Thursday, July 23, 2009
"An early electrostatic influence machine, invented by Wilson in 1804. A ball electroscope observes the output voltage."
From: youtube description video
Science bob explain quickly how to produce sounds from a straw and how to make a chicken voice using a plastic glass.
http://www.youtube.com/watch?v=RwJr6Iugcrkendofvid
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This videos shows how polyurethane foam is made, you need just mix together the polyol and the isocyanete. A chemical reaction will happen and the total volume will grow up 30 times the original size.
[endtext]
http://www.youtube.com/watch?v=gjUFTiHYN5kendofvid
[starttext]
Find out how the materials absorb heat and the relation between heat and temperature for different materials.
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http://www.youtube.com/watch?v=rOib92FriZYendofvid
[starttext]
Instead of these materials you can use a simple magnet from speakers, paper clips and adhesive type to build your own electrical motor.
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http://www.youtube.com/watch?v=zRQkYWpeMsYendofvid
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This video shows a different kind of electrical engine, it uses two coils as electrical magnets to attract, alternately, a piece of iron and generates movement.
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http://www.youtube.com/watch?v=3jr39mU8H8kendofvid
[starttext]
Water and ice when looked at infra red camera can help us to understand how light and heat are related.
[endtext]
Make at home one Wilson's machine
"An early electrostatic influence machine, invented by Wilson in 1804. A ball electroscope observes the output voltage."
From: youtube description video
Music from a straw and a chicken in a cup
Science bob explain quickly how to produce sounds from a straw and how to make a chicken voice using a plastic glass.
The magic of polyurethane foam: polyol and isocyante
[starttext]
This videos shows how polyurethane foam is made, you need just mix together the polyol and the isocyanete. A chemical reaction will happen and the total volume will grow up 30 times the original size.
[endtext]
Is possible to boil water inside a balloon?
[starttext]
Find out how the materials absorb heat and the relation between heat and temperature for different materials.
[endtext]
Simple way to build an electrical motor
[starttext]
Instead of these materials you can use a simple magnet from speakers, paper clips and adhesive type to build your own electrical motor.
[endtext]
Different kind of electrical engine
[starttext]
This video shows a different kind of electrical engine, it uses two coils as electrical magnets to attract, alternately, a piece of iron and generates movement.
[endtext]
Infra red images of everyday life 2
[starttext]
Water and ice when looked at infra red camera can help us to understand how light and heat are related.
[endtext]
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