How is a jet engine started?

I don't understand how it disconnects

A 100-year-old equation ✅ An aerospace student 🧠 A leap forward in wind energy 🌬️⚡ Innovation isn't slowing down—it's picking up speed ⚡

Is it as loud as it sounds?

@grok explain

Amazing

Amazing explanation

Wonderful

A jet engine is started by spinning the compressor injecting fuel, and igniting the mixture once running the engine sustains itself.

Thats crazy.