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Why doesn’t a nuclear bomb create a chain reaction that destroys the entire planet?

  Because real life is not Hollywood plus 4 reasons. Fission vs. Fusion : Nuclear bombs work on the principle of nuclear fission – splitting heavy atoms like uranium or plutonium. This releases energy, sure, but to destroy the entire planet? Not enough oomph. What you'd need is a fusion reaction, the kind that fuels stars. That involves lighter atoms like hydrogen fusing, and it's way more powerful. Think of fission as a firecracker, fusion as the sun. We're nowhere near making a fusion bomb as big as our planet. The Limits of Chain Reactions : Even in a fission bomb, the chain reaction doesn't run wild forever. The explosion itself scatters the nuclear fuel, disrupting the critical mass needed to sustain the reaction. It's like trying to keep a bonfire going by throwing the logs across the field. Dissipation of Energy : The colossal energy released by a nuke mostly disperses as heat, light, and a shockwave. Earth is just way too big to absorb all that and go kabloo...

What do magnetic fields depend on?

 

Take a stationary charged particle, say an electron.

What do you see? A stationary electric field.

Now move slowly, perhaps around the electron or perhaps just pacing up and down past it.

What do you see? A stationary electric field. No!

You see an varying electric and magnetic field, how cool is that?

The magnetic field is what an electric field looks like when I move relative to it!

Magnetic monopole and the nature of the static magnetic field


This is user-generated content and all the credit to this post lies to Alfred Dominic Vella

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