Mostly they would be water droplets which may be because of rainfall, morning dew (condensation) or irrigation.
water droplets.
The moisture droplets in the air refract the light like a prism. This happens with millions of droplets, and depending on the angle at which you observe it, you see a rainbow.
how do droplets become heavy enogh so that the droplets fall as rain and snow
As long as the sun is behind you in a clear patch of sky and the air in front of you is loaded with water droplets.
A double rainbow is not unusual but is often too faint to be noticed. A rainbow is caused by sunlight refracting and reflecting in water droplets. If the light is reflected twice in the droplets, there will be a second rainbow outside the first. It will be fainter and the order of the colors will be reversed. Whenever you see a rainbow, look carefully to see if there is a second one right above it.
Due to surface tension, all the rain drops do not flow away or awash from the leaves and few drops remain dangling....
tiny droplets of water will appear inside the bag.these tiny droplets are due to transpiration from leaves.
I have this same problem, sappy-stick water droplets form on the back of the leaves and they die within a few days. Any advice?
Evaporation
Because of the adhesion
be cues it tiny water droplets
water droplets.
Evaporation, that's why it needs to be facing the sun
This is most likely perspiration. Perspiration occurs when excess water from the plant is evaporated by the heat or light, and is carried into the air, but since the produce is bagged, the only place the water can go is on the top of the bag, which is why the water droplets form there.
Transpiration gives out water vapour which condenses at night because of low temperature.
The moisture coming out of the leaves.
because u cant see