[Gllug] Why we still like CRTs

Andrew Farnsworth farnsaw at stonedoor.com
Thu Nov 19 18:55:17 UTC 2009


On Thu Nov 19 11:38 , - Tethys  sent:

>On Thu, Nov 19, 2009 at 3:35 PM, John Winters john at sinodun.org.uk> wrote:
>
>> You what?!  Not on any CRT or LCD screen that I've come across.  Try
>> actually measuring the current being consumed by the two types of display.
>> I've known CRTs consume up to 750W (yes, seriously - although this was
>> quite a while ago).  LCDs tend to be more in the 20W-30W range.
>
>Yes, LCDs use less power. But the difference isn't as significant as some
>are making it out to be. The LCD I'm using at work uses around 50W. My CRT
>with comparable resolution is around 130W. That's a reasonable saving, but
>it's not the order of magnitude that some are claiming.
>
>Tet

I hate to nit pick, but it IS an order of magnitude difference.  Maybe not a 10
fold difference but that is not what an order of magnitude difference means.

130 Watts = 1.3 x 10^3 <-- Order of magnitude is three
 50 Watts = 5.0 x 10^2 <-- Order of magnitude is two

That is an order of magnitude difference.  This means that, technically, 99 and
100 are an order of magnitude apart, but you would not refer to them that way...
unless you were a reporter trying to sensationalize a story.

See: http://en.wikipedia.org/wiki/Orders_of_magnitude

Andy
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