In 1946, the engineer Dr. Percy LeBaron Spencer, who worked for the Raytheon Corporation, was working on magnetrons. One day at work, he had a candy bar in his pocket, and found that it had melted. He realized that the microwaves he was working with had caused it to melt. After experimenting, he realized that microwaves would cook foods quickly - even faster than conventional ovens that cook with heat.
Picture of Original Microwave Oven Patent by Doctor Percy L. Spencer
Courtesy Rod Spencer and the Spencer Family Archives
2.A laptop (notebook)[1][2] is a personal computer for mobile use.[3][4][5] A laptop integrates most of the typical components of a desktop computer, including a display, a keyboard, a pointing device (a touchpad, also known as a trackpad, and/or a pointing stick) and speakers into a single unit. A laptop is powered by mains electricity via an AC adapter, and can be used away from an outlet using a rechargeable battery. A laptop battery in new condition typically stores enough energy to run the laptop for three to five hours, depending on the computer usage, configuration and power management settings. When the laptop is plugged into the mains, the battery charges, whether or not the computer is running.
Portable computers, originally monochrome CRT-based and developing into the modern laptop, were originally considered to be a small niche market, mostly for specialized field applications such as the military, accountants and sales representatives. As portable computers became smaller, lighter, and cheaper and as screens became larger and of better quality, laptops became very widely used for all sorts of purposes.
3.A Dishwasher is a mechanical device for cleaning dishes and eating utensils. Dishwashers can be found in restaurants and private homes.
Unlike manual dishwashing, which relies largely on physical scrubbing to remove soiling, the mechanical dishwasher cleans by spraying hot water, typically between 55 to 75 °C (130 to 170 °F) at the dishes, with lower temperatures used for delicate items. A mix of water and detergent is used for cleaning purposes, followed by clean water to remove the detergent residue. Some dishwashers have multiple wash and rinse periods within the complete cycle. In some dishwashers, a rinsing aid (also called rinse aid) can be added to the rinse cycle to improve drying and avoid water spots remaining on dry items.
4.Fridge (band)
are an English post-rock band, comprising school friends Kieran Hebden, Adem Ilhan, and Sam Jeffers. Initially Hebden played guitar, Ilhan bass, and Jeffers drums, but Hebden and Ilhan soon adopted a variety of other instruments, and by 1999's Eph the sampler was playing an increasingly important role in the group's music. Hebden, Ilhan and Jeffers all attended Elliott School in Putney, which has become regarded as a hotbed for musical talent; other notable alumni including Hot Chip, Burial and The xx - all of which members of Fridge have worked with.
Hebden began a solo career in the late 1990s under the name Four Tet while the other two members attended college. Ilhan has also released three solo albums, Homesongs (2004), Love and Other Planets (2006), and Takes (2008) under the name Adem. The band's fifth album (and first in six years), The Sun, was released in June 2007.
The three musicians have also worked on occasion as the backing band for Badly Drawn Boy, and remixed his single Another Pearl.
Fridge also played their first public gig in six years, at Bardens Boudoir in Dalston, London on 9 August 2007. They followed this up with a performance at the 2007 Field Day festival in Victoria Park, London.
5.Hair dryer is an electromechanical device designed to blow cool or hot air over wet or damp hair, in order to accelerate the evaporation of water particles and dry the hair. Blowdryers allow to better control the shape and style of hair, by accelerating and controlling the formation of temporaryhydrogen bonds inside each strand. These hydrogen bonds are very powerful (allowing for stronger hair shaping than even the sulfur bonds formed bypermanent waving products), but are temporary and extremely vulnerable to humidity. They disappear with a single washing of the hair.Hairstyles using blowdryers usually have volume and discipline, which can be further improved by the use of styling products and hairbrushes during drying to add tension, hold and lift.
Blowdryers were invented around the end of the 19th century. The first model was created by Alexander Godefroy in his salon in France in 1890. The handheld, household hair-dryer first appeared in 1920. Blowdryers are used both in the beauty salon by professional stylists, and in the average household by consumers.
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