Agriculture on a large scale, Science

Assignment Help:

Agriculture on a large scale:

Crops had  to  be  planted and  harvested in  the  right season. Floods were a recurrent phenomenon  in the river valleys, for which it was essential to be prepared beforehand. The observation of sun and stars  to  fix the length of a year became so  precise  that  already  in 2700 B.C., the Egyptians were able  to  fix  it at 365.2422 days! Sumerians  and their successors  in Mesopotamia adjusted t'he solar (sun-based)  and lunar (moon-based) calendars through accurate observations.  They invented the sexagesimal system of 360 degrees in a circle (near enough to the days in  a year), 60 minutes in  an hour, 60 seconds in a minute.  The exercises were carried out using mathematical tables and ied to algebra and arithmetic of  the later epochs. Another occupation  that came to be very prestigious with  the growth of  cities was that of medicine.  Although the practice of medicine was limited to treating wounds, dislocations, fractures etc., the practitioners could successfully diagnose many diseases. They could compare cases with one another, notice different diseases and record them.  From such descriptions, orally passed on  to later generations, arose the sciences of  anatomy and physiology.  Practitioners  of medicine also had  the knowledge of plants and mineral substances to prepare drugs for various diseases. They grew plants and herbs for this purpose.  It is from this source  that the science of botany arose later. The basis for chemistry was laid in the observations  and practices of jewellers, metal- workers and potters.  They knew about at least nine chemical elements-gold,  silver, copper, tin, lead, mercury, iron, sulphur and carbon, and also about a variety of dry and liquid reagents.  The process of  smelting ores, of purifying metals, of colouring  them, of adding enamel%-all  involve complex chemical reactions  that were learnt by many trials and experiments. However, chemistry never rose to the rank of a recognised science  in  the 'Bronze Age.  


Related Discussions:- Agriculture on a large scale

Earthquakes, Occurrence and characteristics of earthquakes

Occurrence and characteristics of earthquakes

Social scientists, Write an essay to answer the following question: How ca...

Write an essay to answer the following question: How can social scientists explain human behaviour scientifically?Discuss the merits and limitations of the applications of the sci

Cycling of materials in ecosystem, Cycling of materials in ecosystem: L...

Cycling of materials in ecosystem: Living organisms require four nutrients in relatively large amounts, these are carbon. oxygen, nitrogen and hydrogen. They also require phosp

Explain the muscle layer, Explain the Muscle layer This layer consists ...

Explain the Muscle layer This layer consists of two layers of smooth muscle. The outer layer is a longitudinal muscle layer and the inner layer is a circular muscle layer. But

Developments in medicine, Developments in Medicine: During the early Ve...

Developments in Medicine: During the early Vedic period, healing was thought to be the duty of  the priests. Diseases were seen as the results of God's wrath for sins committed

What is the earth made of, What is the earth made of? The overall compo...

What is the earth made of? The overall composition of the Earth, in terms of elemental composition is as follows:   Iron 34.6% Oxygen 29.5% Magnesium 12.7% Silic

Agriculture on a large scale, Agriculture on a large scale: Crops had  ...

Agriculture on a large scale: Crops had  to  be  planted and  harvested in  the  right season. Floods were a recurrent phenomenon  in the river valleys, for which it was essent

Explain differentiated cells in an organism, Explain Differentiated cells i...

Explain Differentiated cells in an Organism These are the post-mitotic cells, which have undergone specialization and/or exhibit the division of labor. Therefore, these cells a

State the pipette method of soil, State the Pipette Method of soil The ...

State the Pipette Method of soil The   sieve analysis, though is a true particle size analysis, is  unable to separate particles smaller than 20 microns. Such particles are sep

Micro biology, what are the micro organism in yeast used in bread productio...

what are the micro organism in yeast used in bread production

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd