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Topic: Incandescent light bulbs
no photo
Wed 10/26/11 08:04 PM

We have had those new bulbs here in New Zealand for many yrs now..I put new ones in every light socket in my house 3yrs ago, and they are still going great..When I brought mine they were on sale for 99cents..They were expensive when they first came out, and ugly, and you had no 'light glow' choice, but now they are smaller in length, and have different glows and are much cheaper now..Designed to save you money on your Electricity Bills..

We can choose to either use the old or the new bulbs, our choice..

I have the Cool Daylight ones which give a brilliant white light and you can also choose what kind light glow you want, as in the brilliant white light glow to the dim kind of yellow lighting..






Sounds like you have better choices than we do in America. That's really odd seeing as America is the consumer capitol of the world.

metalwing's photo
Wed 10/26/11 08:44 PM




The new bulbs don't put out as much light.
actually they put out more. I replaced 4 60 watts bulbs in my bathroom with 4 40 watts (the new kind). one of the new ones burned out in about a month grumble but the three that are still working put out more light than the 4 60 watters..


They put out much more light than the old kind. The light is given by lumens, not watts. A typical CFL will put out about three times the light per watt than a incandescent... which is the whole point of the change. They also last sufficiently longer to be cheaper to operate in the long run.


You're right, to a degree. A watt is a measurement of power. (I x E) "i" represents current, while "E" represents voltage, and "P" represents power 'watts' In other words, power (watts is directly proportional to the voltage applied, times the current used. For ex. 60 watts, divided by 120 volts = .5 amps, significantly higher than the new bulbs.

Lumens produced, is disproportional to the same amount of light.

The amount of power used to produce the amount of light a 60 watt incandescent emits, is significantly higher than the amount of power used by a CFL, true, however, both units provide 890 lumens, and in addition, CFL's provide a softer light, even though the lumens may be the same.

Also, the cost difference is significant. I have tried both, and the claim that these bulbs last ten times longer, simply isn't true. CFL's do last longer, but in my estimation, not enough to warrant paying 4-7 bucks (per bulb)

* post edited for error.


happy You're right, to a degree. I'm not sure the V=IR matters much in the comparison since over ninety percent of the current in an incandescent bulb is simply turned into heat. The only formula that really matters is the initial cost and the lumens per watt over the lifespan of the bulb.

I have used the CFLs for years and I have never had one burn out. I also use some small standard fluorescence bulbs and they burn out about every five to seven years.

There have been a lot of cost comparisons done by a lot of different agencies and they all come up with a big cost savings using CFLs. By contrast I bought some Chinese LED lights that didn't last a year. Go figger.

TxsGal3333's photo
Thu 10/27/11 12:12 PM
Humm I have been using the new ones for years and prefer them myself... I have a 4 pack of the old and well they just don't last....think They are still under my sink hummm wonder if I can get top dollar for them when they quit making them hehehebigsmile

jemare's photo
Thu 10/27/11 09:51 PM
I use both. The fluorescent bulbs are brighter but there is something that hasn't been addressed about them that I found out a LONG time ago. They do last a long time EXCEPT in rooms where the lights are turned off and on frequently. The action of turning on the fluorescent bulbs decreases their life expectancy. I had wondered why the bathroom lights did not last as long as in other rooms until finding that one out a long time ago. So even though I use the fluorescent in other rooms, the bathroom is one room that I mix the bulbs. I use one regular and one fluorescent in the vanity light. The two outside ones do start out dim in cold weather (New England), but in a minute or two they brighten up. I will be stocking up on the old bulbs thoughhappy

Mothette's photo
Fri 10/28/11 02:35 AM

I use both. The fluorescent bulbs are brighter but there is something that hasn't been addressed about them that I found out a LONG time ago. They do last a long time EXCEPT in rooms where the lights are turned off and on frequently. The action of turning on the fluorescent bulbs decreases their life expectancy. I had wondered why the bathroom lights did not last as long as in other rooms until finding that one out a long time ago. So even though I use the fluorescent in other rooms, the bathroom is one room that I mix the bulbs. I use one regular and one fluorescent in the vanity light. The two outside ones do start out dim in cold weather (New England), but in a minute or two they brighten up. I will be stocking up on the old bulbs thoughhappy


I'm glad I'm not the only one that knows this! Fluorescent is only more energy efficient if you leave it on. I learned that in 6th grade and have made minor changes to lifestyle ever since to be more energy efficient (I don't think "green" had even caught on at the time.) However, my bedroom bulbs and bathroom bulbs I require to be incandescent even though I leave them on the most because fluorescent gives me headaches and eyestrain. As if all my regular health problems weren't too much already. rant

Maybe it's a scheme, tell everyone it's being discontinued, jack up the price, make big money off people stocking up, and then "we decided it's in the best interest of everyone/the environment to keep it going."

metalwing's photo
Fri 10/28/11 05:50 AM
Edited by metalwing on Fri 10/28/11 05:54 AM

I use both. The fluorescent bulbs are brighter but there is something that hasn't been addressed about them that I found out a LONG time ago. They do last a long time EXCEPT in rooms where the lights are turned off and on frequently. The action of turning on the fluorescent bulbs decreases their life expectancy. I had wondered why the bathroom lights did not last as long as in other rooms until finding that one out a long time ago. So even though I use the fluorescent in other rooms, the bathroom is one room that I mix the bulbs. I use one regular and one fluorescent in the vanity light. The two outside ones do start out dim in cold weather (New England), but in a minute or two they brighten up. I will be stocking up on the old bulbs thoughhappy


Good point! I have lighted mirrors in the bathrooms with a row of incandescents across the top in my bathrooms. They get turned on for very brief amounts of time so the rapid cycle problem with CFLs doesn't occur. I use CFLs or full size florescents everywhere else.

I had a 4 watt CFL in my ceiling that came on at night for a night light that I replaced about once every seven years for the past twenty years. I just replaced it with an LED.(no more long ladders) I am not sure it counts officially as a CFL as it is just a tiny fluorescent with pins and a separate ballast.

s1owhand's photo
Fri 10/28/11 06:22 AM
Edited by s1owhand on Fri 10/28/11 06:23 AM


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