The oldest-known forms of writing were primarily logographic in nature, based on pictographic and ideographic elements. Most writing systems can be broadly divided into three categories: logographic, ...
Pictograms, in turn, evolved into ideograms, graphical symbols that represent an idea. Their ancestors, the pictograms, could represent only something resembling their form: therefore a pictogram of a ...
A pictogram (pictograph) is a symbol representing a concept, object, activity, place or event by illustration. Pictography is a form of proto-writing whereby ideas are transmitted through drawing. Pic ...
The next step in the history of communications is petroglyphs, carvings into a rock surface. It took about 20,000 years for homo sapiens to move from the first cave paintings to the first petroglyphs, ...
The oldest known symbols created with the purpose of communication through time are the cave paintings, a form of rock art, dating to the Upper Paleolithic. Just as the small child first learns to dra ...
The imperfection of speech, which nonetheless allowed easier dissemination of ideas and stimulated inventions, eventually resulted in the creation of new forms of communications, improving both the ra ...
The history of communication dates back to prehistory, with significant changes in communication technologies (media and appropriate inscription tools) evolving in tandem with shifts in political and ...
Sustainable Process DevelopmentChemical Engineers are today focusing their disciplines on the use of alternative feedstocks such as biomass and societal waste to produce chemicals and energy. Their ai ...
In the early part of the last century, a parallel concept called Unit Processes was used to classify reactive processes. Thus oxidations, reductions, alkylations, etc. formed separate unit processes a ...
The answer, provided by Arthur D. Little to the President of MIT, was to emphasize the approach chemical engineers took to the design and analysis of processes rather than a process or a product. The ...
For the other established branches of engineering, there were ready associations in the mind of the common man: Mechanical Engineering meant machines, Electrical Engineering meant circuitry, and Civil ...
Early programmes simply married industrial chemistry with mechanical engineering. For the profession to be born, proponents needed to clearly define their activity as something more than a mishmash of ...
Industrial Chemistry was being practiced in the mid 1800s, but it was not until the 1880s that the engineering elements required to control chemical processes were being recognized as a distinct profe ...
The Industrial Revolution led to an unprecedented escalation in demand, both with regard to quantity and quality, for bulk chemicals such as sulfuric acid and soda ash. This meant two things: one, the ...
Chemical engineering as a discipline that was developed out of those practicing "industrial chemistry" in the late 19th century. Before the Industrial Revolution (18th century), industrial chemicals a ...
