|MadSci Network: Physics|
While most plasma occurs in the stars and in the interstellar medium, plasma does exist in our local environment under the right conditions. Some examples include lightning, electric sparks (even those produced by static electricity), the auroras, welding torches, fires, and neon signs. The "plasma spheres" that you see in stores do contain plasma. Plasma also exists inside fluorescent lamps but it cannot be seen because of the white phospor layer on the inside of the glass tube.
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