UncleBuck
Well-Known Member
proper humidity levels make for happy plants.
have fun drying your shit too quickly and having grass that smells like grass instead of dank.
does hobby lobby practice christian values?
- Thread starter UncleBuck
- Start date
have fun drying your shit too quickly and having grass that smells like grass instead of dank.
NLXSK1
Well-Known Member
So you are growing your plants inside the house and have to keep the humidity up to 50%?? LOL!!! No wonder your house looks like a barn...
NLXSK1
Well-Known Member
I am not drying my shit, I am buying my shit. It is what someone with a job can afford to do... Shocking, I know!!
UncleBuck
Well-Known Member
moist soil and lots of biomass are what keep the humidity that high in that one room.
UncleBuck
Well-Known Member
have fun paying $10 or more per gram for some shitty weed.
i think i'll stick to growing mine for about $2 a gram and have better quality weed to boot.
burgertime2010
Well-Known Member
Heat must be a factor.
UncleBuck
Well-Known Member
keep the house at about 72 degrees with the swamp cooler. veg room is down in the basement though, so it's a little cooler down there. stays about 78 in the veg room with over 1000 watts of CFLs ant T8s on 24/7.
burgertime2010
Well-Known Member
I mean that the hotter air is able to hold more water.
UncleBuck
Well-Known Member
that's true too.
just checked the humidity upstairs where the baby chicks are, 28% and 74 degrees.
burgertime2010
Well-Known Member
go up to 80 then.
heckler73
Well-Known Member
Hotter air holds more water? Are you sure? 
http://www.ems.psu.edu/~fraser/Bad/BadClouds.html
Bad Meteorology:
The reason clouds form when air cools is because
cold air cannot hold as much water vapor as warm air.
Cumulus cloud over Vancouver, Canada
When moist air cools, a cloud can form. This much is true. The process is responsible for the cumulus cloud over Vancouver and the cap cloud over Rainier, shown to the right. Ascending air always cools. The cumulus cloud formed when air over the sun-warmed ground became buoyant and rose; the cap cloud, when the wind (coming from the right) blew against the sloping side of the mountain and was forced up.
But did the clouds form because the colder air had a lower holding capacity for water vapor than the warm air? If you believe a legion of teachers (from grade school to university), TV weather broadcasters, and endless textbook writers, this is the reason. They speak of the air being saturated and one even published an illustration of the air being wrung out like a sponge as the temperature dropped (sigh...). Unfortunately, it is not true. Sure, a cloud may form as the temperature drops, but not because some mystical holding capacity of the air has decreased.
Cap cloud over Mt. Rainier, U.S.A
To claim that a temperature-dependent holding capacity of the air caused the cloud to form in cold air is to get (approximately) the right answer for the wrong reason. It is like trying to reduce the fraction, 19/95, by imagining that you can cancel the 9s. The right answer ensues, but for the wrong reason. And, if the process was wrong, it is unlikely to work the next time you try it in a slightly different situation.
The air (mainly nitrogen and oxygen) no more has a holding capacity for water vapor, than, say, water vapor has for nitrogen. The atmosphere is a mixture of gases. While saturation (which involves bonds between different molecules) is a real phenomenon in liquids it does not describe the interaction of atmospheric constituents.
So, what is going on?
Water molecules are constantly coursing back and forth between phases (another word for the three states: vapor, liquid, and solid). If more molecules are leaving a liquid surface than arriving, there is a net evaporation; if more arrive than leave, a net condensation. It is these relative flows of molecules which determine whether a cloud forms or evaporates, not some imaginary holding capacity that nitrogen or oxygen have for water vapor.
The rate at which vapor molecules arrive at a surface of liquid (cloud drop) or solid (ice crystal) depends upon the vapor pressure.
The rate at which vapor molecules leave the surface depends upon the characteristics of the surface. The number escaping varies with:
And therein lies the origin of the myth. The temperature of a cloud droplet or ice crystal will be (nearly) the same as that of the air, so people imagine that somehow the air was to blame. But, if the (other gases of the) air were removed, leaving everything else the same, condensation and evaporation would proceed as before (the air was irrelevant to the behavior). To assign the behavior of water to an invented holding capacity of the air is like assigning your life's fortunes to an invented influence of the constellations (and as we all know, nobody does that anymore).
http://www.ems.psu.edu/~fraser/Bad/BadClouds.html
Bad Meteorology:
The reason clouds form when air cools is because
cold air cannot hold as much water vapor as warm air.
Cumulus cloud over Vancouver, Canada
When moist air cools, a cloud can form. This much is true. The process is responsible for the cumulus cloud over Vancouver and the cap cloud over Rainier, shown to the right. Ascending air always cools. The cumulus cloud formed when air over the sun-warmed ground became buoyant and rose; the cap cloud, when the wind (coming from the right) blew against the sloping side of the mountain and was forced up.
But did the clouds form because the colder air had a lower holding capacity for water vapor than the warm air? If you believe a legion of teachers (from grade school to university), TV weather broadcasters, and endless textbook writers, this is the reason. They speak of the air being saturated and one even published an illustration of the air being wrung out like a sponge as the temperature dropped (sigh...). Unfortunately, it is not true. Sure, a cloud may form as the temperature drops, but not because some mystical holding capacity of the air has decreased.
Cap cloud over Mt. Rainier, U.S.A
To claim that a temperature-dependent holding capacity of the air caused the cloud to form in cold air is to get (approximately) the right answer for the wrong reason. It is like trying to reduce the fraction, 19/95, by imagining that you can cancel the 9s. The right answer ensues, but for the wrong reason. And, if the process was wrong, it is unlikely to work the next time you try it in a slightly different situation.
The air (mainly nitrogen and oxygen) no more has a holding capacity for water vapor, than, say, water vapor has for nitrogen. The atmosphere is a mixture of gases. While saturation (which involves bonds between different molecules) is a real phenomenon in liquids it does not describe the interaction of atmospheric constituents.
Water molecules are constantly coursing back and forth between phases (another word for the three states: vapor, liquid, and solid). If more molecules are leaving a liquid surface than arriving, there is a net evaporation; if more arrive than leave, a net condensation. It is these relative flows of molecules which determine whether a cloud forms or evaporates, not some imaginary holding capacity that nitrogen or oxygen have for water vapor.
The rate at which vapor molecules arrive at a surface of liquid (cloud drop) or solid (ice crystal) depends upon the vapor pressure.
The rate at which vapor molecules leave the surface depends upon the characteristics of the surface. The number escaping varies with:
- the phases involved --- molecules can escape from liquid more readily than from the solid (ice);
- the shape of the boundary --- molecules escape more readily from highly curved (small) drops or ice crystals (convex);
- the purity of the boundary --- foreign substances dissolved in the liquid or ice diminish the number of water molecules which can escape;
- the temperature of the boundary --- at higher temperatures the molecules have more energy and can more readily escape.
And therein lies the origin of the myth. The temperature of a cloud droplet or ice crystal will be (nearly) the same as that of the air, so people imagine that somehow the air was to blame. But, if the (other gases of the) air were removed, leaving everything else the same, condensation and evaporation would proceed as before (the air was irrelevant to the behavior). To assign the behavior of water to an invented holding capacity of the air is like assigning your life's fortunes to an invented influence of the constellations (and as we all know, nobody does that anymore).
burgertime2010
Well-Known Member
Hotter air holds more water? Are you sure?
http://www.ems.psu.edu/~fraser/Bad/BadClouds.html
Bad Meteorology:
The reason clouds form when air cools is because
cold air cannot hold as much water vapor as warm air.
Cumulus cloud over Vancouver, Canada
When moist air cools, a cloud can form. This much is true. The process is responsible for the cumulus cloud over Vancouver and the cap cloud over Rainier, shown to the right. Ascending air always cools. The cumulus cloud formed when air over the sun-warmed ground became buoyant and rose; the cap cloud, when the wind (coming from the right) blew against the sloping side of the mountain and was forced up.
But did the clouds form because the colder air had a lower holding capacity for water vapor than the warm air? If you believe a legion of teachers (from grade school to university), TV weather broadcasters, and endless textbook writers, this is the reason. They speak of the air being saturated and one even published an illustration of the air being wrung out like a sponge as the temperature dropped (sigh...). Unfortunately, it is not true. Sure, a cloud may form as the temperature drops, but not because some mystical holding capacity of the air has decreased.
Cap cloud over Mt. Rainier, U.S.A
To claim that a temperature-dependent holding capacity of the air caused the cloud to form in cold air is to get (approximately) the right answer for the wrong reason. It is like trying to reduce the fraction, 19/95, by imagining that you can cancel the 9s. The right answer ensues, but for the wrong reason. And, if the process was wrong, it is unlikely to work the next time you try it in a slightly different situation.
The air (mainly nitrogen and oxygen) no more has a holding capacity for water vapor, than, say, water vapor has for nitrogen. The atmosphere is a mixture of gases. While saturation (which involves bonds between different molecules) is a real phenomenon in liquids it does not describe the interaction of atmospheric constituents.
So, what is going on?
Water molecules are constantly coursing back and forth between phases (another word for the three states: vapor, liquid, and solid). If more molecules are leaving a liquid surface than arriving, there is a net evaporation; if more arrive than leave, a net condensation. It is these relative flows of molecules which determine whether a cloud forms or evaporates, not some imaginary holding capacity that nitrogen or oxygen have for water vapor.
The rate at which vapor molecules arrive at a surface of liquid (cloud drop) or solid (ice crystal) depends upon the vapor pressure.
The rate at which vapor molecules leave the surface depends upon the characteristics of the surface. The number escaping varies with:
- the phases involved --- molecules can escape from liquid more readily than from the solid (ice);
- the shape of the boundary --- molecules escape more readily from highly curved (small) drops or ice crystals (convex);
- the purity of the boundary --- foreign substances dissolved in the liquid or ice diminish the number of water molecules which can escape;
- the temperature of the boundary --- at higher temperatures the molecules have more energy and can more readily escape.
And therein lies the origin of the myth. The temperature of a cloud droplet or ice crystal will be (nearly) the same as that of the air, so people imagine that somehow the air was to blame. But, if the (other gases of the) air were removed, leaving everything else the same, condensation and evaporation would proceed as before (the air was irrelevant to the behavior). To assign the behavior of water to an invented holding capacity of the air is like assigning your life's fortunes to an invented influence of the constellations (and as we all know, nobody does that anymore).
burgertime2010
Well-Known Member
easy turbo.
heckler73
Well-Known Member
But...but....vroom?
I'm sorry. I just stumbled into this thread and got excited when I saw something remotely "sciency". I'll back away slowly now.
burgertime2010
Well-Known Member
I hear ya, it is interesting. I thought it was because heat increases the level at which the water molecule is excited.
sheskunk
Well-Known Member
CFL's. lol
UncleBuck
Well-Known Member
i actually retired the metal halides i had because the plants respond better to CFL.
MH was keeping them a little too short for my likes and internode spacing was too tight, which made trimming later a bigger pain in the ass.
with CFLs, they grow a little lankier which works for my growing style.
after they establish roots as clones in the tray, i transplant and let them get really tall in 18 oz dixie cups with little sidebranching at first. then they get topped hard (and the tops used as clones) when they get transplanted to N1 containers.
that's when they really start to sidebranch out. after a week or two, i usually prune and chuck the bottom 3-5 branches, leaving 4-6 really nice branches up top. those develop until it's time for flowering.
the end result is a nice bare stem for the first 12 inches or so and a vigorous bunch of tops which go crazy once they get under the HPS. after about a week or so in flower, after they stretch and get the "neckbeard" look and i start to remove any useless plant material too low down on the plant.
the end result is a beautiful canopy, no popcorn buds, and no wasted light. efficiency is key in indoor growing.
Hotter air does indeed hold more humidity, your entire post has to do with clouds, not humidity.Hotter air holds more water? Are you sure?
http://www.ems.psu.edu/~fraser/Bad/BadClouds.html
Bad Meteorology:
The reason clouds form when air cools is because
cold air cannot hold as much water vapor as warm air.
Cumulus cloud over Vancouver, Canada
When moist air cools, a cloud can form. This much is true. The process is responsible for the cumulus cloud over Vancouver and the cap cloud over Rainier, shown to the right. Ascending air always cools. The cumulus cloud formed when air over the sun-warmed ground became buoyant and rose; the cap cloud, when the wind (coming from the right) blew against the sloping side of the mountain and was forced up.
But did the clouds form because the colder air had a lower holding capacity for water vapor than the warm air? If you believe a legion of teachers (from grade school to university), TV weather broadcasters, and endless textbook writers, this is the reason. They speak of the air being saturated and one even published an illustration of the air being wrung out like a sponge as the temperature dropped (sigh...). Unfortunately, it is not true. Sure, a cloud may form as the temperature drops, but not because some mystical holding capacity of the air has decreased.
Cap cloud over Mt. Rainier, U.S.A
To claim that a temperature-dependent holding capacity of the air caused the cloud to form in cold air is to get (approximately) the right answer for the wrong reason. It is like trying to reduce the fraction, 19/95, by imagining that you can cancel the 9s. The right answer ensues, but for the wrong reason. And, if the process was wrong, it is unlikely to work the next time you try it in a slightly different situation.
The air (mainly nitrogen and oxygen) no more has a holding capacity for water vapor, than, say, water vapor has for nitrogen. The atmosphere is a mixture of gases. While saturation (which involves bonds between different molecules) is a real phenomenon in liquids it does not describe the interaction of atmospheric constituents.
So, what is going on?
Water molecules are constantly coursing back and forth between phases (another word for the three states: vapor, liquid, and solid). If more molecules are leaving a liquid surface than arriving, there is a net evaporation; if more arrive than leave, a net condensation. It is these relative flows of molecules which determine whether a cloud forms or evaporates, not some imaginary holding capacity that nitrogen or oxygen have for water vapor.
The rate at which vapor molecules arrive at a surface of liquid (cloud drop) or solid (ice crystal) depends upon the vapor pressure.
The rate at which vapor molecules leave the surface depends upon the characteristics of the surface. The number escaping varies with:
- the phases involved --- molecules can escape from liquid more readily than from the solid (ice);
- the shape of the boundary --- molecules escape more readily from highly curved (small) drops or ice crystals (convex);
- the purity of the boundary --- foreign substances dissolved in the liquid or ice diminish the number of water molecules which can escape;
- the temperature of the boundary --- at higher temperatures the molecules have more energy and can more readily escape.
And therein lies the origin of the myth. The temperature of a cloud droplet or ice crystal will be (nearly) the same as that of the air, so people imagine that somehow the air was to blame. But, if the (other gases of the) air were removed, leaving everything else the same, condensation and evaporation would proceed as before (the air was irrelevant to the behavior). To assign the behavior of water to an invented holding capacity of the air is like assigning your life's fortunes to an invented influence of the constellations (and as we all know, nobody does that anymore).
DonAlejandroVega
Well-Known Member
Boyle was sure........good enough for meHotter air holds more water? Are you sure?
http://www.ems.psu.edu/~fraser/Bad/BadClouds.html
Bad Meteorology:
The reason clouds form when air cools is because
cold air cannot hold as much water vapor as warm air.
Cumulus cloud over Vancouver, Canada
When moist air cools, a cloud can form. This much is true. The process is responsible for the cumulus cloud over Vancouver and the cap cloud over Rainier, shown to the right. Ascending air always cools. The cumulus cloud formed when air over the sun-warmed ground became buoyant and rose; the cap cloud, when the wind (coming from the right) blew against the sloping side of the mountain and was forced up.
But did the clouds form because the colder air had a lower holding capacity for water vapor than the warm air? If you believe a legion of teachers (from grade school to university), TV weather broadcasters, and endless textbook writers, this is the reason. They speak of the air being saturated and one even published an illustration of the air being wrung out like a sponge as the temperature dropped (sigh...). Unfortunately, it is not true. Sure, a cloud may form as the temperature drops, but not because some mystical holding capacity of the air has decreased.
Cap cloud over Mt. Rainier, U.S.A
To claim that a temperature-dependent holding capacity of the air caused the cloud to form in cold air is to get (approximately) the right answer for the wrong reason. It is like trying to reduce the fraction, 19/95, by imagining that you can cancel the 9s. The right answer ensues, but for the wrong reason. And, if the process was wrong, it is unlikely to work the next time you try it in a slightly different situation.
The air (mainly nitrogen and oxygen) no more has a holding capacity for water vapor, than, say, water vapor has for nitrogen. The atmosphere is a mixture of gases. While saturation (which involves bonds between different molecules) is a real phenomenon in liquids it does not describe the interaction of atmospheric constituents.
So, what is going on?
Water molecules are constantly coursing back and forth between phases (another word for the three states: vapor, liquid, and solid). If more molecules are leaving a liquid surface than arriving, there is a net evaporation; if more arrive than leave, a net condensation. It is these relative flows of molecules which determine whether a cloud forms or evaporates, not some imaginary holding capacity that nitrogen or oxygen have for water vapor.
The rate at which vapor molecules arrive at a surface of liquid (cloud drop) or solid (ice crystal) depends upon the vapor pressure.
The rate at which vapor molecules leave the surface depends upon the characteristics of the surface. The number escaping varies with:
- the phases involved --- molecules can escape from liquid more readily than from the solid (ice);
- the shape of the boundary --- molecules escape more readily from highly curved (small) drops or ice crystals (convex);
- the purity of the boundary --- foreign substances dissolved in the liquid or ice diminish the number of water molecules which can escape;
- the temperature of the boundary --- at higher temperatures the molecules have more energy and can more readily escape.
And therein lies the origin of the myth. The temperature of a cloud droplet or ice crystal will be (nearly) the same as that of the air, so people imagine that somehow the air was to blame. But, if the (other gases of the) air were removed, leaving everything else the same, condensation and evaporation would proceed as before (the air was irrelevant to the behavior). To assign the behavior of water to an invented holding capacity of the air is like assigning your life's fortunes to an invented influence of the constellations (and as we all know, nobody does that anymore).
