1. Introduction By: ADream Dewitt Townes Period 8/9
“The Refrigerator”
Introduction
By: ADream Dewitt Townes
Period 8/9

2. Introduction The refrigerator : First named or called The Icebox
Something that was created many years ago
Became one of he greatest inventions of all times
Used to preserve and to store items
At first used to just keep things cold
Now to freezes as well, and we cant live without

3. The Inventor
There were more than a few inventors that filed patents for the invention of the refrigerator.
In 1880 there were over 3000 patents
However William Cullen invented the process in 1748
The first inventor of the refrigerator was known to be Oliver Evans in 1805 (never built)
Jacob Perkins invented more practical improvements in (built it)

4. Refrigeration before refrigerator
The process of removing heat from an enclosed space, or from a substance, to lower its temperature
Uses the evaporation of a liquid to absorb heat
There were many ways to create refrigeration
Maryland engineer named Thomas Moore thought of the name refrigerator
wasn't until 1911, however, that General Electric introduced a true home refrigerator

5. Before the refrigerator and refrigeration
Before it, there was the icebox
A large wood box, often made of oak or walnut
Did not run on electric or any coolant
The Chinese were reportedly the first to create blocks of ice about 1000 BCE.
Was the size of modern refrigerator
Internal wired shelves held the food.

6. timeline BC-1700 = involved cutting and storing ice for refrigeration
1720 – 1918 = continuously remakes of the refrigerator among different ways
1918 = refrigerator purchased by General Motors and renamed Frigidaire
1918 Electro-Automatic Refrigerating Company renamed Kelvinator
1920 = by then there was almost 200 refrigerator on the market
1927 first refrigerator to see widespread use was the General Electric (G.E) "Monitor-Top" refrigerator.

7. Timeline (continuation)
1930 first built-in refrigerator is launched by Electrolux
1937 more than 2 million Americans owned refrigerators.
1939 refrigerator with one section for frozen food and a second for chilled food, introduced by G. E
1947 GE two-door refrigerator-freezer combination
% of American homes now have refrigerators
2005 A domestic refrigerator is present in 99.5% of American homes

8. Area of interaction Human Ingenuity
Human ingenuity allow people to focus on the evolution, process and products of human creativity and their impact on life and society.
The refrigerator invention, have a great impact on society. We people all use it in everyday life. Which was created by a human. Later on inspired for other people to recreate it and to make it better.
In this way, human ingenuity goes beyond the act of creation alone, leading students to examine, experience and reflect on the creative process

9. summary The refrigerator is a very good invention as of today
Before mechanical refrigeration systems were introduced, people cooled their food with ice and snow, either found locally or brought down from the mountains.
Now there are many different refrigerator, brought from many different store, shipped from many different warehouses. Now people cool and freeze their food and beverages with the science of technology.

10. Pictures

11. Pictures (continuation)

12. Citation
rigerator.htm
igerator.htm
the-refrigerator.html
igerator.aspx
umaningenuity/