sp 3404 assignment 1

7/29/2019 SP 3404 Assignment 1

1/15

SP 3404

HOW THINGS WORK:

PHYSIC IN EVERYDAY LIFE

Done by:DORANENTY BINTI HAJI AWG. ABDULLAH

11B8169


2/15

HAIR DRYER

Background:

It is also known as hair blower.

It is an electrical device used to dry and style

hair.


3/15

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.


4/15

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.


5/15

Early models

- Vacuums Hair Blower


6/15

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.


7/15

Handheld hair dryers


8/15

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.


9/15

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.


10/15Various Hair dryers


11/15

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


12/15


13/15

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.


14/15

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.


15/15

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&currentpage=1&age=0&knowledge=0&item=0

sp 3404 assignment 1

Documents