John. Thanks for pointing that out about kelvin. It is a good reminder.
Have a look (below the cooking graphic) at this temperature
graphic: http://metricpioneer.com/learn/cooking/
----- Message from j...@frewston.plus.com ---------
Date: Wed, 12 Nov 2014 20:36:33 -0000
From: j...@frewston.plus.com
Reply-To: j...@frewston.plus.com
Subject: [USMA:54451] Re: Lumens on Lighting Packages
To: "U.S. Metric Association" <usma@colostate.edu>
Just as a small technical point. There are no such things as degrees
Kelvin. They are just kelvins (and lower case only).
John F-L
-----Original Message----- From: c...@traditio.com
Sent: Wednesday, November 12, 2014 7:56 PM
To: U.S. Metric Association
Subject: [USMA:54449] Re: Lumens on Lighting Packages
So much the better! I haven't bought incandescent bulbs in about ten
years (CFLs last so much longer), so I didn't know that the lumen
information had been included on those packages as well. Also, the
packages show the light "warmth" in degrees Kelvin. That is very useful
as my eyes want the brighter ("daylight") light to read small print.
A correction: Lumens weren't introduced for CFLs. They have been on
incandescent bulb packages for a decade or more. Granted, they are
more
important for CFLs and LEDs, as the watts tell you nothing about the
amount of light across technologies, but they are not recent. Remember,
you are buying lumens and paying for watts to get those lumens. An
electric heater can be 1500 W and no lumens at all. -- John Steele
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----- End message from j...@frewston.plus.com -----
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