Home Tech Essay -- essays research papers

The Toilet Yes...those tales youve heard atomic number 18 true.The toilet was first procure in England in 1775,invented by one Thomas Crapper, but the pyrotechnic automatic device call(a)ed the flushtoilet has been around for a dour time. LeonardoDa Vinci in the 1400s designed one that worked,at to the lowest degree on paper, and Queen Elizabeth I reputablyhad one in her castling in Richmond in 1556,complete with flushing and overflow pipes, a stadiumvalve and a drain trap. In all versions, ancient andmodern, the working article of faith is the same.Tripping a single lever (the handle) sets in motion aseries of actions. The trip handle lifts the seal,usually a rubber flapper, allowing water supply system to flowinto the bowl. When the tank is n primal empty, theflap falls bet on in place over the water extinctlet. Afloating ball falls with the water level, opening thewater supply int poleuction valve just as the outlet is beingclosed. Water flows through the bowl refill provideinto the overflow pipe to replenish the trap sealingwater. As the water level in the tank nears the topof the overflow pipe, the float closes the inletvalve, completing the cycle. From the oldest ofgad requires in the bathroom, lets turn to one of thenewest, the toothpaste pump. Sick and tired oftoothpaste squeezed all over your s sign andfaucets? Does your spouse never ever roll passthe tube and continually squeezes it in the middle?Then the toothpaste pump is for you When you bring up the button it pushes an internal, grooved roddown the tube. Near the bottom of the rod is apiston, supported by little metal flanges called"dogs", which seat themselves in the grooves onthe rod. As the rod moves down, the dogs slideout of the groove theyre in and click into the oneabove it. When you release the button, the springbrings the rod back up carrying the piston with it,now seated one notch higher. This pushesone-notchs-worth of toothpaste out of the nozzle.A measured amount of toothpaste every time andno more than goo on the sink. Refrigerators Over 90percent of all trade union American homes withelectricity have refrigerators. It seems to be theone appliance that join Americans can just notdo without. The machines popularity as a victualspreserver is a relatively recent phenomenon,considering that the principles were known asearly as 1748. A liquid absorbs heat from itssurroundings when it evaporates into a atom smasher a gasrelease... ...alone are sold every day in North America. Inkfeeds by gravity through quintette veins in a meander cone,usually made of brass, to a atomic number 74 carbide ball.During the writing process, the ball rotates, pickingup a continuous ink supply through the nose coneand transferring it to the writing paper. The ball isa perfect sphere, which must fit precisely into theextremely smooth nose cone socket so that it willrotate guiltlessly yet be held tightly in place so thatthere is an even ink flow. Although it soundsdeceptively simple, perhaps the most amazingthing about ball-point pens is the ink. why doesntit just run out the end? Why doesnt it dry up in theplastic cartridge? Bic describes the ink as"exclusive, fast-drying, yet free flowing". Theformula is, of course, secret. In the 19th century,writer and thinker Ralph Waldo Emerson explicit a fear that perhaps we all feel to someextent, that "things are in the saddle and rideMankind". But with the help of right householdreference books, friendly reference librarians, andhelpful manufacturers only too willing to helpconsumers understand their products, we can atleast get a rein on the technology in our homes.