Moontanman

Whoa! Talk about passive aggressive!

I doubt that plants we grow for food would grow well enough under 0.1% Earth sunlight to feed us but nuclear power could be used for supplemental lighting.

So basically the World is turning Fascist and the only way it can be stopped is if everyone gets off their asses and do something about it... We're Fucked!

So we are all just waiting to see if the word turns fascist in few months?

An interesting tidbit here is that Sunlight on Earth is much more intense that we need to see but that the human eye is a very poor judge of light intensity. An interesting experiment is to look at a 40 watt fluorescent light bulb inside and outside in the sun. Indoors the 40 watt bulb will be almost too bright to directly look at comfortably but outdoors the 40 watt bulb will all but vanish in the sunlight. Plants need significantly less than full sunlight to grow as well, it depends on the species of plants but Earthy plants (underwater plankton) can grow and reproduce at 1% of Earth's surface light intensity. From my own hobby of growing coral I've been made aware of how important light intensity is and how bad the human eye is at judging light intensity. many under water ecological niches are defined by light intensity.

Gian, the intensity of sunlight on the Surface of Titan is about 0.1% of what we see on the surface of the Earth. https://en.wikipedia.org/wiki/Titan_(moon) As for why... You ask a question that has crossed my mind many times, I have read that the reason why Jupiter's giant moons do not have atmospheres has to do with Jupiter being being very hot in it's youth and this prevented the Galilean moons from having atmospheres. I am not really sure if this is accurate or not.

OIC what you are getting at, the dark period vs light period isn't about running photosynthesis in the dark. The length of the night controls hormonal output that controls the growth of the plant and it's seasonal growing, flowering and fruiting. My idea that is if the dark length controls these factors, ( I am shooting for 24 hours of day and 12 hours of night) slowly decreasing the length of night should trigger the growth cycle independent of the day length. At least that is my speculation.

I'm not sure what you mean by dark reactions.

What would be your point?

I have to admit that is a good one!

I don't know about you guys but to me this is one of the most interesting threads we've had in a while!

Evidently I have not been keeping up with current tech in this area, I tried to do this about 30 years ago but the timer thing was insurmountable on my budget.

Thank you, I think your suggestion might be out of my particular wheelhouse but If I can't figure out a way to turn lights off and on on a 36 hour schedule of 12 hours of dark and 24 hours of light over the course of months this maybe my only recourse.

🦇 bat... 💩 shit... 🤪 crazy!

Thanks, I have done some checking at various local stores and all I could find were timers based on 24 hour days, I'll have to look closer

In the culture of plants via artificial light I have read in a book on indoor gardening that the day length is not what controls plant growth and flowering but the length of darkness associated with the day is what triggers plant growth. This opens up the idea of how long does the darkness have to be and how long can the day length be and not affect the growth, maturity, and fruiting of the plants being cultured. 12 to 10 hours of darkness is necessary to trigger the plant growth/flowering/fruiting but would this still work if you used a 12/24 lighting cycle with e day being 24 hours and the night being 12 to 10 hours to trigger fruiting. If this is true, and I have researched it a bit and found no real info on this, (it was a rather light search) could a such a day night cycle allow for less light intensity being as effective as a more intense light over less time? So many trade offs here, I wish i had the ability to experiment with this, I am thinking of a small terrarium in a dark closet but where would you get a timer you could use to make the light cycle? Most if not all commercial timers are based on a 24 hour day length, I'm not sure how to get hold of a timer based on a 36 hour day. Any suggestions for a plant small enough to mature in a ten gallon aquarium?

Sometimes i wonder if I've lived far too long... 🦇💩🤪

Now that is funny!

I wasn't trying to say it was, but adults do have to adjust their lives to the school times and this is the real driver to this. Adults have fewer options, employers are not particularly welcoming to changing their business hours to make it easier for adults to get their kids safely to school. Parents are expected to change their lives to suit employers than the other way around. Yes some jobs can be done from home but most cannot and most blue collar workers are expected to change their lives to suit their employers. This question is more complex than most think, IMHO DST is more trouble than it's worth, in the summer if I want more daylight I'll simply get up earlier, I love to surf fish, getting down to the beach, setting up my equipment just before daybreak is an option I use with some regularity. If you are not free to decide what time you start your day then regular time would seem to be a good guide. Anytime you try to change something everyone relies on you will piss off some of the people to please some of the people.

After reading several posts in this thread I wonder how many commenting have kid schedules, and or work schedules, I may be misreading this but everyone does understand that the time changes for everyone not just the school kids... right? The main problem with dst is that the sun pays little to no attention to human clocks, while time changes do concern us and they should, I worked for DuPont, rotating shifts, I changed my schedule every 7 days and the only way I could deal with it was to live like I was on the same schedule as everyone else or to be more precise I had to live like my shift was always 8 to 4, I ate, slept, and worked as though I was always on day shift. I slept, ate, and worked as though every day started at 8am even though it could be 4pm or 12am. If the sun followed DST there would be no problem and no conflicts other than the ones we already have, if not for the Sun's lack of cooperation shifting back an hour should have no problems. Actually changing the time of school, work, or other activities would create problems for everyone... initially anyway. If we really wanted to maximize daylight activities then we would have to actually change the time we start our days and probably on a sliding scale as the seasons progressed. In the past we changed our work schedules with the sun, we got up with the sun and went inside when the sun went down if not go directly to bed, we knew the day length changed as the seasons progressed but we changed with it instead of trying to change the time. It seems to me at this point that DST as we know it now is the lesser of two evils in trying to fix this "problem" all the talk of starting school late or changing work schedules or relying on neighbors to take care of your kids is just not tenable in the real world. I feel you dude, SAD is a big part of winter life for me, I feel like I need to crawl in a hole and sleep for weeks... Goa?

The main problem was children waiting in the dark for school busses but the danger of standing on the side of the road in the dark in rural areas was real and why the winter DST was cancelled. There was a lot of discussion about this in my area many years ago, in the winter the sun rises much later than it does in the summer resulting in children getting up well before daylight. I'm not sure if this could result in sleep cycle disruptions but the difference in getting up before sunrise was disruptive, I was part of a group that supported the DST for the winter and I had to change my mind and go with EST in my paper to the school board. To me the children's safety was paramount and long bus rides in rural areas won the day for EST.

DST, in the winter, causes students to have to wait in the dark for the school bus in the mornings.

Good question, I have no idea, I was not asserting that we need to be looking into it but knowing the curiosity of humans I would be surprised if no one has looked into it.

The difference between how and why is how our technological civilization was formed, how is always important, why is often nothing but a subjective desire.