Ship-building, Science

Assignment Help:

Ship-building:

The shipbuilding industry in  the seventeenth century. witnessed far-reaching changes that mainly resulted from imitating European techniques. The Indian sea-going ships, until the first half of the seventeenth century, were called 'junks' by the Europeans. These were very large and supported  immense main sails. In some ways, the imitations even improved upon the originals. The Indian method of riveting planks one to the other gave much greater strength than simple caulking used by European ship-builders. A lime compound dabbed on planks of Indian ships provided an extraordinarily  firm protection against sea-weeds. However,  it was the instruments used on ship where India  lagged much behind Europe. Indians failed to fashion modem navigation instruments. The main  instrument used on Indian ships still remained  the astrolabe. Later,  in the seventeenth century, European captains and navigators were employed on Indian ships, and they naturally used telescopes, quadrants, and other instruments  that were imported from Europe.  

Metal Screw:

One important device that had a great potential in the manufacture of precision instruments and machinery was the metal screw. It came into use in Europe from the middle of the fifteenth century for holding metal pieces together. Its use was of great importance in mechanical clocks. The screw began  to be used in  India by the second half of the seventeenth century and even then  it was a  less efficient version of the European screw. The grooves were not cut, but wires were soldered around the nail to create the semblance of grooves. This had to be done owing to the absence of  lathes which were used in Europe for cutting grooves. Dueto this limitation, the Indian screw did not fit properly. 

 

 


Related Discussions:- Ship-building

Earths magnetism, what is the cause of earth''s magnetism?

what is the cause of earth''s magnetism?

Labels and packaging to handling of chemicals, Labels and Packaging's : In...

Labels and Packaging's : In order to minimise the hazards associated with using a particular substance it is necessary to know what the precise dangers are. The label on the conta

How do microbes enter our body?, How do Microbes Enter Our Body? You ha...

How do Microbes Enter Our Body? You have learnt that microbes exist virtually everywhere,  and hence our body is constantly exposed to them. They gain access  to our body throu

Need for code of behaviour for laboratory staff, Need for Code of Behaviour...

Need for Code of Behaviour : A laboratory is a potentially dangerous working environment. Cuts from broken glass, chemical or thermal burns and poisoning are three examples of lab

Erosion of a granite, a.  Which type of ripple marks would you expect to se...

a.  Which type of ripple marks would you expect to see on the bed of a river? Why? b.  Which type would you expect to find on the floor of a standing body of water? Why? c.

What does regolith mean, What does regolith mean? Ans) This refers to ...

What does regolith mean? Ans) This refers to a layer of loose surface material covering bedrock.

Osmosis, What is osmosis? What are Isotonic, Hyperonic and Hypotonic Slout...

What is osmosis? What are Isotonic, Hyperonic and Hypotonic Sloutions? What are the pracautions for the experiment of osmosis?

Role of communication in promoting education , Role of communication in pr...

Role of communication in promoting education: Transmission  of knowledge and information, which is the first step in education, is obviously possible only through communication

Erkinson develpomental theory, Maureen is a 50 year old married mother of t...

Maureen is a 50 year old married mother of three school age children. She works part-time at the local bank as a teller. She is going through menopause and is finding it very annoy

Explain the routes of administration of drugs, Question 1. Explain the ...

Question 1. Explain the routes of administration of drugs 2. List 4 antimuscarinic drugs and mention their uses 3. Explain the role of bronchodilators in the treatment of

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