it is filled with all that radiation and keeps the warmth in it
Feathers, like most forms of thermal insulation, work by trapping a layer of air. Air is a good thermal insulator, provided that it does not circulate.
It depends on the type of jacket. Some are just a coated nylon material which will not keep you warm but there are many jackets that have both a waterproof coating and a warm inside. These jackets are very versatile. I hope I could help.
No, jackets are not cloths. Jackets are clothes. You use cloths to wipe things and try dishes. You use clothes to wear to keep warm or protect the body.
Wearing jackets keep you warm i would think you would wear a jacket?
Duvets are usually filled with goose feathers which insulate you and keep you warm whilst you sleep Zzz
Tactical jackets are used for protection and to keep warm. They are most often used by the military. Other professions such as police, SWAT teams and firefighters also use these jackets.
It traps your body heat inside the bag.
it is filled with all that radiation and keeps the warmth in it
Down traps a lot of air, and air is a good insulator.
because they wore it as jackets, used it to trade and they needed it to keep them warm
Fat is insulating, so it helps keep warmth in the human body. It works the same way clothing and jackets do.
They wear heavy Jackets and heavy snow pants to keep warm
Depending on what the objects are there are a variety of ways to keep things warm. These ways include: fire, electric/gas/propane heater, blankets, electric blankets, jackets, body heat, and an incubator.