. The horses were stabled on the ground floor and figured out how to walk up straight staircases. - - - The reason why the very beginning of The Wizard of Oz is black and white, is because color was not available at that point. When color was available, the writers decided to start using it in Munchkinland. - - - The record for the most weddings is held by King Mogul of Siam, who had 9000 weddings and 9000 wives. - - -  The red capes used to taunt bulls in bullfights is the same shade of red as the bull's blood. That way you can't tell it is covered with t…