i am studying inter second year. i have physics practical on 16th feb. i want breif explanation of surface tension experiment
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Motorized Paper Fish
This experiment from the 1800's was quite popular, as it shows what seems to be sudden movement caused by no actual observable forces.
Needed materials:
piece of paperscissorsvegetable oil or liquid dishwasher detergenta large bowl or loaf cake pan full of waterIn addition, you will need a pattern for the Paper Fish. To spare you my attempt at artistry, check out this example of how the fish should look. Print it out - the key feature is the hole in the center and the narrow opening from the hole to the back of the fish.
Once you have your Paper Fish pattern cut out, place it on the water container so it floats on the surface. Put a drop of the oil or detergent in the hole in the middle of the fish.
The detergent or oil will cause the surface tension in that hole to drop. This will cause the fish to propel forward, leaving a trail of the oil as it moves across the water, not stopping until the oil has lowered the surface tension of the entire bowl
Hope it helps..
This experiment from the 1800's was quite popular, as it shows what seems to be sudden movement caused by no actual observable forces.
Needed materials:
piece of paperscissorsvegetable oil or liquid dishwasher detergenta large bowl or loaf cake pan full of waterIn addition, you will need a pattern for the Paper Fish. To spare you my attempt at artistry, check out this example of how the fish should look. Print it out - the key feature is the hole in the center and the narrow opening from the hole to the back of the fish.
Once you have your Paper Fish pattern cut out, place it on the water container so it floats on the surface. Put a drop of the oil or detergent in the hole in the middle of the fish.
The detergent or oil will cause the surface tension in that hole to drop. This will cause the fish to propel forward, leaving a trail of the oil as it moves across the water, not stopping until the oil has lowered the surface tension of the entire bowl
Hope it helps..
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