Lectures

The main contents of this site. These articles are going to be connected with lecture videos at YouTube.

Aug 122014
 
How can we improve recycling ?

Most of people believe that material recycling is the true recycling and thermal recycling is a fake. But the conventional material recycling is actually downcycling, whereas thermal recycling by the gasification system can realize more radical recycling. That is to say, what was thought to be the genuine recycling is deceptive, whereas what was thought to be the deceptive recycling is genuine. This recognition leads to reconsideration of the role that the government must play to promote recycling.

Jun 182014
 
Is recycling possible?

Georgescu-Roegen coined the fourth law of thermodynamics according to which matter continuously and irrevocably degrades from an available to unavailable state in a closed system including the Earth and predicted that we would soon arrive at the state of maximum entropy, material death rather than heat death. He also insisted that recycling could not avoid this material death, because the ideal of complete recycling is based on the illusion of the thermodynamically impossible perpetual motion. But what he called the fourth law of thermodynamics is false. A closed system such as the Earth can reduce material entropy in exchange for increasing thermal entropy, keeping the former low by dumping the latter in outer space. That is to say, the sustainable economy based on recycling is possible, at least theoretically.

Apr 212014
 
What is entropy?

Clausius, one of the main founders of the modern thermodynamics, is the originator of the term “entropy,” but before this coinage he used an expression “equivalence value of transformations” instead. The term “entropy,” which is now used as a physical term, was originally economically conceived as equivalent value of exchange. Thermodynamics itself was a field of physics that was economically motivated to improve the thermal efficiency of heat engines. So, it was half physics and half economics. Apart from Clausius’s interest, the term has now become an important keyword for solving the environment and resource problems.

Dec 122013
 
What work does the Earth do as a heat engine?

A heat engine is a device that repeatedly converts thermal energy into kinetic energy. It needs the difference of temperature and a working substance with high rate of expansion to do a useful work for us. It can be done in two ways: by means of the change of volume of the working substance that […]

Aug 292013
 
How original is Galileo's work on kinematics?

Galileo was once thought to have discovered kinetic laws important for classical mechanics by himself by means of observations and experiments in contrast to the Scholastics who confined themselves to the interpretation of Aristotle. To be sure he gave such an impression to readers, but the fact is that the Scholastics in 14th century such […]

Jun 302013
 
Why was Galileo convicted of heresy?

Christianity and Judaism are paternal religions that came into power after overcoming maternal religions. The Catholic Church thought of Galileo’s heliocentrism as the revival of a maternal religion, because it implies that Mother Earth moves by itself and makes the sun, the symbol of Father God, fall.

Apr 142013
 
My proposal for a new zero-based calendar

The Anno Domini dating system and the Gregorian calendar that we now use are not zero-based numbering systems. There are no zeroth days, zeroth months or the zeroth year in these systems. That is because Europeans did not know zero as a number when they invented the AD dating system and the Roman calendar, the […]

Mar 122013
 
How should scientists deal with occult phenomena?

Magnetism and electrostatic forces were regarded as occult action at a distance from ancient times and the inquiry into it waned when Christianity that banned magic had strong power. Since the Renaissance, however, researchers dared to study the occult magic and thus they pioneered modern electromagnetism and mechanics. Newton and Coulomb recognized gravitation and electromagnetism […]

Feb 042013
 
Why did Sumerians use the sexagesimal system?

Sumerians used sexagesimal numerals not only because the number 60 has many divisors or it is countable on the fingers of both hands but because 60 is the least common multiple of the number of fingers of both hands and the number of months in a year. The Chinese cycle of the Stems and Branches […]

Dec 302012
 
Philosophy of substance versus philosophy of nothingness

Milindapañha tells that King Milinda, an Indo-Greek king, talked with Nāgasena, a Buddhist sage, embraced the Buddhist faith and abandoned the household life to attain to Arahatship. The book is known to insist that the Buddhist philosophy of nothingness should be superior to the Western philosophy of substances, but actually Nāgasena’s theory was not so […]

Nov 232012
 

The original sense of “paradigm” is “exemplar” and Kuhn’s “paradigm” signifies such a textbook theory or an experiment method as students imitate as an exemplar in their scientific education. Normal science engages scientists in puzzle-solving based on a paradigm, which is more economically rational than the frequent revolutions. Even in scientific revolutions new paradigms succeed […]

Sep 292012
 
The future of the peer-review systems

When academic journals used paper media, limited space obliged editors to have referees review contributors’ manuscripts and selectively publish them, but the spread of the Internet has lowered the publication costs and the age of speed has outdated the peer-reviewed journals. To respond to the demands of the day, we should separate evaluation from publication […]

Sep 112012
 
Why did Copernicus propose heliocentrism?

The Copernican heliocentric model was not the victory of science over the religious superstition prevailing in the Middle Age. In fact his system was neither simpler nor more accurate than Ptolemy’s geocentric model. Copernicus nonetheless advanced the heliocentric model and it was accepted by not a few astronomers, because Neoplatonism that worshipped the Sun was […]

Jun 102012
 
What is an indefinite integral?

An indefinite integral is the integral whose lower boundary is constant and whose upper boundary is variable and it should be distinguished from a primitive integral that just restores primitive functions. Constants of primitive integration should also be distinguished from constants of indefinite integration that the lower boundary produces. Integration is often said to be […]

Apr 082012
 
The Copernican Revolution of infiniteness

When infinitesimal calculus was first established, the limit of a function was defined in terms of infinitesimal or infinity. As the naïve way at that time contradicted itself, new methods such as the epsilon-delta definition and non-standard analysis were devised to avoid the contradiction. Although mathematicians are not aware of it, it is Kant’s transcendental […]

Aug 022011
 
Why did Leibniz suppose the pre-established harmony?

Gottfried Leibniz named his metaphysics the system of pre-established harmony, which presupposed the ontological argument. The ontological argument resulted in pantheism. The law of continuity applies what is true of God to every substances, which resulted in monadology. The principle of sufficient reason prompts us to ask why this universe exists, which resulted in optimism. […]

Jul 052011
 

An ontological argument for the existence of God defines God as the greatest perfect being and states that He must exist because He would not be perfect or the greatest, if He remained only in thought. Anselm and Descartes proposed it, and Kant pointed out that this argument was wrong in deducing a synthetic judgment […]

May 222011
 
Why was the phlogiston theory supported?

The phlogiston theory is a chemical hypothesis that was supported in the 18th century. According to this theory, all flammable materials contain an element called phlogiston and, when a substance is burned, its phlogiston is released and the remaining ash is held to be its true form. The background of the phlogiston theory was the […]

Apr 292011
 
Why are Cartesian coordinate systems Cartesian?

A Cartesian coordinate system is named after René Descartes. But Descartes did not first invent the Cartesian coordinate system nor did he first establish analytic geometry on the ground of the Cartesian coordinate system. Still it deserves its name, because the method of the Cartesian coordinate system is similar to that of Cartesian philosophy. 1 : […]

Apr 132011
 

David Hume, a Scottish philosopher in the 18th century, is famous for skepticism on objectivity of causality and validity of moral judgment. But his assertion that causes and effects, “is” and “ought” are distinct and the connections between them are uncertain because of their subjectivity puts the cart before the horse. The fact is that, […]

Apr 022011
 

Philosophy began in ancient Greece by inquiring what arche, namely the origin of everything is. Systemics as philosophy must also answer the question. The conclusion of our systemics is arche of the world and philosophy is uncertainty. The assertions made by the previous philosophers that arche is this or that element or the subject as […]

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