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Our tags are actually a pretty good guide here.
modern The period of history roughly from the 15th century to the mid 20th century
contemporary-history Contemporary history describes the period timeframe that is without any intervening time closely connected to the present day and is a certain perspective of modern history.
These are the categories used by historians.
Now of course people like to propose their own "Age"s to slot the contemporary period (and usually all or part of the modern period). The only one you are probably safe with is "Modern Age", which is essentially a synonym for "Modern Period" (usually with Contemporary thrown in).
Anything else you hear generally comes with a specific outlook or theory attached. Of those, ones I have heard are:
(Discourse on the last bullet follows. Skip it if you like)
Douglas S. Robertson took the idea of the Information Age and went even further. He classifies all societies based on the amount of information, in bits, that a typical member has access to. I believe this is called "Informationalist History".
Where h
is the amount of info one mind can hold, and is probably in the vicinity of 5Mb (5*106 bits).
The exponent on that number of bits is the important thing. How far one society outclasses another can be gauged by the difference in those exponents. This is why Native Americans, the most advanced of whom barely had writing, had no hope of competing with Europeans with printing presses, but under the right conditions could actually replace a society of Europeans with no printing press a few years earlier. Being a couple of orders of magnitude back can perhaps be dealt with. However, be several back and you're lucky if they bother to treat you as the same species.
An Informationalist would say we are in the Computer Age, and that further human progress to any new level is going to require us to find ways around our current limitations on information access (particularly combing through massive amounts of it in new and more productive ways)
Upvote:1
This might not answer your question, but could be useful. Back in the school the history textbook contained a list of historic areas, something like this (I give you the Hungarian names I remember and the approximate English translations):
Of course, this was a communist interpretation as you could guess from the dates. I'm not 100% sure about 1640, but as it was described as the start of the English civilian revolution in the textbook, the revolution-obsessed communist may have chosen this date to be more in line with their theories. So the short answer is some historians defined the (then current) age as "most modern age". I don't know what happened since the fall of communism, maybe we went back an age :-)