The experimenter is testing on denim, cotton T-shirt material, wool fabric,
thermal underwear, polyester fabric, and a Ziplock bag with no insulator. From
research the experimenter learned that wool is a fine soft wavy hair that forms all
or part of the protective coat of a sheep. Since ancient times it was harvested to
provide clothing and is an important part in textile trade because of its insulation.
Woolen fabric is when the woolen system uses short or mixed long and short
fiber where no combing is done. It has a rough appearance and is most suitable
for blankets, overcoats, and tweeds. Denim which the experimenter is also
testing is the material used to make blue jeans and is currently one of the world's
most popular fabrics. It is fairly heavy and is made with a blue cotton warp and a
white cotton filling (Groilers, 1996). The thermal underwear is duofold, with an
outer layer made of 65% cotton, 25% wool, and 10% nylon, and an inner layer
made of 100% cotton.
It's the winter again and the weather is becoming colder. Each morning
many people wonder what to wear to stay as warm as possible, but they aren't
sure which material will keep them warmest. The experiment was chosen to see
which clothing insulator retains the most heat. 'Insulation is material that
protects against heat, cold, electricity, or sound.' (Science Encyclopedia, 1984).
In this case the insulation will be protecting against a cold temperature.
The hypothesis is if denim, cotton T-shirt material, wool fabric, polyester
fabric, thermal underwear, and a Ziplock bag with out insulating material are
tested to see which one retains the most heat, then wool fabric will retain the
most heat because it holds an important place in today's textile trade because of