Solar kettle I
They say that pupils interest in a subject is purely dependent on the teacher. If the teacher knows how to create the interests of children taught cm101 in substance, then in the future they can move in the appropriate direction. For years, the clink, the Latvian necessary science experts - mathematicians, physicists, chemists, and so on. I had the good fortune to primary and secondary schools during the study to a number of outstanding mathematics, physics and chemistry teachers in me the ability to create an interest in the relevant subjects. Despite the fact that their profession I have chosen computer science, but occasionally cm101 I do have a desire to make some kind of simple experiments.
Well a couple of years I have subscribed to the magazine Terra. cm101 For those of you who do not know, it's pretty powerful magazine about science and technology. You might say something like Science Illustrated, but meant not simply the people, but for those who have a deeper interest in the topics. There can regularly find interviews with the best Latvian chemistry, biology, physics, and so on. professionals, read about the latest discoveries in both Latvian and the world. In any case, an interesting magazine.
So here's the previous Terras room competition was announced for the best solar kettles construction. The rules are quite simple cm101 - as soon as possible during the boil 1 liter of water, and a source of energy may be used only renewable sources of energy and water starting temperature should not be higher than 20 C. The competition is called the solar kettle, then obviously JÁRÓKA sun power direction. Then tell you how I did with my first design. Why the first? Because the desired temperature cm101 has not been reached and there are better ideas for the design, to the end of the competition still remaining in almost cm101 a week. Idea
The initial idea is relatively simple. It is no secret that the car left in the sun heats up a man sorely temperature cm101 dozen minutes. In addition, given that my car is black seats, cm101 I feel especially good. So the original idea is simply to take a cardboard box, put the jar and wait. A little cm101 thought and concluded that the jars could be painted black to better absorb solar energy. Then imagine that instead of solar energy is absorbed cm101 by the wall of cardboard boxes, they can be covered cm101 with aluminum foil, which will reflect solar energy. Since the boxes will be located inside the black painted jar, then the reflected solar energy will go to the jars. So far all is well.
A little thought and remembered as a child ever niekojāmies with a magnifying glass - a couple of seconds on a sunny day could quite easily ignite a piece of paper or desiccated grass. A little too over eBay and found that the United States can be ordered large-sized magnifying sheets provided maps and phone books for reading. As the price of these pages were magnifying small enough, cm101 then they should not hesitate ordered. After one and a half weeks of my magnifying pages are present and I start to think about the construction of the kettle. Kettles design
Since the competition cm101 regulations have been told that the temperature measurements are taken at intervals of 1 minute, then had to buy the thermometer. So this morning I went to the store to buy a few necessary things - without a thermometer at home was not the aluminum foil and insulation tapes. If the tape and aluminum foil found K-rauta store, then with a thermometer was more difficult - all existing thermometers were intended for temperatures up to +70 o C. The goal of the competition is to boil water, cm101 then to +70 o C will not be enough. Then I went to Tevalo where I was at the thermometer, which operates up to +250 o C. So far have either. The previous evening I had managed to go to the neighbor's garage cm101 and painted black 1.6l cucumber jar. Now no longer postponed it all put in the box and go out into the sun and record the results.
Most teapots design process was relatively quick and simple. cm101 I spread the inside of the box with aluminum foil, security after affixed with adhesive tape at the sides of the box, then I insert the jar with water and fastened magnifying sheet cut out the hole in the front of the box. Are able to tea
Actually I had no idea whether this experiment will succeed - had an inkling that you need to boil the water with my design might not be enough. So Sedo box right next to the grass and waited, occasionally writing down the results: Time Water temperature o C 13:25 19.7 13:30 20.0 13:35 20.3 13:40 21.0 13:45 21 3 13:50 13:55 21.8 22.3 23.1 14:00 14:05 14:10 23.6 24.2 25.0 14:15 14:20 14:25 25.5 26.4 27.2 27.8 14:30 14:35 14:40 14:45 28.7 29.6 30.5 14:50 14:55 15:00 31.4 32.3 33.2 15:05 15: 10 34.1 35.0 15:15 15:20 15:25 35.9 36.8
A little looking at the results, I concluded that today water will not boil (at growth of 0.9 degrees every 5 minutes, I would need ~ 60 hours), then either the warp
They say that pupils interest in a subject is purely dependent on the teacher. If the teacher knows how to create the interests of children taught cm101 in substance, then in the future they can move in the appropriate direction. For years, the clink, the Latvian necessary science experts - mathematicians, physicists, chemists, and so on. I had the good fortune to primary and secondary schools during the study to a number of outstanding mathematics, physics and chemistry teachers in me the ability to create an interest in the relevant subjects. Despite the fact that their profession I have chosen computer science, but occasionally cm101 I do have a desire to make some kind of simple experiments.
Well a couple of years I have subscribed to the magazine Terra. cm101 For those of you who do not know, it's pretty powerful magazine about science and technology. You might say something like Science Illustrated, but meant not simply the people, but for those who have a deeper interest in the topics. There can regularly find interviews with the best Latvian chemistry, biology, physics, and so on. professionals, read about the latest discoveries in both Latvian and the world. In any case, an interesting magazine.
So here's the previous Terras room competition was announced for the best solar kettles construction. The rules are quite simple cm101 - as soon as possible during the boil 1 liter of water, and a source of energy may be used only renewable sources of energy and water starting temperature should not be higher than 20 C. The competition is called the solar kettle, then obviously JÁRÓKA sun power direction. Then tell you how I did with my first design. Why the first? Because the desired temperature cm101 has not been reached and there are better ideas for the design, to the end of the competition still remaining in almost cm101 a week. Idea
The initial idea is relatively simple. It is no secret that the car left in the sun heats up a man sorely temperature cm101 dozen minutes. In addition, given that my car is black seats, cm101 I feel especially good. So the original idea is simply to take a cardboard box, put the jar and wait. A little cm101 thought and concluded that the jars could be painted black to better absorb solar energy. Then imagine that instead of solar energy is absorbed cm101 by the wall of cardboard boxes, they can be covered cm101 with aluminum foil, which will reflect solar energy. Since the boxes will be located inside the black painted jar, then the reflected solar energy will go to the jars. So far all is well.
A little thought and remembered as a child ever niekojāmies with a magnifying glass - a couple of seconds on a sunny day could quite easily ignite a piece of paper or desiccated grass. A little too over eBay and found that the United States can be ordered large-sized magnifying sheets provided maps and phone books for reading. As the price of these pages were magnifying small enough, cm101 then they should not hesitate ordered. After one and a half weeks of my magnifying pages are present and I start to think about the construction of the kettle. Kettles design
Since the competition cm101 regulations have been told that the temperature measurements are taken at intervals of 1 minute, then had to buy the thermometer. So this morning I went to the store to buy a few necessary things - without a thermometer at home was not the aluminum foil and insulation tapes. If the tape and aluminum foil found K-rauta store, then with a thermometer was more difficult - all existing thermometers were intended for temperatures up to +70 o C. The goal of the competition is to boil water, cm101 then to +70 o C will not be enough. Then I went to Tevalo where I was at the thermometer, which operates up to +250 o C. So far have either. The previous evening I had managed to go to the neighbor's garage cm101 and painted black 1.6l cucumber jar. Now no longer postponed it all put in the box and go out into the sun and record the results.
Most teapots design process was relatively quick and simple. cm101 I spread the inside of the box with aluminum foil, security after affixed with adhesive tape at the sides of the box, then I insert the jar with water and fastened magnifying sheet cut out the hole in the front of the box. Are able to tea
Actually I had no idea whether this experiment will succeed - had an inkling that you need to boil the water with my design might not be enough. So Sedo box right next to the grass and waited, occasionally writing down the results: Time Water temperature o C 13:25 19.7 13:30 20.0 13:35 20.3 13:40 21.0 13:45 21 3 13:50 13:55 21.8 22.3 23.1 14:00 14:05 14:10 23.6 24.2 25.0 14:15 14:20 14:25 25.5 26.4 27.2 27.8 14:30 14:35 14:40 14:45 28.7 29.6 30.5 14:50 14:55 15:00 31.4 32.3 33.2 15:05 15: 10 34.1 35.0 15:15 15:20 15:25 35.9 36.8
A little looking at the results, I concluded that today water will not boil (at growth of 0.9 degrees every 5 minutes, I would need ~ 60 hours), then either the warp
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