Anyone moved to LED Lighting?

[Josepi]

It does become hard to differentiate sales promotion at the cost of other product bashing from honest testing and reporting, whatever that is...LOL

I believe it was that same report that brought in LED lighting as a similiar problem as fluorescent spectrums. I wouldn't have believed that lighting spectrum balance was so important but as I age I find myself very affected by lighting, particularly SADS type responses due to lack of sunlight.

In fact, most health claims related to 460 nm from advocates of full-spectrum lamps are that non-full-spectrum fluorescents do not produce enough in the 460 nm area (which most white LEDs do produce a lot of).

As it turns out, CFLs do not produce a lot of ultraviolet, in fact much less than is present in an equivalent amount of daylight that has passed through a glass window. CFLs produce more UV than incandescents do, but still little.

- Don Klipstein ( [e-mail])

[Josepi]

It looks like the answer will be too install incandescent in the winter when we can use the heat efficiently and CFLs in the summer when we get enough sunlight anyway...LOL

I still wonder about the effects of staring at the TV with flourescent lighting behind it night after night. I have just ordered a new LED backlit unit. This could be the new lighting / behaviour study coming with the CRT units disapearing.

- Don Klipstein ( [e-mail])

[Josepi]

I have had every brand made, I think. Sylvania,Phillips, GE, Globe, and a miriad of brands I have never seen before. I am not sure which ones had problems. I have had some DOA units too in 6-packs. I have had units that took 5 minutes to brighten so you could tell they were on when I lived on solar power, on cold days.

I sell old units to Jewish people for weddings. Nobody knows it isn't a wine glass breaking inside the bag...LOL

Perce

Josepi wrote: I have never had a CFL burn out yet in several years of usage. Many have broken or came apart from the base and leaked.

[Josepi]

I have had every brand made, I think. Sylvania,Phillips, GE, Globe, and a miriad of brands I have never seen before. I am not sure which ones had problems. I have had some DOA units too in 6-packs. I have had units that took 5 minutes to brighten so you could tell they were on when I lived on solar power, on cold days.

I sell old units to Jewish people for weddings. Nobody knows it isn't a wine glass breaking inside the bag...LOL

Perce

Josepi wrote: I have never had a CFL burn out yet in several years of usage. Many have broken or came apart from the base and leaked.

[Don Klipstein]

Have you actually seen mercury leaked from a CFL? I doubt it - the quantity is very small.

Meanwhile, I have extensive CFL usage, and never broken or cracked one unless I dropped it. I have seen one CFL that cracked during use, among hundreds of burnouts that I have had a chance to see.

I have had a few come apart at the base during handling - like 2, with one additional having the tubing come loose from tubing end overheating while approaching burnout, with none of these 3 having the tubing break, while I have had more burnouts than that in my home since 1990. Both the ones that had their bases coming apart were dollar store stool specimens of usual dollar store brands.

- Don Klipstein ( [e-mail])

[Don Klipstein]

The BS one snipped out here by any chance?

Phototherapy for SADS tends to consist of:

1. Quantity first and foremost - this needs a lot of light.
2. Secondarily, many sources indicate favorability of 460 nm area blue spectral content - which most white LEDs have a lot of and where most fluorescents run on the low side.

- Don Klipstein ( [e-mail])

Your newsreader adds only one quotation symbol per line, even for lines having more than one level of quotation. This is unusual in Usenet.

- Don Klipstein ( [e-mail])

[Don Klipstein]

Except CFLs still cost in the winter when the main home heating is by something more cost-effective than resistive electric heating, as in heat pump or non-electric heating.

Spectra of CRT monitors has about the same coverage/reception by all known and suspected photoreceptors in the human eye as spectra of higher color temp. CFLs. I own some diffraction gratings BTW...

As in ones thatare nothing but diffraction gratings, besides the ones that most people have some of and that can also show spectra (CDs and DVDs).

- Don Klipstein ( [e-mail])

[Stormin Mormon]

Nothing like having to go around and change to the other set of light bulbs, twice a year. How would you know when to perform such change?

[dgk]

You would also need to factor in extra cooling in summer which likely offsets the winter heat gain.

[Josepi]

No. Mercury? I believe it was the vaccuum that leaked out...LOL

I agree that some may have been the dollar store crap but some were Phillips and Sylvania too. I suspect many are manufactured by the same factory.

I would bet some have cheap glue/adhesives used and are not good for the excessive heat when used in a ceiling mount. Incandescents used to be labelled this way (for mounting position) by some, years back.

Meanwhile, I have extensive CFL usage, and never broken or cracked one unless I dropped it. I have seen one CFL that cracked during use, among hundreds of burnouts that I have had a chance to see.

I have had a few come apart at the base during handling - like 2, with one additional having the tubing come loose from tubing end overheating while approaching burnout, with none of these 3 having the tubing break, while I have had more burnouts than that in my home since 1990. Both the ones that had their bases coming apart were dollar store stool specimens of usual dollar store brands.

- Don Klipstein ( [e-mail])

I have never had a CFL burn out yet in several years of usage. Many have broken or came apart from the base and leaked.

[Josepi]

The symbol you are refering to is probably a right caret. Your browser has added them.

- Don Klipstein ( [e-mail])

- Don Klipstein ( [e-mail])

[Josepi]

Please explain your comment about diffaction gratings. I don't understand the usage here for light spectrums. Do they function similar to prisms to difract the spectrum for analysis? TIA

Spectra of CRT monitors has about the same coverage/reception by all known and suspected photoreceptors in the human eye as spectra of higher color temp. CFLs. I own some diffraction gratings BTW...

As in ones thatare nothing but diffraction gratings, besides the ones that most people have some of and that can also show spectra (CDs and DVDs).

- Don Klipstein ( [e-mail])

[Josepi]

LOL. Yup, economic OCD is difficult.

"Stormin Mormon" wrote in message news:hgt641$g5g$ [e-mail]... Nothing like having to go around and change to the other set of light bulbs, twice a year. How would you know when to perform such change?

[Don Klipstein]

I was referring to the "greater than" symbol.

I use a newsreader for Usenet. Mine adds a greater than symbol to lines being quoted, even if they already have greater than symbols due to being previously quoted. Newsreaders do this because Usenet culture expects them to. Your software apparently not intended to be a newsreader apparently refuses to add one to a line already having these, even if you are adding a level of quotation. Missing greater than symbols can confuse readers as to who wrote what.

- Don Klipstein ( [e-mail])

[Don Klipstein]

Although the physical principles are different, the effect of a diffraction grating is similar to that of a prism.

- Don Klipstein ( [e-mail])

[Josepi]

"greater than" is only a usage in mathematically expressions for a ">" symbol. There are many proper names for the symbol but the mathematical usage or meaning does not apply here.

Some Usenet browsers have evolved to more advanced levels and support the style, quite well. Your style is only one of the many used on Usenet and other forums.

My Usenet browser can read and write posts on Usenet. Are you using a separate newswriter to post?

I see no confusion. All text is with the respective headers containing the reference, who posted it and sometimes the time and other details, depending on the browser used.

I use a newsreader for Usenet. Mine adds a greater than symbol to lines being quoted, even if they already have greater than symbols due to being previously quoted. Newsreaders do this because Usenet culture expects them to. Your software apparently not intended to be a newsreader apparently refuses to add one to a line already having these, even if you are adding a level of quotation. Missing greater than symbols can confuse readers as to who wrote what.

In article , Josepi wrote: The symbol you are refering to is probably a right caret. Your browser has added them

[Don Klipstein]

Then why does HTML call them that?

I read and post with the same software.

The few times I used a browser software package to post, it added those symbols at the beginning of every quoted line, same as software intended for Usenet use. It certainly does that when I reply to e-mails. That was the composer automatically invoked by the mail/news software included into Netscape 4.7.

However, I have done at least 99.9% of my postings with tin or slrn running on a Unix shell account. My guess is that they invoke Pine or something similar for composing.

Now I notice that whatever you are using is not adding them at all. That can make things confusing when people used to this Usenet convention of using these (or occaisionally alternatives such as colons) snip out signatures and stuff from signature files to edit for space.

Meanwhile, references are all in a single line that is one of the headers of an entire article.

- Don Klipstein ( [e-mail])

[Stormin Mormon]

If memory serves, a diffraction grating is a series of very tiny prisms, adding up to the effect of being a very large prism, but some how made flat.

[salty]

Using the Usenet STANDARD of "greater than" symbols is not just for the convenience of sighted people. News reader software for the blind depends on those symbol to find just the most recent post, and also be able to maneuver around a post, from fresh, to previous to 2nd previous, etc.

[Robert L Bass]

Agreed. Following the standard makes it convenient for lazy people like me who really don't want to read every line of each post just to figure out which part was the last entry. Say what you like about how great your news client software is. If others find it difficult to follow they will ignore your posts.

That said, isn't this meta-thread getting a bit long and silly?