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2012年2月17日星期五

The Inventor of Modern Refrigeration

Born on June 11, 1842 in Berndorf, Germany, an engineer named Carl Paul Gottfried von Linde came up with an idea that led to the invention of the refrigerator.


His studies of a continuous process of liquefying gases in large quantities served as the basis for the refrigeration technology. He was able to complete his work in 1876.


Before the invention of the fridge, cellars were provided with packed snow and ice to cool food and serve as a not so modern refrigeration system.


Today most of us have our own refrigerators at home. We have grown accustomed to its presence. But what exactly is refrigeration and what is the science behind a refrigerator that makes it work that way?


What is refrigeration?


Refrigeration is the process of lowering temperature by removing heat from an enclosed space or substance.


How does a refrigerator work?


It's all about the nature of physics. Through compression, a liquid undergoes a rapid evaporation. The rapid expansion of vapors requires kinetic energy. The vapors get energy from immediate surroundings, thus, the area loses energy and becomes cool. This process is the primary basis of today's refrigeration system.


Many devices have inspired our modern refrigerator before it was successfully done as a safe cooling appliance at home. In 1748, William Cullen demonstrated the first know artificial refrigeration at the University of Glasgow, but did not apply it to any practical purposes.


Oliver Evans, an American inventor, designed the first refrigeration machine in 1805. The use of ether was used in the first practical refrigerating system introduced by Jacob Perkins in 1834.


In 1844, an American physician named John Gorrie made a refrigerator for his patients with yellow fever through the use of ice to cool the air inspired by the design of Oliver Evan(1844).


Carl Paul Gottfried von Linde came up with the idea of liquefying gas later.


There were also parts of the refrigerator history where such chemicals were used only to find out they were too dangerous to use. From the late 1800's until 1929, ammonia(NH3), methyl chloride(CH3CL), and sulfur dioxide(SO2) were used as refrigerants.


Fatal accidents happened due to these chemicals. Further research led to the utilization of Freon for compressor refrigerators. It was later found out that these chlorofluorocarbons endangered the ozone layer.


Through the advancement of modern cooling systems, people enjoy the convenience of food preservation without the arduous effort of someone in history long before the invention of refrigerators, given much appreciation, of course, to Carl von Linde with his precious scientific ideas that produced the advent of more effective refrigerators.


Carl von Linde died at the age of 92 in 1934. He had been awarded three Honorary Doctorates, Bavarian crown achievement medal. He was also honored with elevation to personal nobility status among many other honors.


We owe a lot to Carl von Linde. From the simple kitchen fridge to giant walkin coolers and freezers, Carl von Linde helps us keep our food fresh even today!

2012年1月14日星期六

The actual Technology At the rear of Bulbs

A lot more than 20 researchers tend to be recognized to possess separately spearheaded tasks towards creation of the operating lamp in the earlier 1800's via Jones Alva Edison's achievement from the past due 1870's. Mister Humphry Davy, Bill Robert Grove, Frederik de Moleyns, Watts. At the. Staite, Steve Daper, Ed Grams. Shepard, Heinrich Gobel, D. de Chagny, Steve Capital t. Method, Alexander de Lodyguine, Frederick Wilson Swan yet others might with each other end up being considered the actual Dads from the Lamp, even though Edison's initiatives led to the actual lastly recognized operating edition. Within the pre-Civil Battle period, the actual competition to produce electrical gentle had been much like the current passionate quest for Web systems. 1 creator didn't standalone within illumination idea after that, being an creator isn't exclusively accountable for the actual development associated with internet programs right now. However, the reason behind Edison's expansion since the recorded creator from the lamp isn't attributable completely in order to their development, a lot regarding their medical procedure.

Inventing A lot more than Only a Lamp

All the very first illumination scientists understood which electrical power might be utilized to produce a dependable as well as handy source of light, however not one experienced mixed the best methods as well as programs to create background. While some proved helpful faithfully to produce taken gentle, Edison halted in order to very first assess their own function towards the actual creation as well as create a arrange for creation. He or she had been most likely the majority of prosperous as well as famous for this reason structured method of the actual innovative procedure that received much more obvious as well as energetic outcomes.

Within chasing after electrical gentle, Edison employed their own innovative task administration technique including a talented group, the official as well as handled investigation lab, funding, resources as well as supplies inside a two-pronged work associated with each assessment from the problems associated with other people as well as integration associated with their team's development. This method which Edison produced within their pursuit of a functional lamp has become generally known as "research as well as improvement, inch the actual crucial very first stage in a main medical creation procedure. Edison didn't simply style the light, however came the street chart with regard to creators to follow along with within efficient development associated with brand new systems with regard to a long time.

Within the energetic investigation stage, Edison's illumination investigation within the 1870's had been based on Mister Humphry Davy's evidence which heating system associated with slim whitening strips associated with steel along with electrical currents produced whitened warmth. The actual whitened warmth lit along with this kind of verve which Davy recognized larger programs out of this harnessing associated with electrical power might adhere to. He or she additionally decided which platinum eagle had been crucial towards the illumination procedure, since the just steel effective at generating the actual whitened shine.

Utilizing Davy's basis, Edison at first trademarked the platinum-based light after that solid forward in to focusing on the in a commercial sense achievable program that could permit several lighting in order to light up at the same time. He or she noticed this particular since the long term associated with illumination technologies, therefore wasn't accountable for basically the actual creation of the lamp because he or she had been the actual originator associated with bigger illumination techniques operating towards lighting of each and every facet of the every day life. He or she not just enhanced the actual light bulb by itself, but additionally offered the actual Edison Large electrical generator, the actual Edison primary as well as feeder and also the parallel submission program. Their insufficient canal eyesight within nearing improvement from the ideal lamp opened up numerous doorways towards broader applicability associated with electrical illumination. Throughout their ongoing initiatives towards the larger image, their contemporary lamp had been enhanced.

Enhancements On Breakthroughs associated with Other people

Edison's achievement and therefore attribution from the creation in order to him or her had been based on their creation associated with lights including 3 main components additional creators experienced didn't stability:

* Efficient incandescence, which means a competent as well as extented source of light

* A greater vacuum cleaner compared to additional creators employed, crucial towards procedure as well as durability from the light

* A higher opposition light combining the centralized energy submission supply along with financial feasibility because crucial in order to whole illumination techniques, broader utilization of person lights, as well as industrial marketability

Primary within Edison's use gentle as well as towards efficient incandescence had been their creation of the ideal filament inside the light. Filaments supply opposition towards the passing associated with electrical currents, kind of harnessing the actual electrical power with regard to lighting. He or she found carbonized 100 % cotton line clamped in order to platinum eagle cables surpassed the actual overall performance associated with previously filaments that burnt away quickly. Edison's filament burnt constantly with regard to forty several hours. This particular relocated electrical illumination the advance towards industrial viability.

Their unique operating style that burnt for many times had been altered numerous occasions after that began moving away via production bulk manufacturing. General, the actual development associated with Edison's last edition had been prosperous via obvious assessment associated with earlier inventors' achievements as well as usage of their own breakthroughs since the baseline with regard to development within improvement associated with their own light bulb. Because their light bulb had been produced, promoted, as well as found in structures around the world, Edison's laboratory ongoing ahead within trying enhancement associated with their unique style. Within the 1880's, Edison actually learned that bamboo-derivative filaments burnt for approximately 1200 several hours, an enormous enhancement within the initially invented forty several hours.

Contemporary Lights as well as Procedures

Right now known as incandescent bulbs, the current variations haven't greatly transformed through Jones Edison's originals. Contemporary lights make use of tungsten filaments as well as numerous gas with regard to heating system to raised temps. These types of delicate updates possess led to greater effectiveness as well as better lighting, in addition to broader applicability with regard to diverse make use of.

Development inside illumination isn't any lengthier regarding enhancing the actual incandescent light bulb. Now's a period associated with building lights with regard to various utilizes, lengthier existence, higher effectiveness, as well as much less effect on environmental surroundings, nevertheless utilizing Edison's method of structured medical investigation as well as improvement. A few kinds of contemporary lights tend to be:

* Fluorescents -- cup pipes making use of mercury watery vapor as well as argon gasoline as well as phosphor inner layer produce greater effectiveness, reduce warmth gentle

* Mercury watery vapor lights -- the edition from the neon, employing a quartz arc pipe that contains mercury watery vapor from ruthless inside a protecting cup light bulb

* Fluorescents -- cup pipes full of fluorescents gasoline combined to produce colour variants, employed for signs

* Steel halide -- Comparable within building towards the mercury watery vapor lights however produce a much more organic colour stability, employed for illumination associated with big outside locations for example stadiums as well as freeways

* Ruthless salt -- much like mercury watery vapor lights however the arc pipe is made of light weight aluminum oxide instead of quartz and possesses salt as well as mercury solids as opposed to mercury watery vapor

* BROUGHT lighting -- really small lights which match straight into the actual electric signal, driven through motion associated with electrons inside a diode

Brand new light-emitting diode lights (LEDs) create really vibrant gentle upon hardly any electrical power, final as much as sixty many years, tend to be 12 occasions better compared to tungsten lights as well as 3 times better compared to fluorescents. In contrast to additional variations associated with effective lights, LEDs gentle immediately instead of needing the glint stage in to complete lighting. Much more motivating is actually which they don't include or even make use of mercury, that is really poisonous towards the atmosphere within fingertips associated with bulbs. Household-use LEDs are required to begin changing normal incandescent lights within 2011 since the the majority of main development in order to illumination technology because the function associated with Edison, themself.

Because illumination technologies techniques right into a brand new world associated with greater effectiveness as well as environment durability, Edison's unique light bulb elements as well as form may quickly turn out to be faraway storage. The light bulb how big the human being thumbnail may gentle areas because gaily being an old incandescent how big a whole grownup hands, however along with higher effectiveness, much less harm to environmental surroundings, as well as to have an whole human being life time.

Jones Edison may likely end up being delighted concerning many of these enhancements. Nevertheless, perhaps most significant in the creation associated with their lamp is actually their organised investigation procedure by which just about all main systems because happen to be started. It's absolutely no question that the lamp switching upon more than a person's mind may be the generally recognized creative example associated with a good idea. In the end, within creating the actual technology from the lamp, Jones Edison really produced the actual technology associated with development.