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

Interaction in the earth ecosystem, Interaction in the earth ecosystem: ...

Interaction in the earth ecosystem: In this comparatively smaller section, we will give you  the idea, that the earth as a whole is an ecosystem. Whatever you  have learnt till

Explain how tongue can sense different tastes, Explain How tongue can sense...

Explain How tongue can sense different tastes? Our tongue can sense different tastes. Do you know which are the basic tastes and the areas where these are sensed? In humans, th

Explain protein reserve - functions of plasma proteins, Explain Protein Res...

Explain Protein Reserve - Functions of Plasma Proteins Plasma proteins provide a reserve, which can be drawn upon for vital functions in the situations of starvation and protei

Origin of life on the earth, Origin of life  on the earth: Man has alw...

Origin of life  on the earth: Man has always wondered  how he came into existence, who created him, and why he was created. Curiosity in this connection has been so strong that

How does our body know ''what to do'', How does our body know 'what to do' ...

How does our body know 'what to do' Feeling, knowing, doing anything depends on special structures called nerves. Neuronal cells in the body act as various messengers according

Explain the term liming - decreasing soil acidity, Explain the term Liming ...

Explain the term Liming - Decreasing Soil Acidity Acid soils can be managed in two ways, viz. either by growing crops suitable for particular soil pH or by treating the soils w

Physico-chemical properties of biotin, Important physico-chemical propertie...

Important physico-chemical properties of biotin include  the following: a)  It forms colourless, needle shaped crystals. b)  The vitamin is sparingly soluble in  cold water

Material Science, #1.During take-off, the wing of the airplane is actually ...

#1.During take-off, the wing of the airplane is actually subjected to a cyclic stress range of 150 MPa at a stress ratio of 0.1. Estimate the mean stress intensity factor, and the

Food chain, a food chain that does not start with plants??

a food chain that does not start with plants??

Sociology, what is the conflict perspective on cohabitation

what is the conflict perspective on cohabitation

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