Topic: remember when myth busters busted the myth that turning on a light bulb uses more energy than normo
Anonymous A started this discussion 7 years ago #78,110
i didn't even know that was a myth
Anonymous B joined in and replied with this 7 years ago, 9 minutes later[^] [v] #912,556
Oh I thought this was true
So is it always better to turn the light off even if you're planning to come back to the room soon?
So is it always better to turn the light off even if you're planning to come back to the room soon?
Sheila LaBoof joined in and replied with this 7 years ago, 1 minute later, 10 minutes after the original post[^] [v] #912,557
yeah I recall it is advised to not bother with considering wear on the bulb from switching or whatever if it's going to be off for more than I don't know, 5 minutes or some made up number
Anonymous D joined in and replied with this 7 years ago, 23 minutes later, 34 minutes after the original post[^] [v] #912,565
I remember hearing this about fluorescent lights in offices and classrooms. I have no idea if it's more or less true for incandescent or fluorescent lights. I can't imagine it would matter for LED bulbs at all.
Anonymous E joined in and replied with this 7 years ago, 12 hours later, 12 hours after the original post[^] [v] #912,680
@912,557 (Sheila LaBoof)
@previous (D)
That Mythbusters is one example of a poorly done episode. Measuring the energy at start up does prove fluorescent lights use a Burst of lots of Energy at start up. That is for a fraction of one second. Over a 3 minute plus period that burst of energy is inconsequential.
The wear on a incandescent, is from Cold turn on to fully hot. It's a mechanical component that will cause it to eventually fail. Leaving it on forever will produce a much longer life then multiple turn on's and off's. If it's on a dimmer the life for multiple turn on's and off's is greatly extended.
@previous (D)
That Mythbusters is one example of a poorly done episode. Measuring the energy at start up does prove fluorescent lights use a Burst of lots of Energy at start up. That is for a fraction of one second. Over a 3 minute plus period that burst of energy is inconsequential.
The wear on a incandescent, is from Cold turn on to fully hot. It's a mechanical component that will cause it to eventually fail. Leaving it on forever will produce a much longer life then multiple turn on's and off's. If it's on a dimmer the life for multiple turn on's and off's is greatly extended.
Anonymous F joined in and replied with this 7 years ago, 22 minutes later, 13 hours after the original post[^] [v] #912,684
@previous (E)
unrelated but related..
why do they even make 40 watt bulbs...you can hardly light a room with them..
unrelated but related..
why do they even make 40 watt bulbs...you can hardly light a room with them..
Anonymous G joined in and replied with this 7 years ago, 57 seconds later, 13 hours after the original post[^] [v] #912,685
That's enough guys.
Anonymous H joined in and replied with this 7 years ago, 6 minutes later, 13 hours after the original post[^] [v] #912,688
Anonymous I joined in and replied with this 7 years ago, 9 minutes later, 13 hours after the original post[^] [v] #912,696
@912,684 (F)
> why do they even make 40 watt bulbs
Useful for backlighting while viewing video-tv etc.
> why do they even make 40 watt bulbs
Useful for backlighting while viewing video-tv etc.
Anonymous F replied with this 7 years ago, 1 minute later, 13 hours after the original post[^] [v] #912,698
Anonymous I replied with this 7 years ago, 3 minutes later, 13 hours after the original post[^] [v] #912,700
Anonymous H replied with this 7 years ago, 4 minutes later, 13 hours after the original post[^] [v] #912,704
Anonymous I replied with this 7 years ago, 4 minutes later, 13 hours after the original post[^] [v] #912,707
@912,700 (I)
Perhaps you are losing your eyesight. Anon F said
> they were produced before video was common..
Modern versions continue to be produced. Must be a market for them. I bought several recently which was a mistake because a local store at Christmas was giving them away as a gift.
Perhaps you are losing your eyesight. Anon F said
> they were produced before video was common..
Modern versions continue to be produced. Must be a market for them. I bought several recently which was a mistake because a local store at Christmas was giving them away as a gift.
Anonymous F replied with this 7 years ago, 3 minutes later, 13 hours after the original post[^] [v] #912,710
Anonymous J joined in and replied with this 7 years ago, 8 minutes later, 13 hours after the original post[^] [v] #912,714
@previous (F)
Possible a brand with design defect off loading them quickly. Odd thing about LED's. White light runs from blueish to yellowish. To many shades of off white in my opinion.
Possible a brand with design defect off loading them quickly. Odd thing about LED's. White light runs from blueish to yellowish. To many shades of off white in my opinion.
MR MIKE PENCE joined in and replied with this 7 years ago, 16 seconds later, 13 hours after the original post[^] [v] #912,715
Anonymous I replied with this 7 years ago, 1 minute later, 14 hours after the original post[^] [v] #912,717
Sheila LaBoof replied with this 7 years ago, 2 minutes later, 14 hours after the original post[^] [v] #912,720
@912,680 (E)
I should have mentioned that energy cost versus light bulb cost was the concern that I recall (not from the Mythbusters, somewhere else)
I should have mentioned that energy cost versus light bulb cost was the concern that I recall (not from the Mythbusters, somewhere else)
Sheila LaBoof double-posted this 7 years ago, 2 minutes later, 14 hours after the original post[^] [v] #912,723
@912,684 (F)
> unrelated but related..
>
> why do they even make 40 watt bulbs...you can hardly light a room with them..
it's also nice if don't want to excite your nerves too much ever, and use a more powerful light only for special purposes when needed
> unrelated but related..
>
> why do they even make 40 watt bulbs...you can hardly light a room with them..
it's also nice if don't want to excite your nerves too much ever, and use a more powerful light only for special purposes when needed
Anonymous G replied with this 7 years ago, 7 minutes later, 14 hours after the original post[^] [v] #912,731
That's enough I said.
Anonymous A (OP) replied with this 7 years ago, 16 minutes later, 14 hours after the original post[^] [v] #912,734
@912,680 (E)
> That Mythbusters is one example of a poorly done episode. Measuring the energy at start up does prove fluorescent lights use a Burst of lots of Energy at start up. That is for a fraction of one second. Over a 3 minute plus period that burst of energy is inconsequential.
>
> The wear on a incandescent, is from Cold turn on to fully hot. It's a mechanical component that will cause it to eventually fail. Leaving it on forever will produce a much longer life then multiple turn on's and off's. If it's on a dimmer the life for multiple turn on's and off's is greatly extended.
i believe the busters before syntax even though I don't really remember the episode or making this thread
> That Mythbusters is one example of a poorly done episode. Measuring the energy at start up does prove fluorescent lights use a Burst of lots of Energy at start up. That is for a fraction of one second. Over a 3 minute plus period that burst of energy is inconsequential.
>
> The wear on a incandescent, is from Cold turn on to fully hot. It's a mechanical component that will cause it to eventually fail. Leaving it on forever will produce a much longer life then multiple turn on's and off's. If it's on a dimmer the life for multiple turn on's and off's is greatly extended.
i believe the busters before syntax even though I don't really remember the episode or making this thread
Anonymous A (OP) double-posted this 7 years ago, 21 seconds later, 14 hours after the original post[^] [v] #912,735
Svet !jzYkdX7lIw joined in and replied with this 7 years ago, 4 minutes later, 14 hours after the original post[^] [v] #912,738
As an electrician and lighting tech... this is true for domestic lamps but it does take more current to strike an LED than it does to sustain it.
Anonymous E replied with this 7 years ago, 1 minute later, 14 hours after the original post[^] [v] #912,739
@912,734 (A)
https://www.vanderbilt.edu/sustainvu/2006/12/the-discovery-channels-mythbusters-test-the-effects-of-turning-off-the-lights/
https://www.vanderbilt.edu/sustainvu/2006/12/the-discovery-channels-mythbusters-test-the-effects-of-turning-off-the-lights/
Anonymous E double-posted this 7 years ago, 5 minutes later, 14 hours after the original post[^] [v] #912,740
@912,738 (Svet !jzYkdX7lIw)
> As an electrician and lighting tech... this is true for domestic lamps but it does take more current to strike an LED than it does to sustain it.
The LED itself uses the same exact inrush current as the running current. Unfortunately the miniature switched mode power supply that decreases the Main lines 240 or 110 voltage to the very small LED voltage necessary has a spike inrush. In the future that can be reduced greatly.
> As an electrician and lighting tech... this is true for domestic lamps but it does take more current to strike an LED than it does to sustain it.
The LED itself uses the same exact inrush current as the running current. Unfortunately the miniature switched mode power supply that decreases the Main lines 240 or 110 voltage to the very small LED voltage necessary has a spike inrush. In the future that can be reduced greatly.