in a way, lumpyren's right (even though he could be a bit more tactful).
The LED will have a tighter viewing angle than the candle (360° compared to the 20°of the LED), which is more useful. Therefore, the LED will appear to be brighter than the candle.plus a candle will give off more energy in heat than in light.
So why not use the heat as your energy source!? - genius
Nice Demo of the thermal electric effect using a peltier
Sorry but your claim of "more light than the candle" is bunk. Proof is right there on your hand. The Led light does not cast on your hand while the candle does.
I am assuming before you made the claim you tested it with a lumen meter? what is the lumens per sq foot output of a candle compared to that led?
lumens per SQ foot please, not point source lumens. The candle provides a 360 degree by 270 degree sphere of light and is not a point source.
The claim is that the LED produces a higher intensity (W m^-2) than the candle.
"light many times the intensity of the candle"
This is probably true within the beam of the LED - indeed, one could drive a laser diode and have an intensity many orders of magnitude higher than that of the candle!
This is redundantly awesome.
PhotonFossil 4 months ago
Well, yea. Hook this up to the headlights in your car.
Niko2100 4 months ago
this would be a clever spin on those old lanterns that uses a flame.
kakureru 4 months ago
would also work well on a wood stove.
How well does it fair against the inevitable candle soot that builds up?
kakureru 4 months ago
Wow. Nice job on this. =)
peorthwb 4 months ago
"Suprock Technologies has created a thermoelectric generator" you mean you took a Peltier chip, soldered an led and attached a CPU heatsink to it?
AMAZING I did this for my 6th grade science fair...
Joshuab213 4 months ago
@Joshuab213 want me to scratch your head for you? cos I think i can just reach if i open the window!
wouse101 4 months ago
I'm hot happy with the thermal design of this. Convective cooling requires vertical fins.
hboy007 4 months ago
This is a very cool project. I think the candle puts a lot more energy in the IR band than the LED. It does beg the basic questions:
1. Is there more energy in the heat produced in a candle flame than in the light it produces? (I suspect maybe yes...)
2. If the candle light were focused to the same radiation pattern as the Cree X-Lamp would the luminous energy be higher?
I would not want to speculate on the latter, but it would be an interesting bake-off.
WO1U 4 months ago
in a way, lumpyren's right (even though he could be a bit more tactful).
The LED will have a tighter viewing angle than the candle (360° compared to the 20°of the LED), which is more useful. Therefore, the LED will appear to be brighter than the candle.plus a candle will give off more energy in heat than in light.
So why not use the heat as your energy source!? - genius
Nice Demo of the thermal electric effect using a peltier
wouse101 4 months ago
but will it blend?
danjulification 4 months ago
Comment removed
watson516 4 months ago
Sorry but your claim of "more light than the candle" is bunk. Proof is right there on your hand. The Led light does not cast on your hand while the candle does.
I am assuming before you made the claim you tested it with a lumen meter? what is the lumens per sq foot output of a candle compared to that led?
lumens per SQ foot please, not point source lumens. The candle provides a 360 degree by 270 degree sphere of light and is not a point source.
lumpyren 4 months ago 2
@lumpyren
The claim is that the LED produces a higher intensity (W m^-2) than the candle.
"light many times the intensity of the candle"
This is probably true within the beam of the LED - indeed, one could drive a laser diode and have an intensity many orders of magnitude higher than that of the candle!
The original claim, I think, is legitimate.
jrcgarry 4 months ago
Comment removed
lumpyren 4 months ago
a nice thing to have in a zombie-apocalypse-survival-set
kiwisaft 4 months ago
nice
liezliezliez 4 months ago