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Jul 06, 2009 at 16:39 in Sustainability In Design | Permalink
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Listed below are links to weblogs that reference The best 'please turn the lights off' door sign I've ever seen:
it's a little too obvious, don't you think?
Jul 06, 2009 at 17:52
Except it's deeply unscientific, in that a watt is a unit of energy over time, so "watts per hour" is meaningless. They mean 1960 joules per second ( 7056000 J/hr) - or just 1960 W.
According to Wikipedia, "a typical household incandescent light bulb uses electrical energy at a rate of 25 to 100 watts; compact fluorescent lights typically consume 5 to 30 watts, and LED lamps typically use between 1 and 5 watts." So if they've got their sums rights, that's one hell of a brightly-lit room.
Jul 06, 2009 at 19:03
I agree with James, but I'd also like to add something that might be relevant to typography wonks. The unit in question is a Watt. Within the Systeme Internationale, units of measure which are derived from the name of a person retain their capital letter.
And surely: "Be Green! Please switch them off when you leave." (OK - I'm on shaky ground capitalising Green, but you can't run those two sentences together with anything less potent than a semi-colon.)
Dominic Cronin |
Jul 06, 2009 at 20:19
If the lights are off, how can I appreciate the sign? Great points James and Dominic, can I add; soft return after 'this', capitalise and abbreviate 'watts per hour', second sentence… Forget it, I'll do it myself!
Jul 07, 2009 at 09:21
Dominic is wrong about the capitalisation of “watt”.
Units derived from a person's name have uppercase *symbols*, but the units' *names* are indeed lowercase: it's 1,960 W, but 1,960 watts.
(One semi-exception: “degrees Celsius” (°C) is capitalised thus.)
Greg K Nicholson |
Jul 08, 2009 at 00:14
I still want to see this room that is brighter than the surface of the sun itself.
Jul 09, 2009 at 15:35
Greg: thanks - I stand corrected. According to wikipedia, litre is also an exception in that the abbreviation is capitalised.
Dominic Cronin |
Jul 09, 2009 at 20:27
Its simple but this must do, it really cut their electricity bills if they follow that reminder. Or else try to replaced the traditional light bulb it helps a lot..
led xmas lights
Account Deleted |
Jul 30, 2011 at 09:14
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