He puts grapes in the microwave: what happens is amazing
published on 3 July, 2018 at 15:34
A man decides to try a "scientific" experiment to find out what happens if you put grapes in a microwave. The consequences will leave you speechless: the grapes transform into a kind of aerial and "catches fire" making plasma, a ionized gas consisting of a set of electrons and ions. Of course, the operation can be dangerous, and should not be replicated at home.
What do you know about plasma?
Plasma is one of the four fundamental states of matter, and was first described by chemist Irving Langmuir in the 1920s. Unlike the other three states, solid, liquid, and gas, plasma does not exist freely on the Earth's surface under normal conditions. Plasma can be artificially generated by heating or subjecting a neutral gas to a strong electromagnetic field to the point an ionised gaseous substance becomes increasingly electrically conductive, and long-range electromagnetic fields dominate the behaviour of the matter.
Plasma may be the most abundant form of ordinary matter in the universe, although this hypothesis is currently tentative based on the existence and unknown properties of dark matter. Plasma is mostly associated with stars, extending to the rarefied intracluster medium and possibly the intergalactic regions.
Plasma temperature is commonly measured in kelvins or electronvolts and is, informally, a measure of the thermal kinetic energy per particle. High temperatures are usually needed to sustain ionisation, which is a defining feature of a plasma. The degree of plasma ionisation is determined by the electron temperature relative to the ionization energy (and more weakly by the density), in a relationship called the Saha equation. At low temperatures, ions and electrons tend to recombine into bound states—atoms—and the plasma will eventually become a gas.
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