Time to stock up on Incandescent light bulbs

[Faster horses]

(This might get moved to PB, but I thought it would get read better here.)

Dimwitted Politicians Banish Light Bulbs;

When President Obama referenced Thomas Edison in January's State of the Union speech as a shining example of America's history of innovation, he apparently didn't see the sad irony in the fact that his government is now moving to crush one of Edison's great inventions: the incandescent light bulb.
Buried in a 2007 energy bill that Obama had supported as Senator (and that George W. Bush hastily signed into law) was a sweeping ban on incandescent bulbs. It will start going into effect next year, at which time 100-watt bulbs will disappear from store shelves (as is already happening in "progressive" California, which elected to implement the federal standards early). By 2014, most other incandescent bulbs, all the way down to 40 watts, will be restricted throughout the country.
On our "watch list" of potential investments: Who gets to handle and dispose of the federally mandated mercury-laden bulbs. A new, unproductive, government-created industry.
Politically Mandated Light Bulbs Are a Bad Deal All Around
The idea behind the forced phase-out is that it will induce Americans to buy alternative bulbs, such as LEDs and (toxic and mercury-laden) CFLs, that use less electricity. These fancy bulbs also happen to be much more expensive. That will translate into a short-term revenue boost for politically connected companies such as "Government Electric" (GE), which is all too eager to support federal meddling into every American's home-lighting decisions.
Many people refuse to buy the pricier bulbs because they give off a harsh, white, sterile kind of light more suited to office buildings than living rooms. Also, since incandescent bulbs give off more radiant heat, people in cold climates are able to run their heating systems a little bit less often with them (a factor ignored by the self-proclaimed champions of energy efficiency).
Rep. Joe Barton (R-TX) has introduced legislation to repeal the dim-witted light bulb law. There's practically no chance of it getting Obama's signature, though. In the meantime, stock up big time on 100-watt light bulbs this year if you use them and would like to continue to be able to do so. Then stock up on other wattages before they disappear in 2014.

 

[Silver]

Times are a changing, that's for sure. I think the Canadian timetable is about the same. I think in the end it will be a good thing. One thing about those lights, they seem to last a long time. Also, if one is counting on them as a source of heat then one is really looking towards an inefficient source. I'm a little grumpy about the change, but I find I get that way when facing any change.
I too am concerned about the disposal of these bulbs, because it will become an issue. I wonder how the total heavy metal numbers will compare with the numbers from the cell phone / computer gadget industry? Who looks after that?
I always get a kick out of Edison being credited with inventing the light bulb :lol: Really, it should read that he purchased the patent then improved it.... purchased from an innovative Canadian actually :shock:

 

[cowsense]

There have been several news magazine type shows on about people with severe health reactions to the new bulbs.....extreme skin & allergic reactions to the point that some cannot even tolerate being in a building that uses any of these bulbs!

 

[Martin Jr.]

We have put up with the mercury in regular florescent bulbs and that type of light for many years, so that is nothing new.

LED lights are being developed now, that in time may replace other lighting.

 

[hypocritexposer]

Came across this and remember this thread, so...

The Chemistry Of Light Bulbs—And Why CFL's Are Overrated
By UvaE
Created Mar 26 2011 - 8:22am

Light bulbs rely not only on simple materials but on esoteric ions and compounds. And while we take their emissions, visible light, for granted, the inner workings of these deceivingly simple gadgets depend on the complex behavior of electrons.

We'll discuss four types of light bulbs:incandescent bulbs, halogens, fluorescent lights (including CFL's) and LED's.

A) INCANDESCENT BULBS

The light bulb of the short-lived variety, is the traditional tungsten incandescent bulb. Inside the glass, electricity flows through a thin filament of the element tungsten (chemical symbol, W, for its old name wolfram).

Because the wire is so thin, resistance is high, and it raises the temperature of the tungsten wire, so chosen because of its high melting point of 3410 oC. At the bulb's temperature, which is about 1000o cooler, excited electrons that return to lower energy states release photons of a frequency that is visible to the human eye. The radiation is intense in the red to yellow regions but compared to daylight, the

spectrum of an incandescent light bulb is very weak in the 400 to 500 nm region (blue). This would be nice to verify with a prism, and is the reason that plants don't do as well if grown under such light. Although the heat is not sufficient to melt the tungsten it would certainly fry the heck out of it in an oxidizing atmosphere. Thus manufacturers replace oxygen with a mixture of the less reactive nitrogen and the noble gas argon. Note that a vacuum would not be a good solution because the tungsten would vaporize even more easily and dramatically shorten the bulb's lifespan.

Even within an argon-nitrogen atmosphere, however, the heat causes some of the tungsten to sublimate. Some of it returns to the wire as it bounces off the argon gas, but a good deal ends up on the glass. This is one of the reasons incandescent bulbs tend to get darker with increased use. The glass suffers more abuse from plain old electrons which fly off the filament as if it were a cathode ray tube from a conventional television set. Such electrons cause tiny black spots to appear. These first caught Edison's attention, but he had never time for further investigations; otherwise, as David Bodanis suggests, Edison may have discovered electrons before J.J. Thomson. To create a more diffuse light but perhaps in an attempt to camouflage all the future damage, manufacturers treat light bulb glass with hydrofluoric acid one of the few acids that can attack glass) which creates that familiar frosty look.




B)HALOGENS

Eventually the tungsten wire becomes so thin, that it snaps, breaking the circuit and sending you off to the hardware store. At one point someone got tired of the bulb's short lifespan and invented the halogen light bulb. This still uses tungsten but along with argon it includes a small amount a halogen gas, namely chlorine. The reactive gas combines with the tungsten vapour and deposits it again on the filament. In other words it recycles the tungsten, rather than letting it wastefully deposit on the glass. Of course, it is very unlikely that the metal will be perfectly and evenly replaced all along the coiled filament. Weak spots eventually develop, and the coil still breaks, but it takes a lot longer, and halogen bulbs outlive their incandescent counterparts. The glass has to be able to withstand higher temperatures, so they use a purer form of silicon dioxide, one that unfortunately gets ruined by oils on our skin. If these bulbs are mishandled as such, the grease should be washed away with alcohol.



C)FLUORESCENT BULBS

To avoid wasting energy in the form of heat, fluorescent lights, ubiquitous in schools and other institutions, operate by a totally different principle. They contain a small amount of
mercury(Hg), which emits ultraviolet light when excited by electrical energy. The story
cannot end there because ultraviolet(UV) is invisible to the human eye. The walls of the
bulbs are coated with a phosphor, usually a halophosphate such as Ca5(PO4)3(F,Cl) with
ions of Sb3+ and Mn2+ that absorb the UV radiation. The excited electrons then release visible
light, compliments of fluorescence. In this form of luminescence, an excited electron
returns from a specific molecular orbital to a lower one without inverting its spin. The
resulting light has the bulk of its intense wavelengths in the yellow and blue regions. But
relative to natural light, fluorescence is weak in the red regions. Plants will again remain
"unhappy", unless you buy more expensive fluorescent lights which try to compensate for
this weakness by substituting antimony and manganese ions in the phosphor with
europium and terbium ions.


Next we come to the smaller version of type 3 bulbs, compact fluorescent bulbs(CFL's), which are overrated for three reasons:

(1) Practically, the CFL's are not as bright as halogens and although they match the light intensity of incandescent bulbs, they take a while to reach their peak intensity.

(2) They were not designed for cold climates, where the traditional bulb's inefficiency is less of a drawback. The heat generation is actually desirable for about 9 months of the year in the northern states and Canada because it means the main heat source in the home does not have to work as hard.

(3) It's ironic that something marketed as an environmental savior actually contains mercury. According to Environment Canada, the Hg content varies from 1 to 25 mg per bulb. There are about 115 million American households. If each household breaks 3 bulbs per year either by accident or indirectly by sending them to a landfill, then between 300 kg and 9000 kg of mercury (one significant figure) are added to the environment in the United States alone. The annual mercury emissions from all sources in the United States are estimated at 43 700 kg ( over 12000 kg from Alaska).

D)LEDS

To gain insight into how an LED (light emitting diode) bulb works we need to be reminded that a diode consists of two adjacent wafers of silicon doped with different impurities. The latter do not have the same valence number as silicon. If the impurity or "doping agent" is short of an electron(for example, boron), its wafer will receive an electron from the wafer with the opposite problem(example arsenic). Since electrons are stepping down from a higher energy level, photons are released. The energy gap is usually small and will only emit in the infrared, but it's still useful if you want to use the remote control to turn off your daughter's music channel.

To get visible light you need to get away from the classic boron-arsenic combo representing a valence of 3 and 5, respectively. If aluminum and gallium(each with a valence of 3) replace boron, one can create a red LED. If indium replaces aluminum, the transition energy increases, and blue light is released. The third primary color is created by replacing arsenic with another valence 5 element, phosphorus, and combining it with aluminum and gallium. A white color can result from combining all three recipes or by coating the bulb with a phosphor.

Although there are still technical challenges ahead, LED lights will probably replace CFC's. But perhaps not to add too much arsenic to the environment, we should also use incandescent light or simply wait for sunrise to read science.



References

University Corporation for Atmospheric Research http://www.ucar.edu/news/releases/2007/nicc-table.shtml

US Census http://www.census.gov/prod/1/pop/p25-1129.pdf

Environment Canada http://www.ec.gc.ca/mercure-mercury/default.asp?lang=En&n=2486B388-1

Efficiency of CFL's http://www.cbc.ca/news/canada/manitoba/story/2009/03/04/mb-light-bulbs.html

US Department of Energy http://www1.eere.energy.gov/buildings/ssl/how.html

http://science.howstuffworks.com/light-bulb2.htm

http://www.science20.com/print/77526

 

[Aaron]

Times are a changing, that's for sure. I think the Canadian timetable is about the same. I think in the end it will be a good thing. One thing about those lights, they seem to last a long time. Also, if one is counting on them as a source of heat then one is really looking towards an inefficient source. I'm a little grumpy about the change, but I find I get that way when facing any change.
I too am concerned about the disposal of these bulbs, because it will become an issue. I wonder how the total heavy metal numbers will compare with the numbers from the cell phone / computer gadget industry? Who looks after that?
I always get a kick out of Edison being credited with inventing the light bulb :lol: Really, it should read that he purchased the patent then improved it.... purchased from an innovative Canadian actually :shock:

No one looks after it. Take CRT monitors and tube TV's for example, thick glass lined with lead on the inside and virtually no market to deal with it. Only place I have heard that deals with tubes is a place in Indianapolis that has the special equipment to separate the lead and the glass. Most every other place on the continent tosses them into the landfill.

The dirty little secret about tubes in that you can recycle everything else on the TV, but it is illegal to throw the separated tube in a landfill, it's classified as hazardous waste. But you can throw the whole TV in the dump without anyone batting an eye.

I would like to see us skip CFL's altogether and go into LED's, but rising electricity rates are 'encouraging' more to go to CFL's, whether they want to or not.

On a separate note, it would be interesting to know what people around the country pay for their electricity per kw/h.

 

[lightninboy]

I've got light bulbs up high in barns where the only way I can change them is with a Mr. LongArm bulb changer and I wouldn't want to break one changing it.

http://www.mrlongarm.com/bulbletterchangers.html

 

[Oldgoat]

Flourescent light is dangerous.. I worked in offices lit by flourescent light and after 30 years, most of my hair fell out. Got some teeth missing and arthritis. Must have been the lights because I am only 74 years old.