Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
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.
Look up the medications in your drug text, your nursing drug book and on the Internet. At times you may need to contact a pharmacy to get answers to your questions. You need to
Applications of Optical Fibres: Fibre optics finds many applications in areas like medicine and communications which we will briefly describe. We will also discuss its advht
Explain Collecting Duct or Tubules - Structures of a Nephron Collecting Duct/Tubules: A long straight portion after the distal tubule is the open end of the nephron. It extends
In hydraulic machines a liquid that has filled a pipe is pushed at one end of the pipe. The liquid then pushes a machine part located at other end of the pipe. Why isn''t gas used
The Early History of the Earth The Earth has been evolving and changing ever since its origin, about 4.5 billion years ago. In the first tens of millions of years of the Ea
What are the major challenges of mining a huge amount of data (e.g., billions of tuples) in comparison with mining a small amount of data (e.g., data set of a few hundred tuple)?
Coastal Seafood Coastal Seafood is a family-owned business that operates on the East Coast. The company already uses both financial and point-of-sale software, but has been una
Carbon dioxide, dry powder and vapourising liquid extinguishers : Fires produced by spilled liquids should be extinguished by directing the jet or discharge horn towards the near
How are babys produced
Observing changes of position of the earth with respect to the sun Mark a line on the floor or the wall where the sun shines in your room. Note the exact month, day and hour. A
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd