Strange but true experiments in physics
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Transcript of Strange but true experiments in physics
Strange but true Strange but true experiments experiments
in physicsin physicsSebestyén Zoltán and Sebestyén Zsolt Hungary - Pécs, 2005 Szeptember
Miraculous air-pressure
Sebestyén Zoltán and Sebestyén Zsolt Hungary - Pécs, 2005 Szeptember
The normal air pressure is 105 Pa = 105 N/m2 = =1000 N/dm2. So the force of the air pressure is 104 N (1000 kg) on an approx. 10 dm2 surface.
Magnet that repels graphite
Sebestyén Zoltán and Sebestyén Zsolt Hungary - Pécs, 2005 Szeptember
Here the magnetic force has an effect in the direction of the smaller magnetic field.
So the diamagnetic graphite repels the magnet.
Magnet that repels graphite - Levitation -
Sebestyén Zoltán and Sebestyén Zsolt Hungary - Pécs, 2005 Szeptember
Shoe-lace physics I
Sebestyén Zoltán and Sebestyén Zsolt Hungary - Pécs, 2005 Szeptember
Shoe-lace physics II
Sebestyén Zoltán and Sebestyén Zsolt Hungary - Pécs, 2005 Szeptember
This shoe-lace will not undone (loosen) by itself.
This shoe-lace will undone (loosen) by itself.
Which will flow out faster? • The same amount
of water is in both of the plastic bottles.
• The hydrostatic pressure will be bigger at the deepest point of the right sided bottle.
Sebestyén Zoltán and Sebestyén Zsolt Hungary - Pécs, 2005 Szeptember
Determining the pressure in an air-balloon I
Sebestyén Zoltán and Sebestyén Zsolt Hungary - Pécs, 2005 Szeptember
Here the height of the water-level is approx. 20 - 30 cm.
So according to this the pressure in the air-balloon is approx. 2 - 3 kPa.
Determining the pressure in an air-balloon II
Sebestyén Zoltán and Sebestyén Zsolt Hungary - Pécs, 2005 Szeptember
•So according to this experiment, the pressure in an air-balloon is approx. 2 - 3 kPa too.
•Here the dynamometer, which contact-surface is 3 cm2, shows approx. 1 N force.
Measuring our lung-pressure• Here the average
height that the people can achieve is 150 cm. It means that we can produce an approx. 15 kPa maximum pressure in our lung.
• Sporters can make much higher lung-pressure.
Sebestyén Zoltán and Sebestyén Zsolt Hungary - Pécs, 2005 Szeptember
Human being power as an electric cell
The aluminium fork is the negative output and the steel knife is the positive output.With 5-6 people, the led will burn.
Sebestyén Zoltán and Sebestyén Zsolt Hungary - Pécs, 2005 Szeptember
The Human being is the electrolyte.
Thank You for Your attention!
Sebestyén Zoltán and Sebestyén Zsolt Hungary - Pécs, 2005 Szeptember