Skip to main content

Election of the House of Councilors

Today I visited the Japanese embassy to vote the Saninsen (House of Councilors). It seems LDP will hugely win. The focus is not over half, but 2/3 of the parliament. After the vote, they will restart more than 8 atom reactors. This time I felt the sign of perish of Japan. It is not about atom reactors, the mentality of the country.

Once Japanese faced to a disaster, people cooperated, they invented a new technology, rebuild the city, even a better one. Disasters were hard challenges, but Japanese eventually handle each of them and use them to develop themselves to the next level. Sometimes Japanese made an opportunity from a disaster. This time they even have not been able to rebuild the city in Fukushima, have no concrete plan for the new energy.  Even I hypothesize myself to use atomic reactors, the plutonium thermal use plan has been so delayed, no breeder reactor technology yet, no sign of practical fusion reactor technology, there is no future of light water reactor. Now we depends on the past legacy. Where did the strength of Japan go? When does Japanese start behaving a dying person who don't realize the death is coming, just extend a few more years life?  When? When haven't we seen the future?

I say to myself, Japan is just a country, it is a small things to compare to the whole world. Even so, I don't want to see that is perished. I didn't know that: to see the death of country which once was great, is sad. Especially the country I was grown up.

Comments

Popular posts from this blog

Why A^{T}A is invertible? (2) Linear Algebra

Why A^{T}A has the inverse Let me explain why A^{T}A has the inverse, if the columns of A are independent. First, if a matrix is n by n, and all the columns are independent, then this is a square full rank matrix. Therefore, there is the inverse. So, the problem is when A is a m by n, rectangle matrix.  Strang's explanation is based on null space. Null space and column space are the fundamental of the linear algebra. This explanation is simple and clear. However, when I was a University student, I did not recall the explanation of the null space in my linear algebra class. Maybe I was careless. I regret that... Explanation based on null space This explanation is based on Strang's book. Column space and null space are the main characters. Let's start with this explanation. Assume  x  where x is in the null space of A .  The matrices ( A^{T} A ) and A share the null space as the following: This means, if x is in the null space of A , x is also in the null spa

Gauss's quote for positive, negative, and imaginary number

Recently I watched the following great videos about imaginary numbers by Welch Labs. https://youtu.be/T647CGsuOVU?list=PLiaHhY2iBX9g6KIvZ_703G3KJXapKkNaF I like this article about naming of math by Kalid Azad. https://betterexplained.com/articles/learning-tip-idea-name/ Both articles mentioned about Gauss, who suggested to use other names of positive, negative, and imaginary numbers. Gauss wrote these names are wrong and that is one of the reason people didn't get why negative times negative is positive, or, pure positive imaginary times pure positive imaginary is negative real number. I made a few videos about explaining why -1 * -1 = +1, too. Explanation: why -1 * -1 = +1 by pattern https://youtu.be/uD7JRdAzKP8 Explanation: why -1 * -1 = +1 by climbing a mountain https://youtu.be/uD7JRdAzKP8 But actually Gauss's insight is much powerful. The original is in the Gauß, Werke, Bd. 2, S. 178 . Hätte man +1, -1, √-1) nicht positiv, negative, imaginäre (oder gar um

Why parallelogram area is |ad-bc|?

Here is my question. The area of parallelogram is the difference of these two rectangles (red rectangle - blue rectangle). This is not intuitive for me. If you also think it is not so intuitive, you might interested in my slides. I try to explain this for hight school students. Slides:  A bit intuitive (for me) explanation of area of parallelogram  (to my site, external link) .