Its used in the compressors of refrigerators and air- conditioners
Crocoite is mainly used as a mineral specimen. It used to be used as a minor ore of chromium, but it is now too rare to be used for that.It is on wikipedia too
dilute ethanoic acid is used as a preservative in the preparation of pickles.it is used for making cellulose acetate which is an important artificial fibre.it is used in the manufacture of acetone and esters used in perfumes.it is used in the preparation of dyes.it is used to coaggulate rubber from latex.it is used for making white lead which is used as a white paint.it is used as a chemical reagent in chemistry lab.
evaporating is used in preparation of petrol, etc.
in what used lincomycin that is for what ?
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The invention is Quipu..
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The Inca made significant contributions to architecture, creating impressive structures like Machu Picchu. They also developed a complex road system that connected their vast empire. Additionally, the Inca made advancements in agriculture, particularly with their terraced farming techniques.
the incas used the quipus to keep records
The Inca's used the quipu to record numbers since they didn't have a form of writing. The quipu is a system of strings and knots used to represent numbers so that the Inca's wouldn't have to write down anything.
A Inca Quipu is a string with many knots used to record information as there was no system of writing during the Inca empire. The strings were often colored to represent something.
As a writing system to record information about the ruler
* Quipu or Khipu were recording devices used in the Inca empire. It consisted of coloured spun and plied strings from Illa or Alpaca hair or cotton cords with numeric and values encoded by knots in a base 10 positional system.
The Inca used a sophisticated system of communication that relied on runners traveling on foot along a network of roads. These runners would carry messages in the form of quipus, a system of knotted strings, or through oral messages passed down from generation to generation. This allowed the Inca to transmit important information quickly and efficiently across their vast empire.
Inca's
Catherine Mutz has written: 'Quipu' -- subject(s): Incas, Quipu, Antiquities