why wool is poor conductor of heat?we also use woolen clothes to get heat.
Answers
Answer:
Woolen clothes are thin and there is no much air gap between the fabric. The air pockets lying in between the fabric makes us feel warm. Wool is a poor conductor of heat and the air pockets in the fabrics prevent the passage or movement of air from the surroundings into our body. This less movement of air through the woolen fabric helps us to keep warm.
Materials made with wool are poor conductors of heat (aka good insulators) because of wool's 3-D structure. ... Because air is the real insulator. The curls of wool trap air in its three-D structure and so heat takes longer to pass through the air than through compressed materials like cotton.
As wool is a very good insulator and a poor conductor of heat, woolen clothes keep the body warm and protect it from the cold winds. Also, the air trapped between the woolen fibers prevents the flow of heat from the body to the cold surroundings. ... Thus dark, thick, woolen garments are suitable during winter.
Hope it helps