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Florescent light bulbs?

J

Joseph Brenner

Jan 1, 1970
0
Richard The Dreaded Libertarian said:
Panurge wrote:
Well, he's obviously a fanatic. He's in the grip of some kind of witch's
brew of guilt, angst, and ego superiority.

Mother Earth is going to do whatever Mother Earth chooses to do, and
there's not a whole lot we can do about it - nor can we do anything

Heh. Well, you clearly know something about fanaticism.

I don't know what it is today, but the internet is amusing me
left and right. (Or at least, right.) I must've gotten back
in touch with my sardonic amusement bone.

This is one of the funniest things I've come across in a long
time, a review of Thomas Friedman's latest book ("The Flathead",
or whatever):

http://www.nypress.com/18/16/news&columns/taibbi.cfm

(I hope you physics/math/electronics types don't mind a bit of
random thread-drift... we live by it over in alt.gothic.)
 
E

Eeyore

Jan 1, 1970
0
whisky-dave said:
I'm looking at replacing my kitchen ceiling lights but all the DIY stores
are pushing
the halogen bulbs. Most are 25-50w each bulb which tends to mean
100-200w for the average 'set' considering my present old tube is about 30w
that makes these halogens very inefficient, so unless they are pushing these
halogen
because they are expensive and 'blow' quite regularly compared to tubes
and incandescent bulbs, why are tehy pushing them.

They're supposed to be cool and trendy.

Graham
 
J

Joseph Brenner

Jan 1, 1970
0
What he said was carefully crafted to give the
impression that he is responsible, while allowing
plausible deniability. Therefore he is a liar.

And what are we to make of the people who insist on distorting
what he actually did say?

("Liar! Liar! Liar!" My, politics is fun.)
 
R

Richard Henry

Jan 1, 1970
0
Joseph said:
I don't know what it is today, but the internet is amusing me
left and right. (Or at least, right.) I must've gotten back
in touch with my sardonic amusement bone.

This is one of the funniest things I've come across in a long
time, a review of Thomas Friedman's latest book ("The Flathead",
or whatever):

http://www.nypress.com/18/16/news&columns/taibbi.cfm

(I hope you physics/math/electronics types don't mind a bit of
random thread-drift... we live by it over in alt.gothic.)

Soon, someone at sed will start posting recipes in this thread.
 
CoreyWhite said:
...

He is wrong about a lot of his theories. He claims that global warming
is caused only by C02 gasses,

I never heard him claim either that global warming was only caused by
carbon dioxide or that carbon dioxide was more than one gas.

The rest of what you wrote is even more wrong.
 
E

Eeyore

Jan 1, 1970
0
Richard said:
Soon, someone at sed will start posting recipes in this thread.

I made a delicious veggy sauce for pasta only yesterday.

I'll happily give you the details.

Graham
 
E

Eeyore

Jan 1, 1970
0
Spehro said:
Some reason it can't be used on rice or couscous?

Not at all, I imagine it would go with either very nicely.


The following was for a generous serving for one person.

Chop 1/2 medium size onion fairly finely and 'sweat' in a large frying pan with
vegetable oil, ideally olive oil, on a lowish heat.

After about 5-8 mins add 1 chopped small yellow pepper and 1 chopped small red
pepper.

Add ~ 1 clove garlic and a verly light spinkling of mixed Italian herbs. I
'cheat' and use garlic puree btw.

Continue to sweat until the veg become very slightly soft.

If you have available ( I did ), chop several pieces of sun dried tomato into
pieces ~ 1cm sq and add to the pan. You can also get sun dried tomato as puree
too btw.

Lastly add ~ 1/2 16 oz ? can of peeled plum tomatos ( with the juice ) and allow
to simmer very gently until of the consistency you like. You can also add a
small amount of concentrated tomato puree for slightly more 'tang' btw.

Check for flavour. If the peppers were very fresh it may be quite sweet already.
You can also add some brown sugar to taste ( try a teaspoonful initially ).

Serve on fresh pasta ( or indeed rice or couscous ).

Graham
 
J

joseph2k

Jan 1, 1970
0
I knew that.


Reread the comment that got me wondering. The implication was
that the phone was used as a dildo. So...either the female
knows when the male is calling and never answers to use it
or ...??? IOW, how does the male know that the female is
using the vibration and keeps ringing long enough until
climax? hmmm...I suppose those cameras are getting used already..

/BAH

I think i understand people with multiple cell phones now, 1 for talking,
one for pictures / video, and one more as just discussed. Hmmph, beepers
are cheaper.
 
J

joseph2k

Jan 1, 1970
0
Rich said:
Well, it won't explode, but it will burn, albeit with a really dirty,
greasy, sooty orange flame.

And isn't it almost the same as kerosene? That certainly burns in a
lantern. :)

Cheers!
Rich

Actually aerosols between LEL and HEL of deisel or baking flour will
explode. Google for "grain mill explosion" if you do not trust me.
 
Halogens operate at a high temperature so emit a very crisp white
light which is very good in the kitchen. I prefer halogens to
fluorescents pretty much everywhere.

My folks have a halogen lamp. When I'd visit them in the summer,
Dad would turn it on at night and the temp of room would increase
a LOT. I'd never use them; I'm too afraid of fire.

/BAH
 
J

joseph2k

Jan 1, 1970
0
Eeyore said:
Thanks for that Alan.

I browsed eBay a bit longer and finally found the kind of thing I was
looking for. I could't have been looking hard enough before.

I found some CFLs at 30, 45 and 65 W
http://cgi.ebay.co.uk/ws/eBayISAPI....MEWA:IT&viewitem=&item=280058375469&rd=1&rd=1
http://cgi.ebay.co.uk/ws/eBayISAPI....MEWA:IT&viewitem=&item=280058068352&rd=1&rd=1
http://cgi.ebay.co.uk/ws/eBayISAPI....MEWA:IT&viewitem=&item=280058067410&rd=1&rd=1

I'm sceptical that the 30W is really as bright as a normal 150W
incandescent myself, so I reckon I'll go for a 45W.


Graham

I also have found that the claimed equivalent brightness / output is about 1
size off.
 
W

whisky-dave

Jan 1, 1970
0
Eeyore said:
whisky-dave wrote:



They're supposed to be cool and trendy.

Ok, I'm convinced I'm getting the one with 6 bulbs and a block
of blue LEDs on the fixing plate :)
 
Don said:
I know gasoline usually cannot be ignited by a cigarette, but the
temperature of the burning tobacco is not always the same! Also, gasoline
formulations vary, and so may the temperature required to ignite the
vapor.

True but irrelevant. The temperature of burning tobacco is always
enough to ignite gasoline vapors if the concentration is in the
proper range. That range will vary slightly with the formulation
of the gasoline, but not enough to be a significant factor.

What matters is the temperature of the gasoline, the temperature of
the air and how much ventilation you have. At ordinary room
temperature the concentration of the vapor above the liquid can
easily rise past the lower explosive limit. Inside a gas tank,
it will typically rise above the upper explosive limit so that
a spark inside of a gas tank may not explode it.

In the open air the concentration will not be stable but will
vary as the air circulates above the liquid.

Lots of people have been killed and houses burned down
doing exactly what some guy above did. He's an idiot
and so is anyone who believes that what he did was anything
other than extremely dangerous.
 
K

krw

Jan 1, 1970
0
My folks have a halogen lamp. When I'd visit them in the summer,
Dad would turn it on at night and the temp of room would increase
a LOT. I'd never use them; I'm too afraid of fire.

Halogens are more (about 3x more) efficient than standard tungsten
bulbs, so the room should be cooler. The fixtures can get hot
though. The halogens in standard bulb envelopes aren't hotter than
the standard bulbs.
 
Don said:
It's been my limited experience the compact fluorescents do _not_ last
as long. I have a pair of sockets for my living room that are near
each other in the ceiling (20 feet up, yes I have room for two floors
in that room.) When I first bought the place, there were two
incandescents already there. One eventually went out and I replaced
it with a compact fluorescent... twice... before the other one finally
expired (it was also incandescent.) They are on the same circuit and
attached to the same light switch so they are either both on or both
off, always.

Is this a recessed ceiling fixture? Those build up heat and are hard on
compact fluorescents. For that matter, some compact fluorescents brag
about being specifically rated to use in recessed ceiling fixtures. Such
includes the 15, 20 and non-dimmable 23 watt ones of Philips SLS series.
Philips did say that the 25 and the dimmable 23 are not rated for use in
recessed ceiling fixtures.
[snip]

I can say where and when compact fluorescents appear to me prone to
short life:

1) When on-time is short. As I hear it, "standard conditions" for life
expectancy include 3 hours per start. So I expect a fair chance of short
life expectancy compared to incandescents in motion sensor lights,
closets, restrooms used mainly for short trips, and refrigerators.

2) Higher wattage CFL in small enclosed fixture, due to heat buildup.

3) If the CFL is a problem-prone one, such as (according to my
experience) 25 watt spirals of GE and LOA brands made around 2001, LOA
45 watt ones, and LOA "Q-Lites" from the early 1990's. Also I have seen
"dollar store" ones have a significant rate of spectacular infant
mortality, as well as never achieving claimed light output (sometimes
low by a factor of 3) and sometimes not achieving stated color.

4) I hear of a few complaints of the Commercial Electric 42 watt spiral
dying young when operated base-up. I suspect the problem here is heat.

- Don Klipstein ([email protected])

I gave two post-mortems earlier in this thread. Here's another:
MODEL: Commercial Electric compact fluorescent lamp (CFL) model
ES-20, SKU 738-703, 20watt 120V 60Hz-rated.

INTERNAL CONSTRUCTION: hefty TO-220 switching transistors, mounted on
heatsinks, 105oC-rated Nichicon reservoir cap.

FINDINGS: All power semis intact & operable. Cause of death: lamp
heater failure (one of two filaments, failed open).

So, in my environment, that's three of three failures, all due to
heater fatigue, YMMV. If you find premature failures with zapped
semiconductors, I'd suspect line transients.

Note: I operate some units base-up, but bare (no enclosure) to avoid
heat buildup.

Cheers,
James Arthur
 
E

Eeyore

Jan 1, 1970
0
krw said:
[email protected] says...

Halogens are more (about 3x more) efficient than standard tungsten

3 times ? That's not my understanding. More like 1.5 times but with a better colour
temperature.

bulbs, so the room should be cooler. The fixtures can get hot
though. The halogens in standard bulb envelopes aren't hotter than
the standard bulbs.

The actual haogen bulb itself runs hotter and the other side of this is that they're
more commonly available in high wattages.

Graham
 
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