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SP 3404
HOW THINGS WORK:
PHYSIC IN EVERYDAY LIFE
Done by:DORANENTY BINTI HAJI AWG. ABDULLAH
11B8169
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HAIR DRYER
Background:
It is also known as hair blower.
It is an electrical device used to dry and style
hair.
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It uses electric fan to blow air across a heatingcoil; as the air passes through the dryer it
heats up.
When the warm air reaches wet hair it helps
evaporate the water.
Hair dryers may be used with a variety of
brushes and combs to achieve different hair
styles.
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HISTORY
In 1890, Alexandre Godefroy
invented a machine to dry
the hair.
Early models
It consisted in a metal
bonnet, that attached to a
chimney pipe of a gas stove,
blew hot air on the head.
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Early models
- Vacuums Hair Blower
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First Handheld Versions
In the early 1920s, a handheld hair dryer
made from a scaled-down motor comparable
to vacuum's was created in Germany. It washeavy and bulky, and it was also loud and not
very popular.
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Handheld hair dryers
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Helmet Dryers
Gas-heated dryers came along a decade later.However, the heat was harmful to hair and the
fumes from the gas made some clients sick, so
these hair dryers quickly went out of fashion.
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Bonnet Dryers
In the late 1950s, a portable version of the
helmet-style dryer was introduced, allowing
women to curl and dry their hair at home.It
had a bonnet similar to a shower cap attached
to the hose.
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How Does a Hair Dryer Work?
A hair dryer needs only two parts to generate
the blast of hot air that dries your hair:
- a simple motor-driven fan
- a heating element
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Physic behind the hair dryer?
Electromagnetism
brings a blow
dryer to life, by
using electricity to
heat and power a
motor fan that
consequently
produces hot air.
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References:
Bass, I., (2009). How does a hair dryer work?Retrieved
from Happy Neews website:
http://www.happynews.com/living/more-hair-
care/hair-dryer-work.htm
Bloomfield, L. A. (1997). How Things Work: The Physics
of Everyday Life. USA.
Byron, J. (1979). GCSE Steps in Physics. (1st ed.).
Oxford (NY): Oxford University Press.
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Hermes, A., (2009). The History of Hair Dryers. Retrievedfrom eHow Contributor website:
http://www.ehow.com/about_5085397_history-hairdryers.html
Mc Coy, V. (2009). Hair Dryers. Retrieved from
PowerPoint Presentation website:http://www.slideshare.net/SpringfieldEdge/victoria-mccoy-hair-dryers
Toothman, J., & O'Connell, A. M. (2000). How hair dryerswork. Retrieved from 1998-2013 HowStuffWorks, Incwebsite:http://www.physics.org/explorelink.asp?id=130&q=hair¤tpage=1&age=0&knowledge=0&item=0