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The last geographical area which will be discussed under each time-frame will be the whole of the New World, America. Since this consists of two major continents with an intermediate connecting region, the area will be divided into three subdivisions.

North america

This geographical area is shown on the map-diagram opposite. In the text the historical material will often be further divided into [1] The Far North and Canada and [2]The United States. Since we are interested in a geographical area, not necessarily political boundaries, the first category of "The Far North and Canada", will include Alaska and Greenland, even though the former, of course, is a part of the United States and the latter belongs to Denmark. The second portion will actually be limited to the continental United States. It will be of interest to compare latitudes on this diagram with those of Europe and the Far East. For example, we will be reminded that the British Isles lie at about the same parallel as the southern part of Hudson Bay in Canada and that the center of the United States is on the same latitude as north China and the Tarim Basin in Central Asia. The Bering Strait, the middle of Hudson Bay and the southern tip of Greenland are all on approximately the same latitude as Leningrad in Russia.

North America (This map was obtained from (External Link) and is used with permission under a Creative Commons Attribution 3.0 license .)

Mexico, central america and the caribbean

The map-diagram showing this and the next subdivision is on the second- page ahead. Mexico is shown in violet color, while Central America and the Caribbean islands are in yellow. The Canary and southern equatorial currents, which have been important in the discovery of the New World, are shown. The present political lines in Central America are shown, marking Guatemala, Belize, San Salvador, Honduras, Nicaragua, Costa Rica and Panama, going from northwest to southeast.

South america

On the South American map the rough course of the main rivers and the general extent and location of the cordillera are shown. No attempt has been made to outline the current borders between the various countries, but the general areas of the most important are indicated. In the main body of the manuscript in some time-frames this continent is divided into [1] Western and Northern Coastal Areas and [2]Eastern and Central Areas.

Mexico, Central America, the Caribbean, and South America (This map was obtained from (External Link) and is used with permission under a Creative Commons Attribution 3.0 license .)

    Choose different region

  • Africa
  • Central and Northern Asia
  • Europe
  • The Far East
  • The Indian Subcontinent
  • The Near East
  • Pacific

Questions & Answers

what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
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Damian Reply
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Daniel
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Maciej
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Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
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On having this app for quite a bit time, Haven't realised there's a chat room in it.
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what is biological synthesis of nanoparticles
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what's the easiest and fastest way to the synthesize AgNP?
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Cied
types of nano material
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I start with an easy one. carbon nanotubes woven into a long filament like a string
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Source:  OpenStax, A comprehensive outline of world history (organized by region). OpenStax CNX. Nov 23, 2009 Download for free at http://cnx.org/content/col10597/1.2
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