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Where Could Photoelectric Effect Lead to?

The sun gives us almost everything: light, heat, hydrocarbons, food … And its generosity is boundless. The funny fact is that in ancient times, people used windmills, rivers’ energy and other tricks to ease the life. Over the years, humanity has gone through a technological revolution, moved to more productive ways of generating energy. In recent times, alternative energy is being increasingly talked about (like solar batteries). This is due to the fact that natural resources (gas, oil …) come to an end, and the rest is becoming harder and harder to produce.
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Quantum Computer

The Canadian company D-Wave has demonstrated the first operating quantum computer Orion. Thus, the actual quantum calculations became possible for tens of years earlier than it was previously planned.

What is a quantum computer? For the layman it is a computing engine before which a conventional computer is like abac prior to the time of computers. And, of course, it is something very far from reality. (more…)

Education in Ancient Rome and Greece

The peculiarity of the education and teaching system in Ancient Rome was the fact that the state apparatus of this powerful nation was in need of educated people. This need was satisfied through the preparation of young men from noble and independent families by home teachers and highly educated Greeks.

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Ancient Education

Education is the best provision for the journey to old age.

The modern sane person has no doubts about the value of education, which attaches human to the achievements of civilization and prepares him/her for the independent creative activity in chosen field of employment. The family and university play important role in education, because the education process appears from the family and teaching process – from the higher education institution. Education is the part of state policy. It is budgeted with significant costs in each state.

In the ancient states the education and teaching were carried out mainly in the family. In the transition era from the communal to the slave system the old traditions of family education are kept and changed in the Ancient civilizations of the East. Pedagogical prerogatives of the patriarchal family have been fixed in the literary monuments of the Ancient East, as the Laws of the Babylonian King Hammurabi (1750 BC), The book of Proverbs of Jewish King Solomon (early 1st millennium BC), The Indian Bhagavad Gita (the middle 1st millennium BC), etc.

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Series: Types of Series and Types of Tests

A series is an infinite addition of an ordered set of terms. The infinite series often contain an infinite number of terms and its nth term represents the nth term of a sequence. A series contain terms whose order matters a lot. If the terms of a rather conditionally convergent series are suitably arranged, the series may be made to converge to any desirable value or even to diverge according to the Riemann series theorem. Let the terms in a series be denoted by the symbol, a_{n ,}and the nth partial summation be denoted using the following sigma notation for any natural number n:

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The Platonic Solids

The objects commonly referred to as platonic solids are regular solids or better still, they are called regular polyhedra. The solids are convex polyhedra that have equivalent faces made up of regular polygons that are congruent-the word polyhedra means ‘’many faces’’ in Greek. There are exactly five of the platonic solids called polyhedra and they are:

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Hempel’s Ravens Inductive Logic

The German philosopher Carl G Hempel, in his beautiful and elegant treatise written in 1965, demonstrated that there were flaws in the long held scientific processes of inductive reasoning, generalization, and falsifiability of logic as it is commonly understood and practised.

The background of inductive reasoning: Hempel used raven as a central point of his argument against the long held pattern of scientific reasoning and he used the following example: Imagine that you had taken a long walk as a scientist and you happened to see a raven that you noted to be black, you might make your comment and say, ‘’I saw a black raven.’’ If sometimes after that you noticed a few more ravens that were black, you might say ‘’what a perfect coincidence, these other ravens are black too.’’ If time passed by and in your adventure you happened to see more ravens that were black, the chances are that you could say ‘’this is much more that coincidence’’ and with the instincts and natural practice of an observant scientist, you therefore form a hypothesis ‘’All ravens are black.’’
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