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Breaking the myth: Incandescent bulbs don't last
#11
RE: Breaking the myth: Incandescent bulbs don't last
We do not use incandescent bulbs in our home. We use those spiraly ones. But those fuckers break too.
Disclaimer: I am only responsible for what I say, not what you choose to understand. 
(November 14, 2018 at 8:57 pm)The Valkyrie Wrote: Have a good day at work.  If we ever meet in a professional setting, let me answer your question now.  Yes, I DO want fries with that.
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#12
RE: Breaking the myth: Incandescent bulbs don't last
I don't like the spirally ones. They never seem bright enough.
(August 21, 2017 at 11:31 pm)KevinM1 Wrote: "I'm not a troll"
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Hammy Wrote:and we also have a sheep on our bed underneath as well
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#13
RE: Breaking the myth: Incandescent bulbs don't last
They eventually get bright enough. I think they are designed to gradually brighten after they are turned on.

Damn. That sounded dirty. LOL
Disclaimer: I am only responsible for what I say, not what you choose to understand. 
(November 14, 2018 at 8:57 pm)The Valkyrie Wrote: Have a good day at work.  If we ever meet in a professional setting, let me answer your question now.  Yes, I DO want fries with that.
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#14
RE: Breaking the myth: Incandescent bulbs don't last
I am designed to gradually brighten once I am turned on.


On a serious note, I don't know why. I try not to leave lights on. I can't see myself waiting around for one to get bright enough. Sound like a pain.
(August 21, 2017 at 11:31 pm)KevinM1 Wrote: "I'm not a troll"
Religious Views: He gay

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Hammy Wrote:and we also have a sheep on our bed underneath as well
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#15
RE: Breaking the myth: Incandescent bulbs don't last
(January 15, 2016 at 7:17 am)Alex K Wrote: Just some things that come to mind concerning your calculation -
It is conceivable that the 200W bulb will draw a bit more than 60W (i.e.  (120/220)^2 times the power) at reduced voltage because the resistance will be noticeably lower at the new operating point as compared to 200W. Also, it is possible that the 200W bulb running with 60W will have lower filament temperature than a regular 60W bulb, thus reducing the efficiency in visible light, so there might be a trade off between longevity and efficiency. Those are just ideas, I don't know how big these effects are.

p.s. standard voltage has been 230V for some time now, at least in Germany

Yeah you're right about that - the filament resistance is variable to heat, therefore instead of 59.5W it could draw say 62W or something like, it's difficult to know exactly without running a measured test. What it won't be, however, is any less than 59.5W since heat increase the resistance in the filament.
For Religion & Health see:[/b][/size] Williams & Sternthal. (2007). Spirituality, religion and health: Evidence and research directions. Med. J. Aust., 186(10), S47-S50. -LINK

The WIN/Gallup End of Year Survey 2013 found the US was perceived to be the greatest threat to world peace by a huge margin, with 24% of respondents fearful of the US followed by: 8% for Pakistan, and 6% for China. This was followed by 5% each for: Afghanistan, Iran, Israel, North Korea. -LINK


"That's disgusting. There were clean athletes out there that have had their whole careers ruined by people like Lance Armstrong who just bended thoughts to fit their circumstances. He didn't look up cheating because he wanted to stop, he wanted to justify what he was doing and to keep that continuing on." - Nicole Cooke
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#16
RE: Breaking the myth: Incandescent bulbs don't last
Heat increases the resistance of the filament?
Are you sure? That sounds a bit counter-intuitive, to me... heat should promote electron mobility, thus leading to less resistivity.... Confused
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#17
RE: Breaking the myth: Incandescent bulbs don't last
Some materials increase with resistance with heat while others decrease.

A cold filament has only about 1/8 the resistance of a hot one or even less, depending on the specific filament. When an incandescent lamp is first turned on, there is a huge current surge which lasts a fraction of a second until the temperature spikes up.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

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#18
RE: Breaking the myth: Incandescent bulbs don't last
What doesn't change, however, is the efficiency. It still produces the same amount of heat and light per Watt consumed.
For Religion & Health see:[/b][/size] Williams & Sternthal. (2007). Spirituality, religion and health: Evidence and research directions. Med. J. Aust., 186(10), S47-S50. -LINK

The WIN/Gallup End of Year Survey 2013 found the US was perceived to be the greatest threat to world peace by a huge margin, with 24% of respondents fearful of the US followed by: 8% for Pakistan, and 6% for China. This was followed by 5% each for: Afghanistan, Iran, Israel, North Korea. -LINK


"That's disgusting. There were clean athletes out there that have had their whole careers ruined by people like Lance Armstrong who just bended thoughts to fit their circumstances. He didn't look up cheating because he wanted to stop, he wanted to justify what he was doing and to keep that continuing on." - Nicole Cooke
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#19
RE: Breaking the myth: Incandescent bulbs don't last
Yes, but reducing the voltage reduces the watts consumed, which reduces the temperature of the same filament radiating surface, which shifts the emission further to the infrared, which means it puts out even lower light to heat ratio.

Incidentally, there is a recent report of the successful proving of concept of a super incandescent bulb which promise to put out 40% of its total power draw in visible light. Such a bulb would be much more efficient than even LEDs.

The basic idea is this bulb wraps the filament in a nanotech manufactured shell that reflects IR but is transparent to visible light. Only visible light gets through the shell. Most IR is reflected back to the filament, where it is re-absorbed and the re-radiated at a slightly higher average frequency, thus extracting a few visible light photons from pure IR photons. The shell itself is much larger than the filament, remains cool, and radiates comparatively little IR to the outside.
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#20
RE: Breaking the myth: Incandescent bulbs don't last
I just got this thing floating above my head that constantly glows.
I don't have an anger problem, I have an idiot problem.
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