What is the principle behind my homemade railgun?

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    Application Railgun
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SUMMARY

The discussion centers around the construction and operation of a homemade railgun using aluminum foil strips and a 9V battery. The user describes connecting alligator clips to both aluminum strips, which serve as the conductive rails for the railgun. A pair of magnets, attached to a steel rod, acts as the projectile that moves along the rails when powered. The principle of operation involves electromagnetic propulsion, where the current flowing through the rails generates a magnetic field that propels the projectile forward.

PREREQUISITES
  • Basic understanding of electromagnetism
  • Familiarity with circuit components such as batteries and alligator clips
  • Knowledge of conductive materials and their properties
  • Experience with simple mechanical assembly
NEXT STEPS
  • Research the principles of electromagnetic propulsion
  • Learn about the design and construction of railgun systems
  • Explore safety precautions when working with high currents
  • Investigate the effects of different materials on railgun performance
USEFUL FOR

This discussion is beneficial for hobbyists, physics enthusiasts, and makers interested in DIY electronics and electromagnetic devices.

franz32
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I have made an small application of a railgun. It looks simple but I don't get its principle involved here.

On a cardboard, two strips of aluminum foils are pasted qith an equal distance apart from each other, resembling a train's path.
A pair of alligator clips, both ends have 'head', in which the front heads of each are attached to one of the foils. the other ends on a 9V battery.

I assembed a pair of magnets connected by a 3 inch steel cut from a coathanger at the center of each magnet. Then here's the fun.
When I placed the "wheel" at the path, it moves away from the
start.
 
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Question:
Are the alligator clips connected to only ONE aluminum strip, each end, and the other aluminum strip not connected to anything electrically?
 
Yah...

Hello to you!

Hmmm, I guess I did not mention it clearly. One alligator clip is attached to one of the foils while the other one is attached to another foil.
 

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