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Powerful ball lightning blue neon png. A strong electric charge of energy in one ring. Element for your design, advertising, postcards, invitations, screensavers, websites, games.
Alternating current (ac) and direct current (dc). Difference between AC and DC current. Physics resources for teachers and students.
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Ampere meter device icon isolated on white background.
Convection, heat transfer currents, labeled diagram. Mass movement of water. Warm, cool molecules energy movement. Cycle stove fire, hot water liquid in transparent pot. Vector illustration

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