So my thoughts until been told this "science fact" were light converted to photosynthesis (no matter how small that is) is been used as that and not turned to heat.
Incorrect, photosynthesis is a biological process and almost, if not all biological processes are exothermic, meaning they absorb energy, from whatever source, light or sugar or…. And convert it to an energy they can use. Some is used directly to eventually put off heat for one reason or another and some is lost due to the conversion factor since no conversion is perfect, in the form of guess what….. drum roll please, YEP, you guessed it, HEAT.
For purposes of this discussion, we're only considering the characteristics of the electrical circuit, not what happens to the photons after they are created.
But you can’t, because they are there. They are eventually consumed and converted to heat. Eat a bunch of candy bars full of sugar (energy) and go outside and run around the block a hundred times and come back and swear to me that you never increased your temperature, that you aren’t hotter after than before. You can’t dismiss a variable just because it wasn’t in the original equation. It counts.
Since it's indoors and we're taking ambient temperature readings, I suggest we use closed system assumptions.
Exactly.
Yeah, forget all that bollocks, but do not disregard the fact that the plants are using the light, therefore some is Not being turned into heat
Incorrect, it IS being converted into heat eventually, biological processes are mostly exothermic. Do the sugar trick above if you don’t believe me.
Light hitting leaves also turns to heat; in this case, transpiring water into vapor and cooling the plant.
uhhhhh, YEP. biological process equals exothermic reaction.
It all ends up as heat eventually. The reason that we need heatsinks on the led array is because they are not 100% efficient at turning input energy into light. So however efficient they are, the rest gets turned into heat. And the more inefficient they are (driven harder) the more heatsink area you need. But like others have said 600w in = 600w heater pretty much.
The reason that some users can get their tent cooler is because they are getting the same amount of usable light from their newer lower wattage light that produces the same amount of light that their higher wattage lower efficiency light did.
You can't take away energy that you put into a system, it has to go somewhere. It ends up as heat.
Yes.
Yes, yes, yes, yes, yes.
Entropy, it’s a law. Thermodynamics, these are laws.
Energy for the functioning of an ecosystem comes from the Sun. Solar energy is absorbed by plants where in it is converted to stored chemical energy.
YES, which is then in turn therefore converted to heat. Plants don’t store energy infinitely, they use it to grow. A biological process which……..dah ta da dah….. is exothermic (as all or most are). Seeing a pattern here?
These plants will eventually die with a certain amount of stored energy, be it chemical or otherwise, as will we. However, neither will die having stored up every bit of energy ever taken in. Can you imagine dying with every gram of sugar fat your body ever stored not having had to use it for biological processes? Being as fat as you would be if every single calorie you ever consumed still hanging on to the vessel. Do the sugar trick above and I dare you not to “lose weight” or sweat.
Also, I would like to apologise for distracting from your thread with the whole "all light turns to heat eventually" debate.
As do I sir. My apologies. It is at least slightly relevant, but I am looking forward to the results more. I am conducting my research in advance of a purchase and I need all the data I can muster.
Light is energy, not heat (despite what the grow boss says). Energy can be converted into work or heat. In the case of photosynthesis, it is used to produce sugars and O2 from light, CO2, and H2O. That is work. Any energy used to produce work doesn't necessarily produce heat (a chem reaction could be endothermic).
All energy eventually becomes heat. Which in turn is eventually absorbed by the system (universe on the grand scale). I think all work is exothermic, I think endothermic rxns require work as input in order to proceed, absorbing the heat from the system, you have to provide energy, ususally in the form of heat. That is what I took away from all my chem classes. Biology is mostly exothermic. Throw some ammonium nitrate in water and it gets cold and absorbs heat from the system, I do not think this rxn would happen at all in the complete absence of heat, absolute zero, as there would be no heat to absorb, besides, it wouldn’t be water anyway. I mean yes it would be H2O, but it wouldn’t exactly be in an easily reactable liquid state. It would have the same formula as water just not the same state.
if you convert energy into work, the work passes that energy along as friction, resistance, impact, w/e, most of which dissipate as heat....you can't win....the law is the law....if it goes in, it comes out. ask any physics teacher. if you put 100 watts into a light, its going to come out as 100 watts of heat. i'm really not trying to be a dick, or even argue. i realize it sounds wrong, but its right, and until you accept that, you'll never get the math right. try putting a 1000 watts worth of cobs in an area that had a 1000 watt hps in it, wait a few hours, and see what happens. its easily provable if you have the equipment. the test with the black spot above was invalid, unless you want to know the temperature of a black spot. if they would have put an ambient thermometer in that space and waited long enough, they would have read the same.
as photons degrade, they turn into heat...even the wind from your fans eventually turns back into heat....
yeah, goddamnit, what he said. I gotta get past this and quit this shit and get on to the point of the thread. I’m about to buy a light. What light should I buy for a 5x5x6 tent for flower? That’s why I came here looking, damnit, not to get caught up in this wonderfully perplexing education. FM.
Man it sucks to scroll past all these stupid posts about heat just don't buy led if you think hps is just as cool...the end back to growing please
And here my dumbass is bringing it back up again. FMA.