So can sound, almost as if anything with energy can move or excite particles. In other news scientist discovers water is wet.
Light can make water evaporate without heat
141–150 of 198 posts
Re: Light can make water evaporate without heat
#142Earlier quoted context omitted.
You’re thinking about it right if you’re zoomed into the surface of the water plus a few millimeters above it. But the molecule clusters themselves evaporate after that, which pulls heat from the air.
Gotcha. That heat from the air is also energy input that has to be counted, so it still would equal out in the end, right?
Re: Light can make water evaporate without heat
#143Basically green is apparently a great wavelength to evaporate water at. Interesting
Re: Light can make water evaporate without heat
#144Earlier quoted context omitted.
I imagine the leaves being green would encourage this evaporation. The upper layers of cells are probably effectively translucent and might be awash in green light, perhaps increasing the rate of evaporation and improving overall transpiration.
That’s my guess as well. The green chlorophyll is inside of the cell. It absorbs sunlight for food but reflects the green light back through the water-air boundary. Perhaps the effect on evaporation or water movement provides a better benefit for the plant than absorbing the energy of that spectra. For instance, by increasing the efficiency of respiration.
Re: Light can make water evaporate without heat
#145> The researchers found that the effect varied with color and peaked at a particular wavelength of green light. I wonder if this affects photosynthesis in any way? IIRC plants are green because chlorophyll does not absorb that color. Maybe that’s partially because green light induces too much evaporation?
Re: Light can make water evaporate without heat
#146Earlier quoted context omitted.
Gotcha. That heat from the air is also energy input that has to be counted, so it still would equal out in the end, right?
Exactly
Thank you, I've got a little clearer view of my world.
Re: Light can make water evaporate without heat
#147So why is this news?
Re: Light can make water evaporate without heat
#148So can sound, almost as if anything with energy can move or excite particles. In other news scientist discovers water is wet.
Sound would literally mean waves of kinetic energy hitting both the surface of the water and traveling inside it. Does that really count as "without heat"?
Re: Light can make water evaporate without heat
#149I must be missing something. My ice cubes in my freezer evaporate with no light and no heat. My understanding of the situation was the surrounding air was pulling off moisture because of some sort of osmosis effect. So why is this news?
Re: Light can make water evaporate without heat
#150Earlier quoted context omitted.
Well, the chloroplast was evolved when all life forms were submerged in the sea
The sea is on the other side of a very carefully policed barrier.