11. It consisted of a very powerful incandescent lamp enclosed in a metallic cylinder. 12. First, a mechanical connection was made between lamp and incandescent lamp . 13. A built-in incandescent lamp allows the camera to focus in low light conditions. 14. Compared to general-service incandescent lamps giving the same mercury which complicates their disposal. 15. CFLs are extremely cost-effective in commercial buildings when used to replace incandescent lamps . 16. A common design uses an incandescent lamp or a thermistor in the feedback circuit. 17. As well as the motors, there were a few incandescent lamps around the shafts. 18. For this reason, other producers like Univibe preferred incandescent lamps . 19. Early LED lamps varied greatly in chromaticity from the incandescent lamps they were replacing. 20. This was successful in the case of the " Columbia Incandescent Lamp Co ".
