Search type Search syntax
Tags [tag]
Exact "words here"
Author user:1234
user:me (yours)
Score score:3 (3+)
score:0 (none)
Answers answers:3 (3+)
answers:0 (none)
isaccepted:yes
hasaccepted:no
inquestion:1234
Views views:250
Sections title:apples
body:"apples oranges"
URL url:"*.example.com"
Favorites infavorites:mine
infavorites:1234
Status closed:yes
duplicate:no
migrated:no
wiki:no
Types is:question
is:answer
Exclude -[tag]
-apples
For more details on advanced search visit our help page
Results tagged with Search options user 400

Sustainable sources of and use of light, whether natural or artificial.

2
votes
At present it is not sustainable. There isn't enough difference in efficiency. All bulbs have Hg according to Wikipedia, but 'eco friendly' have less. Jonny's comment prompted a check. "Eco fr …
answered Jan 17 '16 by Sherwood Botsford
1
vote
Read your local electrical code carefully. Usual requirement is that a recessed ceiling fixture must have no flamalable material in X inches. If in a ceiling/attic space there is supposed to be an a …
answered Jan 10 '15 by Sherwood Botsford
7
votes
a high efficiency light that works at -40. I think we have 5 tungsten bulbs still in stock. Once they are used up we will replace them with fluorescents or LED bulbs. …
answered Jul 18 '17 by Sherwood Botsford