What Are The Kind Of Job In The High Latitud

Since compasses have limited value at high latitudes, how were planes able to navigate on polar routes prior to the advent of GPS? I first heard of GPS in 1979 as a coming technology. I knew planes flew polar routes when I was a child in the 60s.

Joe Shelton got it. Prior to Area Navigation (GPS, etc.) and INS, it was done via Ded (short for “Deduced”) Reckoning, using Celestial Navigation and Pilotage when necessary and as backups. Not many airplanes did polar flights “back in the day” but there were some. I’ve never done it without GPS, but when I was flying in Alaska I did know some guys who did it, and they used to tell stories about it.The real issue is the magnetic pole. Navigation depends upon knowing your heading, and before GPS, etc. the magnetic compass was King. There is a sort of “dead zone” around the magnetic pole where you can’t really trust the compass, so the goal was to get through that zone without any real-time heading reference. Enter the Directional Gyro (DG)…As long as it’s not slaved, a DG is a great tool for getting through the dead zone. You get a good heading set up, unslave your DG, and then fly through the dead zone using your DG to maintain a constant relative heading, flying a straight line across the earth, plotted out on a chart (polar projection). The heading won’t be accurate, but it will be steady, not accounting for the gradual precession of the DG. After flying for your one or two hours on your DG, you’re exiting the dead zone and you can get a new bearing to magnetic north, re-slave your DG, and get back on a real heading. You’ll also get a rough idea of how far off course you are. :)

Is the reason winter is colder than summer similar to the reason poles (and higher latitudes) are colder than equator (and lower latitudes)?

Original Question -Is the reason winter is colder than summer similar to the reason poles (and higher latitudes) are colder than equator (and lower latitudes)?Thanks for the A2A. And the answer is sort of, since both are caused by the fact that the axis of rotation of our little rock and the plane that the rock follows about the sun are not the same. The axis of rotation is at an angle of about 23 degrees with respect to the plane of revolution.If you think about it, that causes all sorts of issues with the exposure to the sun's warming rays, both from a distance perspective, because our revolution is not at a constant distance from the sun, but also because the length of our day will vary.At high latitudes it will go from 24 hours to 0 hours. Where I live it varies from about 8 hours now to 16 hou6rs in June.

How do people who live at high latitudes, such as Finland and Norway, cope with the darkness in winter?

My light therapy lamp works miracles. I no longer even try to manage without it.Vitamin D is necessary, too.Snow is the traditional solution that wonderfully illuminates our dark world. It also enables us to enjoy darkness by making lanterns of snow or ice.(Photo source: Joulu - Tunturisuden Joulusivut)(Photo source: Jäälyhty tuo tunnelmaa talviseen puutarhaan)Unfortunately, climate change has turned our winters wetter and less white, which has impacts on mental health. One more reason to tackle climate change!Christmas coincides with the pagan midwinter festival, and for a reason: we who live here near the Arctic Circle really need some (de)light in the darkest time of the year, something to look forward to, something to celebrate.Traditionally it meant candle light, and that’s something I love to brighten my winters with. During the Advent, many people have candelabra with four candles, and as Advent progresses we light one more candle each week.(Photo source: Adventtikynttelikkö - 1. luukku)Nowadays it means that cities are decorated with Christmas lights since the end of November. Psychologically many people find it important, just like the many ways in which we celebrate Christmas weeks beforehand, including the workplace parties at the end of November and drinking lots of delicious glögi.[1]For me personally, something as simple as listening to Christmas music makes a difference, too. I used to sing in a children’s choir as a kid, and we started to practice our Christmas program already in October. As much as I dislike the commercial Christmas music that stores seem to start playing earlier each year that passes, I love the other kind of Christmas music: Medieval, simple, full of ancient light.Something like this:In many ways, cherishing darkness with these kinds of lovely details can be quite special and relaxing.Thanks for asking, Janie!Footnotes[1] Glögi - Wikipedia

Which planes fly at a very high altitude and leave stream of cloud behind? Are they passenger aircrafts or some military aircraft?

Most modern commercials jets cruise at an altitude of 10 to 15 Kms. The phenomena of white trails or contrails of smoke behind the Jet aeroplanes is mostly seen during winters when the temperatures at such altitudes are very low, and these remain in the sky for a long time, when temperature is low. White smoke is nothing but the condensed form of water vapour, which gets out through the exhaust of the aircraft engines and gets condensed when it comes in contact with cold atmosphere outside. In fact the compressors of aircraft jet engines suck the atmospheric air, which gets mixed up with the fuel in the combustion chamber, gets  ignited there which provides the Thrust (power) to the aircraft. Burnt out gases are then exited in the form of exhaust by the rotation of the turbine.  These burnt out gases also contain some form of moisture (Traces of Water). When the outside atmospheric temperature is low, the water gets condensed and appear like a white smoke. Number of trails seen behind the aircraft will depend upon the number of engines present in the aircraft. If there are four engines; four trails will be seen and with two engines, two trails will be seen;

How do Muslims fast in extreme latitudes?

If a Muslim lives in a city where it is extremely hot, it is still obligatory on him to fast, if he has the ability to do so. He who fears for himself of falling ill as a result of fasting is not required to fast. Nor is he who believes that fasting would worsen his poor state of health in any way, be it hampering his recovery or increasing his pain. This should, however, be commensurate with what is generally accepted in these circumstances. If he fears that fasting might harm him, it is permissible to break his fast. And if his illness continues until the next Ramadhan, Qadha is not obligatory but he should give 750 grams of food (wheat, flour or bread or any kind of food) for each day to poor Shiites.As for a patient whose health is not affected by fasting, he must fast and his fasting is in order.

Is there any high reach equipment to repaint high rise buildings?

Telescopic boom lifts are available to reach at least as high as 185 feet, as pictured below. That’s high enough to cover many “high rise buildings”.However, most tall buildings are designed with provisions to mount crane davit arms on the roof, which can be used to lower access platforms for repainting as well as window washing and other types of maintenance. If available, this will probably be cheaper and easier to work with.Image via The latest from JLG Industries