Demography of Sweden divided in 10 years period.
Showing posts with label Group 11. Show all posts
Showing posts with label Group 11. Show all posts
Monday, December 10, 2007
Thursday, December 6, 2007
Wednesday, December 5, 2007
Faith
We borowed a projector, a OH- machine, a magnetmixer and two cups.
With these devices we wanted to experiment how it would look like if we created turbulence in water and the Non-Newtonian fluid. We first tried this with water. We put a cup on the magnetmixer and in the cup we put a magnet that would begin to spin once we turned on the magnetmixer. This spinning magnet created a whirl in the water, which is turbulence. The faster the magnet spinned, the bigger whirl was created. We poured some paint in the whirl to check what would happen and we saw that the paint first was held in the whirl but later on it was spread all over in the water.
We also tried this with the Non-Newtonian fluid. We saw that a whirl wasn´t created. This because of the faster the magnet in the cup spinned, the more resistance it was in the fluid. But if the magnet didn´t spinn fast it wasn´t much resistance in the fluid.
We couldn´t see anything we could develop this into so we are still thinking of something new.
Hope
For a couple of days now we have been experimenting with the Non-Newtonian fluid. We put the fluid in balloons and found that the balloons where very durable, because we could throw them into a wall and they didn´t break. We thought about products that we could apply this on. We came up of many ideas, like a stressball or a bullet-proof vest but nothing really that had with turbulence to do.
We experimented with a funnel that we filled with this Non-Newtonian fluid and poured little paint in it. We wanted to check how the color had placed it self on a plate, but we didn´t find any interesting results with this.
Tuesday, December 4, 2007
No where to run
We have filled a balloon with the non-newtonian fluid. The harder you hit the balloon (or throw it) the harder it feels. For the moment we are trying to come up with products to make out of this magic fluid. Thats where we are right now.
Experimenting
Today we started to experiment with the non-newtonian fluid. The fluid is based on water and corn starch. We are experimenting and hoping for a miracle.
Monday, December 3, 2007
Non Newtonian Fluid
This the a video showing how non-newtonian fluid behave when exposed to sound; http://www.youtube.com/watch?v=tpN1wfdbew0
Wednesday, November 28, 2007
Turbulence Art
A turbulent flow is random in the sense that you cannot predict what velocity a given flow will have in a specific time and place.
You could resemble the velocity of the flow at a given time and place - an unpredictable amount of kinetic energy - to the energy-level in a human being at different times at his or her life. For example, you could be happy and very active at some time, depressed and inactive at other times and so on. Statistically though, you can see that as we age, the energy-level also slowly declines.
In turbulence, big whirlpools are created at first, which then become smaller and smaller whirlpools, and eventually dissolve, where the kinetic energy becomes thermal energy, resembling death.
In other words, the ageing process in regard to energy-level, can be viewed upon as a turbulent flow; you can’t predict the energy-level at a given time, but statistically you can say that the energy-level declines as we age.
Another way of expressing turbulence is that it happens at big Reynolds numbers. The Reynolds number (a number used in fluid dynamics), simplified can be seen as measurement of the viscosity of a fluid, which describes it’s resistance to flow - a bigger Reynolds number means a higher flowing resistance in the liquid. A big Reynolds number also means that the flow is more sensitive to disturbances.
Now we can resemble the Reynolds number to the age of a person, which is also a number. As a person grows older, they won’t be as vigorous as they were when they were young; they’ll move slower, talk slower and so on. Also the turbulence in the ageing process will have increased, since they, for example, grow a bigger chance of getting certain diseases as they become older, which in turn affect the energy level. They also become more sensitive to disturbances (as with big Reynolds numbers), since for example a flu will have a much greater effect on an old person than on a young and healthy person.
You could resemble the velocity of the flow at a given time and place - an unpredictable amount of kinetic energy - to the energy-level in a human being at different times at his or her life. For example, you could be happy and very active at some time, depressed and inactive at other times and so on. Statistically though, you can see that as we age, the energy-level also slowly declines.
In turbulence, big whirlpools are created at first, which then become smaller and smaller whirlpools, and eventually dissolve, where the kinetic energy becomes thermal energy, resembling death.
In other words, the ageing process in regard to energy-level, can be viewed upon as a turbulent flow; you can’t predict the energy-level at a given time, but statistically you can say that the energy-level declines as we age.
Another way of expressing turbulence is that it happens at big Reynolds numbers. The Reynolds number (a number used in fluid dynamics), simplified can be seen as measurement of the viscosity of a fluid, which describes it’s resistance to flow - a bigger Reynolds number means a higher flowing resistance in the liquid. A big Reynolds number also means that the flow is more sensitive to disturbances.
Now we can resemble the Reynolds number to the age of a person, which is also a number. As a person grows older, they won’t be as vigorous as they were when they were young; they’ll move slower, talk slower and so on. Also the turbulence in the ageing process will have increased, since they, for example, grow a bigger chance of getting certain diseases as they become older, which in turn affect the energy level. They also become more sensitive to disturbances (as with big Reynolds numbers), since for example a flu will have a much greater effect on an old person than on a young and healthy person.
