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When the air was pumped out of it and the glass evacuation tube was sealed off with a flame. Many early bulbs had the evacuation tube on the top, so the Edison base was already attached.
What kind of clouds are covering the sky on weekends
Different makes use different bulbs, need to know what vehicle you have.
In recent years, the light bulb started to change when the newer CFL bulbs came out. The newer bulbs were energy efficient and people were urged to change older incandescent bulbs to the newer ones.
covering crawl space with plastic help cut down on humidity in the house?
Yes, Sodium bulbs have a glass center piece and a glass bulb surround.
The glass covering on what?
glass and such
glass with powder coating
A person who makes glass is a glassmith if that helps
Iris do not need covering in winter.
A sheet with a sticky material on it, is palced in the field with a source of light for example bulbs, tubelights, torch etc. This needs to be done at night. The moths are attracted towards light and they stick to the sheet.
The function of a choke in a lamp circuit is to produce high voltage. In tubelights, the high voltage is essential for ionisation of the gas which is present in tubelights.
We planted lots of Tulip bulbs in the Autumn.
Glass, metal, inert gas.