| 11. | An electric spark is usually generated once per turn of the knob or press of the button.
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| 12. | Revelers in the Ozone Disco Pub saw electric sparks and smoke moments before the disco went pitch black.
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| 13. | Combustible gas, mixed with air, is supplied into the combustion chamber and then fired by an electric spark.
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| 14. | A food is placed into this device and is ignited by an electric spark to burn the food.
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| 15. | Revelers in the packed Ozone Disco Pub saw electric sparks and smoke moments before the disco went pitch black.
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| 16. | They also can shoot electric sparks from their eyes, which is how you can tell them apart from politicians.
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| 17. | In a second re-enactment, they spilled gasoline in a Saab, tipped it into the ditch and created electric sparks.
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| 18. | To strike the welding arc, a high frequency generator ( similar to a Tesla coil ) provides an electric spark.
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| 19. | Flame igniters use electric sparks to initiate combustion in some furnaces and gas stoves in place of a pilot flame.
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| 20. | Electric sparks require a field strength above approximately 40 kV / cm in air, as notably occurs in lightning strikes.
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