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I bought CFL lightbulbs once. Now I need some more, I turn around and
they're gone! Replaced by LED light bulbs. That was a short-lived
technology.
On 2020-01-17 20:46, John Doe wrote:
Phil Hobbs wrote:
John Doe wrote:
I bought CFL lightbulbs once. Now I need some more, I turn around and
they're gone! Replaced by LED light bulbs. That was a short-lived
technology.
Good riddance. CFLs stink on ice.
The poster is uninformed.
They're dim, slow, highly temperature-sensitive, fragile, not dimmable,
and produce ugly colours. Other than that, they rock.
They do save a bit of money, but the amount I spend on electric light is
pretty trivial.  LEDs are dramatically better than CFLs, and almost
competitive with incandescents for appearance, except in Christmas
lights. LED Christmas lights are hideous. (There's no reason you
couldn't make the nice diffused colours the same way as with tungsten,
but apparently nobody does.)
Cheers
Phil Hobbs
John Doe wrote:
I bought CFL lightbulbs once. Now I need some more, I turn around and
they're gone! Replaced by LED light bulbs. That was a short-lived
technology.
Good riddance. CFLs stink on ice.
Phil Hobbs wrote:
John Doe wrote:
I bought CFL lightbulbs once. Now I need some more, I turn around and
they're gone! Replaced by LED light bulbs. That was a short-lived
technology.
Good riddance. CFLs stink on ice.
The poster is uninformed.
I bought CFL lightbulbs once. Now I need some more, I turn around
and they're gone! Replaced by LED light bulbs. That was a
short-lived technology.
On 2020-01-17 20:46, John Doe wrote:
Phil Hobbs wrote:
John Doe wrote:
I bought CFL lightbulbs once. Now I need some more, I turn around and
they're gone! Replaced by LED light bulbs. That was a short-lived
technology.
Good riddance. CFLs stink on ice.
The poster is uninformed.
They're dim, slow, highly temperature-sensitive, fragile, not dimmable,
and produce ugly colours. Other than that, they rock.
They do save a bit of money, but the amount I spend on electric light is
pretty trivial. LEDs are dramatically better than CFLs, and almost
competitive with incandescents for appearance, except in Christmas
lights. LED Christmas lights are hideous. (There's no reason you
couldn't make the nice diffused colours the same way as with tungsten,
but apparently nobody does.)
Cheers
Phil Hobbs
Phil Hobbs wrote:
John Doe wrote:
I bought CFL lightbulbs once. Now I need some more, I turn around and
they're gone! Replaced by LED light bulbs. That was a short-lived
technology.
Good riddance. CFLs stink on ice.
The poster is uninformed.
On Fri, 17 Jan 2020 20:57:34 -0500, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:
On 2020-01-17 20:46, John Doe wrote:
Phil Hobbs wrote:
John Doe wrote:
I bought CFL lightbulbs once. Now I need some more, I turn around and
they're gone! Replaced by LED light bulbs. That was a short-lived
technology.
Good riddance. CFLs stink on ice.
The poster is uninformed.
They're dim, slow, highly temperature-sensitive, fragile, not dimmable,
and produce ugly colours. Other than that, they rock.
They do save a bit of money, but the amount I spend on electric light is
pretty trivial. LEDs are dramatically better than CFLs, and almost
competitive with incandescents for appearance, except in Christmas
lights. LED Christmas lights are hideous. (There's no reason you
couldn't make the nice diffused colours the same way as with tungsten,
but apparently nobody does.)
Cheers
Phil Hobbs
LED street lights could use some diffusers too.
On Fri, 17 Jan 2020 20:57:34 -0500, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:
On 2020-01-17 20:46, John Doe wrote:
Phil Hobbs wrote:
John Doe wrote:
I bought CFL lightbulbs once. Now I need some more, I turn around and
they're gone! Replaced by LED light bulbs. That was a short-lived
technology.
Good riddance. CFLs stink on ice.
The poster is uninformed.
They're dim, slow, highly temperature-sensitive, fragile, not dimmable,
and produce ugly colours. Other than that, they rock.
They do save a bit of money, but the amount I spend on electric light is
pretty trivial. LEDs are dramatically better than CFLs, and almost
competitive with incandescents for appearance, except in Christmas
lights. LED Christmas lights are hideous. (There's no reason you
couldn't make the nice diffused colours the same way as with tungsten,
but apparently nobody does.)
Cheers
Phil Hobbs
LED street lights could use some diffusers too.
On 2020-01-17 22:13, jlarkin@highlandsniptechnology.com wrote:
On Fri, 17 Jan 2020 20:57:34 -0500, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:
On 2020-01-17 20:46, John Doe wrote:
Phil Hobbs wrote:
John Doe wrote:
I bought CFL lightbulbs once. Now I need some more, I turn around and
they're gone! Replaced by LED light bulbs. That was a short-lived
technology.
Good riddance. CFLs stink on ice.
The poster is uninformed.
They're dim, slow, highly temperature-sensitive, fragile, not dimmable,
and produce ugly colours. Other than that, they rock.
They do save a bit of money, but the amount I spend on electric light is
pretty trivial. LEDs are dramatically better than CFLs, and almost
competitive with incandescents for appearance, except in Christmas
lights. LED Christmas lights are hideous. (There's no reason you
couldn't make the nice diffused colours the same way as with tungsten,
but apparently nobody does.)
Cheers
Phil Hobbs
LED street lights could use some diffusers too.
They're hell on astromomers, too.
On 2020-01-17 22:13, jlarkin@highlandsniptechnology.com wrote:
On Fri, 17 Jan 2020 20:57:34 -0500, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:
On 2020-01-17 20:46, John Doe wrote:
Phil Hobbs wrote:
John Doe wrote:
I bought CFL lightbulbs once. Now I need some more, I turn
around and they're gone! Replaced by LED light bulbs. That
was a short-lived technology.
Good riddance. CFLs stink on ice.
The poster is uninformed.
They're dim, slow, highly temperature-sensitive, fragile, not
dimmable, and produce ugly colours. Other than that, they rock.
They do save a bit of money, but the amount I spend on electric
light is pretty trivial. LEDs are dramatically better than
CFLs, and almost competitive with incandescents for appearance,
except in Christmas lights. LED Christmas lights are hideous.
(There's no reason you couldn't make the nice diffused colours
the same way as with tungsten, but apparently nobody does.)
Cheers
Phil Hobbs
LED street lights could use some diffusers too.
They're hell on astromomers, too.
Cheers
Phil Hobbs
Contrary to gas discharge lamps, the light output from LEDs is
easily adjustable, so fitting a light sensor into a street lamp,
it is possible to adjust lamp power depending of amount of
reflected light from dry, wet or snowy surfaces. Using movement
sensors it is possible to switch between half and full power, when
there are actually someone moving on a quiet street.
On 2020-01-17 20:46, John Doe wrote:
Phil Hobbs wrote:
John Doe wrote:
I bought CFL lightbulbs once. Now I need some more, I turn around and
they're gone! Replaced by LED light bulbs. That was a short-lived
technology.
Good riddance. CFLs stink on ice.
The poster is uninformed.
They're dim, slow, highly temperature-sensitive, fragile, not dimmable,
and produce ugly colours. Other than that, they rock.
They do save a bit of money, but the amount I spend on electric light is
pretty trivial.  LEDs are dramatically better than CFLs, and almost
competitive with incandescents for appearance, except in Christmas
lights. LED Christmas lights are hideous. (There's no reason you
couldn't make the nice diffused colours the same way as with tungsten,
but apparently nobody does.)
The street lamps around here are remotely controlled so that after 10pmThey could ALL be controlled by one lamp in the
street's entire string that tells them when to turn on and off. They
could talk by the power line or by radio. This stuff is easy.
On 2020-01-17 20:46, John Doe wrote:
Phil Hobbs wrote:
John Doe wrote:
I bought CFL lightbulbs once. Now I need some more, I turn around and
they're gone! Replaced by LED light bulbs. That was a short-lived
technology.
Good riddance. CFLs stink on ice.
The poster is uninformed.
They're dim,
Other than that, they rock.
They do save a bit of money, but the amount I spend on electric light is
pretty trivial.
It is impressive how much LEDs have improved in QE since the early
indicator LEDs of the 1970's which could barely be seen in daylight.
Though they did brighten up enormously when dunked in LN2 to stiffen the
crystal lattice (at least until thermal cycling killed them).
On Saturday, January 18, 2020 at 4:44:58 AM UTC-5, Martin Brown wrote:
It is impressive how much LEDs have improved in QE since the early
indicator LEDs of the 1970's which could barely be seen in daylight.
Though they did brighten up enormously when dunked in LN2 to stiffen the
crystal lattice (at least until thermal cycling killed them).
An (older and wiser) friend and colleague once told me: "Successful technologies tend to take off immediately."
The internal combustion engine overtook steam very quickly in transportation. Trains replaced canal barges. Word processors replaced typewriters. The list goes on and on.
By comparison, "game-changing" advances in wind, solar, and even battery design have been significantly more sluggish. The business lesson here is that a technology venture that takes off quickly, has a chance, but one that struggles too long to launch is probably doomed from the start! (He puts nuclear power into this latter category, for example.) I haven't asked him (yet) where he might slot Tesla electric cars.
He has two PhD degrees from MIT.
I would add LED lighting to that list. Look around and there can be little doubt it is a highly successful technology. They are everywhere. They have plenty of advantages over just about every other lighting technology. Specifically including, I would add, CFL - which in my limited, (i.e., short-lived) experience with them, they were fairly expensive (but so were early LED bulbs), not particularly bright for their size, didn't last very long, were fragile, and often wouldn't even fit a lamp shade.
Maybe the question should be:
What real advantages do CFL have over LED (or other types of lighting).
I can't think of any.