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

sezo@tvt-pecs.sulinet.hu