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Airconditioner - PowerPoint PPT Presentation

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Airconditioner . Who :Willis Haviland Carrier What : for cooling of indoor air for thermal comfort; can refer to any form of cooling, heating, ventilation, or disinfection that modifies the condition of air. Where : Buffalo, New York When : 1902

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Who:WillisHaviland Carrier

What: for cooling of indoor air for thermal comfort; can refer to any form of cooling, heating, ventilation, or disinfection that modifies the condition of air.

Where: Buffalo, New York

When: 1902

Why: His design cool the air and regulate humidity as well.

How: it helps stabilize the air temperature and humidity within an area.


Who: Paul Gottlieb Nipkow

What: a telecommunication medium for transmitting and receiving moving images that can be monochromatic (shades of grey) or multicolored. Images are usually accompanied by sound. "Television" may also refer specifically to a television set, television programming, television transmission.

Where: Germany

When: 1884

Why: source of entertainment

How: controlled by a remote or by its buttons

Electronic rice cooker
ELECTRONIC Rice cooker

Who: Yoshitada Minami

What: is a container or kitchen appliance for cooking rice.

Where: Japan

When: 1945

Why: Cooking rice has traditionally been a process which required attention to ensure the rice was cooked properly. Once the rice cooker is set to cook, the rice will be cooked with no further attention.

How: Although the rice cooker does not necessarily speed up the cooking process, with an electric rice cooker the cook's involvement in cooking rice is reduced to simply measuring the rice, preparing the rice properly and using the correct amount of water.


Who: Dr. Percy Lebaron Spencer

What: used in households and in industry and commerce

Where: Waltham, Massachusetts

When: 1946

Why: much more efficient at heating food than conventional ovens and therefore use less energy.

How: Refrigeration, process of lowering the temperature and maintaining it in a given space for the purpose of chilling foods, preserving certain substances, or providing an atmosphere conducive to bodily comfort..


Who: Guglielmo Marconi

What: Radio is the transmission of signals through free space by modulation of electromagnetic waves with frequencies below those of visible light

Where: Italy

When: (1874-1937),

Why: radio waves of different lengths are employed for different purposes and are usually identified by their frequency.

How: Buttons re used to look for a desired station