That day I just happened to ask a very simple question to a group of people. And I was really startled to get the answer.
The question is as follows.
A child in a snowy region created a SNOWMAN out of snow(obviously). Now this kid wanted the snowman to last as long as possible so that the snowman should not melt easily. He sought help from two people (lets say) A, and B
A:- Drape the snowman in a jacket from head to toe and it will not melt.
B:- A has gone crazy. If you drape the snowman in a jacket the snowman will melt and so just keep it in open and it will last long.
My question was: Whose option should the child take? A or B?
Amazingly enough, if I asked this question to 100 people, 96 of them answered that the option should be B. Most people were and are of the opinion that draping the snowman in a jacket will warm the inside of the jacket thereby resulting in rapid melting of the snowman. Rather is it good to keep the snowman in open.
The real answer is as follows.
"A" is correct. The snowman should be draped in a jacket. The thicker or multi-layered the better.The reason is that jacket or woolens create an insulation around the body. This insulation prevents the outside heat from entering the body but at the same time it doesn't allow the inner energy to escape too thereby creating a thermos flask type condition. This prevents the melting of the snowman as it remains virtually unaffected by the outside fluctuation of temperature.
This is the same case when you must have seen that ICE Chunks by the ice vendors are always covered by saw dust or thick rough clothing.
Some people may say that we feel warm inside the jacket but that warmth is the body warmth and not that the jacket is creating its own.
But a simple question like this threw up a viscious challenge of looking at the popular misconceptions that plague science and day to day life too.
The question is as follows.
A child in a snowy region created a SNOWMAN out of snow(obviously). Now this kid wanted the snowman to last as long as possible so that the snowman should not melt easily. He sought help from two people (lets say) A, and B
A:- Drape the snowman in a jacket from head to toe and it will not melt.
B:- A has gone crazy. If you drape the snowman in a jacket the snowman will melt and so just keep it in open and it will last long.
My question was: Whose option should the child take? A or B?
Amazingly enough, if I asked this question to 100 people, 96 of them answered that the option should be B. Most people were and are of the opinion that draping the snowman in a jacket will warm the inside of the jacket thereby resulting in rapid melting of the snowman. Rather is it good to keep the snowman in open.
The real answer is as follows.
"A" is correct. The snowman should be draped in a jacket. The thicker or multi-layered the better.The reason is that jacket or woolens create an insulation around the body. This insulation prevents the outside heat from entering the body but at the same time it doesn't allow the inner energy to escape too thereby creating a thermos flask type condition. This prevents the melting of the snowman as it remains virtually unaffected by the outside fluctuation of temperature.
This is the same case when you must have seen that ICE Chunks by the ice vendors are always covered by saw dust or thick rough clothing.
Some people may say that we feel warm inside the jacket but that warmth is the body warmth and not that the jacket is creating its own.
But a simple question like this threw up a viscious challenge of looking at the popular misconceptions that plague science and day to day life too.
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