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The Antenna experiment.

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We are going to test the feasability of getting electricity from the atmosphere. We will use several kinds of antennas to put electricity to work. Just a simple dipole and unipolar antennas.. This is  intended this to be just a prototype for a much larger unit you would like to build. The antennas are meant for indoor use so that wet weather will not be a factor in preventing the experments in being completed.  Ages 10 and up.

Objective(s):

To teach that radio wavet can be captured create electricity.

To teach a basis alternating and direct current.

To educate that we can use natures own power instead of fossil fuel.

To compare student hypotheses with the actual results of the experiment

 
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Step 1: Hypothesis

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There is enough energy in the atmosphere to capture and put to work.

Step 2: What's needed.

Picture of What's needed.
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6 or more - rolls of cheap aluminium foil
1 - 10 -20 foot rope or other solid material such as a pvc pipe to hold the foil
Lots of tape

50 or so foot of copper wire

2 - ladders or something that can be used to hold up the antennas

Rectifiers (see circuit)
4 - gemanium diodes 1n34 or equivalent (or any diode if that is all you have)
2 - 0.2 uf 50v ceramic capacitors
2 - 100 uf 50v electrolytic capacitors

1 - rectifier bridge 50v or more

1 varialble capacitor form an old am radio,

25 or more 1n914 diodes (or equivalent)

Tv antenna transformer


Tools:

Voltmeter

Tv with dtv support

Dual ended alligatpr clip wires

Step 3: Strategy.

Picture of Strategy.
Each student is to take the materials and then put together various indoor antennas. They will need to use a bit of geometry to make the plates. By testing the coils with a compass they can see how magnetism works.  They will also see the force of wind can be put to work. They will get some experience at putting a project together as an engineer might do with a prototype. Lastly see the unit they have built create electricity. For younger students the soil and magnet platform could be pre-made.
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