| 11. | In 1928, the RAF developed an electric heating system for the aerial camera.
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| 12. | When in 1972 an electric heating system was available, two prototypes were constructed.
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| 13. | Nearly two-thirds of all new homes are built with gas rather than electric heating.
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| 14. | It has a nonslip rubber surface, and inside it is an electric heating element.
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| 15. | These were already kitted-out with electric lighting and electric heating.
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| 16. | Some modern models incorporate electric heating elements connected to timers.
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| 17. | In Quebec, however, electric heating is still the most popular form of home heating.
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| 18. | Its electric heating element becomes hot in seconds upon activation.
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| 19. | Also, if necessary, the system activates the electric heating of windscreen and rear window.
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| 20. | There is no electric heating or light in the church.
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