drift through the maze of Facebook recently led me to this story, originally published (at least as far as my work has come crawling) on \u200b\u200bthe web site the science journalist Manuel Calvo Hernando. I thought so wonderful that I could not resist playing it. In addition, tickets to copy and paste are so comfortable ...
Sir Ernest Rutherford, president of the British Royal Society and Nobel Prize in Chemistry in 1908, told the following story:
"Some time ago, I received a call from a colleague. I was about put a zero to a student who gave the answer a physical problem, although he categorically stated that his answer was absolutely correct. Teachers and students agreed to seek arbitration in an impartial and I was elected. I read the examination question: "Show how it is possible to determine the height of a building with the help of a barometer."
The student had answered: "Take the barometer to the roof of the building and tie a long rope. Descuélguelo to the base of the building, mark and measure. The length of the string is equal to the length of the building. " Actually, the student had posed a serious problem resolution of exercise, because he had answered the question correctly and completely. On the other hand, if granted the highest score, could alter the average of their year of study, get a higher note and so certify its high level in physics, but the answer did not confirm that the student has that level. Suggested that the student be given another chance. I gave me six minutes to answer the same question but this time with the caveat that the answer should demonstrate their knowledge of physics.
five minutes had passed and the student had written nothing. Le asked if he wished to leave, but he said he had many answers to the problem. Their difficulty was to choose the best of all. I apologized for interrupting him and asked him to continue. In the minute that he had wrote the following response: take the barometer and throw it to the ground from the roof of the building, calculate the decay time with a stopwatch. Then apply the formula H = 0.5 A for T2. And so we get the height of the building. At this point I asked my colleague if the student could be withdrawn. Gave the highest mark.
After leaving the office, I met again with student and asked him to tell me his other answers to the question. Well said, there are many ways, for example, take the barometer on a sunny day and measure the height of the barometer and the length of its shadow. If you then measure the length of the shadow of the building and apply a simple proportion, we get also the height of the building. Perfect, I said, what other way? Yes, I answer, this is a very basic measure a building, but also serves. In this method, you take the barometer and set yourself on the stairs of the building on the ground floor. As you climb the stairs, you mark the height of the barometer and count the number of marks to the roof. Multiply the final height of the barometer by the number of brands you've done and you have the height. This is a straightforward way. Of course, if you want a more sophisticated procedure, you can tie the barometer to a rope and move like a pendulum. If we calculate that when the barometer is at the height of the roof of gravity is zero and if we take into account the extent of the acceleration of gravity to lower the barometer in a circular path perpendicular passing through the building, the difference of these values, and applying a simple trigonometric formula, we can calculate, without a doubt, the height of building. In this style of system, tie the barometer to a rope and hang from the roof to the street. Using it as a pendulum can calculate the height precision measuring its period. In short, he concluded, there are many other ways. Probably the best is take the barometer and the door hit him in the house of the caretaker. When open, say,
concierge Sir, here I have a nice barometer. If you tell me the height of this building, I gift.
At this point in the conversation, I asked if they know the conventional answer to the problem (the pressure difference marked by a barometer in two different places provides the height difference between both sites) said he knew her, but during his studies, his teachers had tried to teach you to think. " ;
The student's name was Niels Bohr, Danish physicist, Nobel Prize for Physics in 1922, better known for being the first to propose the model of the atom with protons and neutrons and electrons that around. It was primarily an innovator of quantum theory.
Sir Ernest Rutherford, president of the British Royal Society and Nobel Prize in Chemistry in 1908, told the following story:
"Some time ago, I received a call from a colleague. I was about put a zero to a student who gave the answer a physical problem, although he categorically stated that his answer was absolutely correct. Teachers and students agreed to seek arbitration in an impartial and I was elected. I read the examination question: "Show how it is possible to determine the height of a building with the help of a barometer."
The student had answered: "Take the barometer to the roof of the building and tie a long rope. Descuélguelo to the base of the building, mark and measure. The length of the string is equal to the length of the building. " Actually, the student had posed a serious problem resolution of exercise, because he had answered the question correctly and completely. On the other hand, if granted the highest score, could alter the average of their year of study, get a higher note and so certify its high level in physics, but the answer did not confirm that the student has that level. Suggested that the student be given another chance. I gave me six minutes to answer the same question but this time with the caveat that the answer should demonstrate their knowledge of physics.
five minutes had passed and the student had written nothing. Le asked if he wished to leave, but he said he had many answers to the problem. Their difficulty was to choose the best of all. I apologized for interrupting him and asked him to continue. In the minute that he had wrote the following response: take the barometer and throw it to the ground from the roof of the building, calculate the decay time with a stopwatch. Then apply the formula H = 0.5 A for T2. And so we get the height of the building. At this point I asked my colleague if the student could be withdrawn. Gave the highest mark.
After leaving the office, I met again with student and asked him to tell me his other answers to the question. Well said, there are many ways, for example, take the barometer on a sunny day and measure the height of the barometer and the length of its shadow. If you then measure the length of the shadow of the building and apply a simple proportion, we get also the height of the building. Perfect, I said, what other way? Yes, I answer, this is a very basic measure a building, but also serves. In this method, you take the barometer and set yourself on the stairs of the building on the ground floor. As you climb the stairs, you mark the height of the barometer and count the number of marks to the roof. Multiply the final height of the barometer by the number of brands you've done and you have the height. This is a straightforward way. Of course, if you want a more sophisticated procedure, you can tie the barometer to a rope and move like a pendulum. If we calculate that when the barometer is at the height of the roof of gravity is zero and if we take into account the extent of the acceleration of gravity to lower the barometer in a circular path perpendicular passing through the building, the difference of these values, and applying a simple trigonometric formula, we can calculate, without a doubt, the height of building. In this style of system, tie the barometer to a rope and hang from the roof to the street. Using it as a pendulum can calculate the height precision measuring its period. In short, he concluded, there are many other ways. Probably the best is take the barometer and the door hit him in the house of the caretaker. When open, say,
concierge Sir, here I have a nice barometer. If you tell me the height of this building, I gift.
At this point in the conversation, I asked if they know the conventional answer to the problem (the pressure difference marked by a barometer in two different places provides the height difference between both sites) said he knew her, but during his studies, his teachers had tried to teach you to think. " ;
The student's name was Niels Bohr, Danish physicist, Nobel Prize for Physics in 1922, better known for being the first to propose the model of the atom with protons and neutrons and electrons that around. It was primarily an innovator of quantum theory.
Bohr, the Nobel nearly suspended for witty.
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