The physics of why birds aren't fried by power lines
In short: It seems like a miracle that birds can perch on high-voltage wires without being electrocuted. This video explains the fundamental principles of electricity that keep them safe while posing a lethal threat to humans.
The safety of a bird depends on four key physical factors: voltage, current, resistance, and grounding. For electricity to harm an organism, there must be a complete circuit allowing current to flow through the body. Because a bird sitting on a single wire is not touching anything else, there is no path for the electricity to travel to the ground.
The video explores why touching one wire differs significantly from touching two, and explains how larger birds might face different risks than smaller ones. It serves as a practical demonstration of circuit rules, showing that danger arises from the completion of a path rather than just proximity to power.
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Sources
- Summary by Intellect · source: Why Don’t Birds Get Electrocuted on Power Lines?
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