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The main contents of this website. These essays will be used for publishing books.

2014-08-12

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.

2014-06-18

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.

2014-04-21

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.

2013-12-12

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 hot and cold reservoirs make alternately expand or compress, and by means of convection that the change of density resulting from the change of volume causes. A heat engine is not confined to an artificial one. The Earth also does a useful work for living systems as a heat engine. The heat engine whose hot reservoir is solar radiation heat maintains the circulation of air and water, while the heat engine whose hot reservoir is geothermal heat maintains the circulation of mantle and mineral nutrition.

2013-08-29

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 as Oxford Calculators and Oresme who discovered and developed the Mean Speed Theorem prepared for Galileo’s discovery of kinetic laws. They did not perform experiments except thought experiments, but since the 17th century scientific revolution is the shift from Aristotle-Thomas paradigm to Plato-Archimedes paradigm, we can consider the Oxford Calculators and Oresme to be the pioneer of the paradigm shift, because this paradigm insisted on mathematical models preceding experience.

2013-06-30

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.

2013-04-14

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 prototype of the Gregorian calendar. The numeral system we now use is, however, the zero-based decimal system. Identifying the time in reference to the current time system makes it difficult to calculate the functions whose variables include time. Although we should avoid unnecessary amendments, it is not desirable that we will continue to be bound by the numbering system which was formed when European mathematics was underdeveloped. Here I propose the best calendar that I can think of.

2013-03-12

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 as action at a distance but today they are explained as action through medium. The lesson we must learn from history of electromagnetic theory is that we should not refuse study in occult phenomena because of its occult appearances but, as accepting action at a distance is not science but occultism, it should be explained as action through medium.

2013-02-04

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 has the same structure as the Sumerian sexagesimal system and we can assume the Chinese sexagesimal cycle was imported from Mesopotamia to China. Today both the Mesopotamian sexagesimal system and the Chinese sexagenary cycle are apt to be explained in terms of the 60-year conjunction cycle of Jupiter and Saturn, such an interpretation of posterity should not conceal the original implication.

2012-12-30

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 sophisticated as the Greek philosophy at that time. King Milinda did not abandon the household life and it is not certain whether he really understood Buddhism. Still he and his successors protected Buddhism, possibly because propagation of Buddhism could contribute to the stable reign.