incorrect. they are actually evidence of the lizard king's devious plan to poison the entire planet's population with mind bending drugs to keep us all docile and subserviant and... sorry got to go someone's at the doorGelsons Dad said:Yes.
The white lines are condensation trails or "con trails" the conditions required to create the trails are a quite narrow range of temperature and humidity. In the right conditions the trails will be formed by the water vapour from the engine exhaust adding to the water content in the atmosphere and pushing the value over the local saturation point. The saturation point changes with temperature and pressure. However the atmosphere isn't constant. There is a standard model called the international Standard Atmosphere or ISA and in aviation we refer to temperature (and therefore density altitude) with reference to ISA. So I may look at my Outside Air Temperature at 30,000ft and see that it's -45C this would be about standard. It would equate to a sea level temperature of +15.However, it's not unusual to find yourself in ISA -10 or ISA + 10 at medium altitudes (below the tropopause). This not only effects the performance of the engines but also along with the humidity whether or not con trails are formed and how long they last. As the altitudes that the aircraft fly are pretty standard then on some days at those altitudes the right conditions will exist and on others they wont. Hence some days lots of trails which last for hours and other days none.
I've flow across the atlantic following another aircrafts trail all the way and on other days seen none. Some times they last for hours and other times they brake up quickly. Some times they can form into a row of doughnuts which looks cool
DirtyEddie said:incorrect. they are actually evidence of the lizard king's devious plan to poison the entire planet's population with mind bending drugs to keep us all docile and subserviant and... sorry got to go someone's at the doorGelsons Dad said:Yes.
The white lines are condensation trails or "con trails" the conditions required to create the trails are a quite narrow range of temperature and humidity. In the right conditions the trails will be formed by the water vapour from the engine exhaust adding to the water content in the atmosphere and pushing the value over the local saturation point. The saturation point changes with temperature and pressure. However the atmosphere isn't constant. There is a standard model called the international Standard Atmosphere or ISA and in aviation we refer to temperature (and therefore density altitude) with reference to ISA. So I may look at my Outside Air Temperature at 30,000ft and see that it's -45C this would be about standard. It would equate to a sea level temperature of +15.However, it's not unusual to find yourself in ISA -10 or ISA + 10 at medium altitudes (below the tropopause). This not only effects the performance of the engines but also along with the humidity whether or not con trails are formed and how long they last. As the altitudes that the aircraft fly are pretty standard then on some days at those altitudes the right conditions will exist and on others they wont. Hence some days lots of trails which last for hours and other days none.
I've flow across the atlantic following another aircrafts trail all the way and on other days seen none. Some times they last for hours and other times they brake up quickly. Some times they can form into a row of doughnuts which looks cool
buzzer1 said:ElanJo said:[bigimg]http://upload.wikimedia.org/wikipedia/commons/d/da/Jerusalem_night_7088.JPG[/bigimg]
Look familiar?
?????
BulgarianPride said:buzzer1 said:?????
I assume he is pointing to the reflection from the gold roof of the church. Or simply to the way the lights appear. It's that or he is pointing to the alien taking a shit near the window at the bottom of the picture.
are you feeling alright buzzer? its not like you to fly off the handle like thatbuzzer1 said:Look look everyone, look at me trying to be funny and coming out with the same old pathetic unfunny stuff that i always have done, now get me an ice lolly or i'll scweam and i'll scweam and i'll scweam.
You are just showing yourself up to be the little woman you are, a childish little woman that would get a dig in and run off or kick you on the floor and mince off back into the safety of the crowd, Diedre bwahahaha.
buzzer1 said:Look look everyone, look at me trying to be funny and coming out with the same old pathetic unfunny stuff that i always have done, now get me an ice lolly or i'll scweam and i'll scweam and i'll scweam.
You are just showing yourself up to be the little woman you are, a childish little woman that would get a dig in and run off or kick you on the floor and mince off back into the safety of the crowd, Diedre bwahahaha.
malg said:buzzer1 said:Look look everyone, look at me trying to be funny and coming out with the same old pathetic unfunny stuff that i always have done, now get me an ice lolly or i'll scweam and i'll scweam and i'll scweam.
You are just showing yourself up to be the little woman you are, a childish little woman that would get a dig in and run off or kick you on the floor and mince off back into the safety of the crowd, Diedre bwahahaha.
WOW....that's strong!