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| − | {{BenutzerSeitenNichtVeraendernWarnung|rdiez}}
| + | #REDIRECT [[Benutzer:Rdiez/PageRemoved]] |
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| − | = Buying a light bulb used to be easy =
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| − | Buying a light bulb used to be really easy, but that changed with the arrival of energy-saving models.
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| − | It is very hard to buy a quality light bulb. I have often bought from "good" brand names and got disappointed.
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| − | Here is a feature list:
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| − | * Brightness. <br/> Unfortunately, the lumen values are not linear, especially from 2,000 [http://en.wikipedia.org/wiki/Lumen_%28unit%29 Lumen]. I don't know the maths. If you can help, please [[Benutzer:rdiez|drop me a line]]. This is the table I have been using for reference:
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| − | :{| {{prettytable}} class="wikitable"
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| − | |-
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| − | ! title= |Incasdencent Watt
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| − | ! title= |Lumen
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| − | ! title= |LED Watt
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| − | ! title= |Energy-saver Watt
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| − | |-
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| − | | 40
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| − | | 400
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| − | | 8
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| − | |-
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| − | | 60
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| − | | 720
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| − | |-
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| − | | 80
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| − | | 1,000
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| − | | 20
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| − | |-
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| − | | 100
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| − | | 1,200
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| − | |-
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| − | | 150
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| − | | 1,700
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| − | |-
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| − | | 200
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| − | | 10,000
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| − | |}
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| − | * Color temperature. 2700K is best. 3000K might be described as "soft, warm white", but you'll notice the difference.
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| − | * Turn-on speed.
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| − | * Lifespan.
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| − | * Cycling endurance.
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| − | * Clear or frosted glass.
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| − | * Noise.
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| − | * Dimmable.
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| − | * Physical robustness.
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| − | * Operating temperature.
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| − | == Compact fluorescent lamp (CFL) ==
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| − | I am particulary dissatisfied with [http://en.wikipedia.org/wiki/Compact_fluorescent_lamp compact fluorescent lamp (CFL)] technology, especially after all the hype.
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| − | The many drawbacks are:
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| − | * Expensive.
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| − | * Slow to turn on.
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| − | * Often last much shorter als advertised, due to low cycling endurance.
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| − | * Noisy. Most CFLs make a humming noise that you may notice in a quiet environment.
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| − | * Cold light colour.
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| − | * Normally not dimmable.
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| − | * The light bulb itself is also ugly.
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| − | * Contain toxic mercury (quicksilver) which complicates their disposal.
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| − | * They turn darker with time.
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| − | On the bright side, they consume very little electricity.
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