because it can keep heat in because it is thick and good for insulation
Cotton And Wool
cotton wool
cotton wool
wool is a insulator
Cotton wool is not a conductor or an insulator it is a semi conductor. It is sort of in the middle, electrons can travel through cotton wool but not as good as silver, bronze, metal and so on.
Cotton wool has a very low density and has thousands of pockets to trap air in. Because of this, cotton wool is a good insulator, but there are others that are better. As a rule of thumb, the lower the density, the better the insulator. There are virtually no exceptions to this.
wool holds lot of air.air being bad conductor of heat make the wool a good conductor of heat.
yes and no it depends on what wool and what you want to insulate ?
wool i think.
it is a good insulator because its a warm and keeps heat in by trapping it with air
No because water is a good conductor of heat in comparison to wool.
Heat insulation would be wool. Note that denim is normally made of cotton, or a cotton/polyester blend. None of them would be very good electrical insulation when wet.