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Lessons on Physics Three Laws of Motion 555 TIMER Albert Einstein Arbeiten mit Learnhub Boomerang in Zero Gravity Change of Gravitational Acceleration due to Height Electromagnetic Induction Gravi...
Zap it out with physics!
|Some of the following:
These fun experiments may seem different, but they all have a big element in common- static electricity!
All elements are made out of atoms. Atoms have 3 components- positive protons, neutral neutrons, and negative electrons. While the protons and neutrons are relatively stationary in the nucleus of atoms, electrons are free to move about (sort of).
Now, when you rub two materials against each other, you cause electrons to move. The electrons will move from one material to another. The one material from which the electrons left will have less negative particles now, so it will be positively charged. On the other hand, the second material which the electrons moved into will become negatively charged. And just like in real life, opposites attract- so 2 different charges attract while similar charges repel.
|So, we rub the balloon, thus charging it. Now, place it on your
pet, wall, whatever- they're neutral, which means that the charged
balloon will attract the particles in the other material, which
will cause the balloon to "stick" to it.
Similarly, say we charge the comb. Tiny water particles from the stream will be attracted to it, causing the water current to bend towards the comb. If you place another charged comb near the stream, the water will bend another way.
|Finally, when you walk on a
carpet, you charge yourself- your whole body. You'll notice that
this may cause your hair to "stand up straight", and this is
because the charges want to move out of your body and neutralize it
(return it to neutral). Note that this is only when the air is dry,
otherwise charges can escape into the air. When you get your hand
near a metal knob or some other conductive material, the charges
can't wait to leave and they "jump" from your hand to the door in a
form of a spark you can feel! That explains why you get small
electrocutions in winter when the air is dry.
And that's almost the same way lightning works in real nature! Awesome!
Physics is cool!