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Special tall flasks for determining the viscosity and testing of fuels and lubricants - diesel fuel, gasoline in laboratory conditions
A typical representation of an induction machine, used to generate electricity by induction using transformed kinetic energy from the crank, vintage line drawing or engraving illustration.
An experimental set-up, in which the observed result is that the wheel rotates in the direction indicated by the arrow, vintage line drawing or engraving illustration.
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A magnet which owes its magnetic properties to the inductive action of an electric current, vintage line drawing or engraving illustration.
Little boy doing experiments in the laboratory. Explosion in the laboratory. Science and education.

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