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

A field trip to a rock quarry, A field trip to a rock quarry The quarry...

A field trip to a rock quarry The quarry should be visited by the teacher in advance. View how the rock is removed. If the rock is sedimentary, view the layers. Collect rock sa

First aid procedures, First Aid Procedures :   Your Counsellor will explain...

First Aid Procedures :   Your Counsellor will explain the first aid procedures through a demonstration session. Carefully observe ali the steps. Try to relate the contents of the f

Carbohydrates, define carbohydrates.give a brief account on classification ...

define carbohydrates.give a brief account on classification of carbohydrates.

Explain the bile pigments and salts in urine, Explain the Bile pigments and...

Explain the Bile pigments and salts in urine The bile pigment, bilirubin (a pigment formed from the destruction of red blood cells), is altered in the intestine to urobilinogen

Introduction to studies of fire safety measures , Introduction : Here you ...

Introduction : Here you have need to about the fire hazards, various causes of fires and the precautions to be taken to avoid them. You also learnt about various types of fire ext

Fire hazards, Let us recall briefly what all we have learnt about fire haza...

Let us recall briefly what all we have learnt about fire hazards in this unit. Fire accident can happen due .to a number of reasons, like, flammable liquids, faulty electrical and

What are the stages of development of a tropical cyclone, Question : a)...

Question : a) Define i) relative humidity. b) Why is it generally cloudy in the vicinity of a low pressure area and sunny in the vicinity of high pressure? c) What are th

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

Weighing moisture again, Weighing moisture again The similar experiment...

Weighing moisture again The similar experiment can be done with a bath towel. Wet the towel and wring it out. Hang it on a coat hanger. Hang the coat hanger on single end of a

SCIENCE, THE HEART PUMPS BOODS EVERY MINUTE AND EVERY SECOND OF THE DAY WIT...

THE HEART PUMPS BOODS EVERY MINUTE AND EVERY SECOND OF THE DAY WITHOUT RESTING

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