What is the Japanese chalk that even told mathematicians that it is impossible to make a calculation error with this chalk?


By

Anders Sandberg

Hagoromo Bungu, which produced 'Hagoromo Chalk,' which was used by educators, announced that it would be closed in October 2014 and ended sales of Hagoromo Chalk at the end of March 2015 . The long-standing discontinuation of Hagoromo chalk caused a tremendous tremor in the education industry, and even before the discontinuation of sales, orders flooded not only from Japan but also from overseas.

In his own words: Hagoromo president explains why he closed down his beloved chalk business- Nikkei Asian Review
http://asia.nikkei.com/Business/Companies/Hagoromo-president-explains-why-he-closed-down-his-beloved-chalk-business

'I've been making chalk for 82 years, and now I'm out of business.': Nikkei Business Online
http://business.nikkeibp.co.jp/article/interview/20150326/279189/

Hagoromo Bungu was founded as the Japan Chalk Factory in 1932, and resumed production and sales as Hagoromo Bungu in 1947 after the factory was burned down due to the war damage. Hagoromo Bungu's main product is Hagoromo Chalk, a school chalk that has gained popularity due to its ease of writing, difficulty in breaking, and difficulty in producing powder. That's right.



However, due to the shift from blackboards to whiteboards, the number of production decreased to 45 million, half of the peak. In addition, due to the physical condition of President Watanabe of Hagoromo Bungu and the decline in the unit price of chalk, we announced the closure of business in October 2014.

Regarding the transition from blackboards to whiteboards, President Watanabe said, 'In my opinion, the combination of blackboards and chalk is better than whiteboards and markers. Chalk is the carbon dioxide contained in oyster shells, etc. Since calcium is the main raw material, it may be environmentally friendly, 'he said in an interview, which conveys the regret of discontinuing production.



For the reasons mentioned above, Hagoromo Bungu was forced to close its business, but the news of the announcement spread all over the world, and orders flooded not only from Japan but also from all over the world. Therefore, it seems that the end of production scheduled for the end of February 2015 has been extended to the end of March.

Such Hagoromo Chalk is popular not only in Japan but all over the world, and Joel David Hamkins , a mathematician and philosopher at City University of New York who has worked on numerous books, is one of Hagoromo Chalk lovers. In addition, Professor Brian Conrad of the Department of Mathematics at Stanford University bought and stocked Hagoromo chalk for 15 years following the closure of Hagoromo Bungu.

In a thread dedicated to mathematics , ' Where can I buy the highest quality white chalk in the United States? ', Many mathematicians exchange information about where to buy Hagoromo chalk. Some of the writings even said, 'The amazingly high quality chalk called Hagoromo Chalk is not available in the United States, so my colleague contacted the company that produces Hagoromo Chalk directly and sent it to me.' did. This post was written in 2010, after which the agency started selling Hagoromo Chalk on Amazon.

Hagoromo Chalk is so highly rated that it is impossible to make a calculation error with Hagoromo Chalk among overseas mathematicians, and Amazon has a high rating of 4.7 out of 5 stars in 48 customer reviews. That's right. The review is 'The best chalk I've ever had. I teach math at college and use Hagoromo chalk every day. It's better than any other chalk.' 'The best chalk in the world. Unfortunately, 3 2015 There are only voices praising Hagoromo Chalk, such as 'It was discontinued in the month' and 'God's Chalk'.



Even in Japan, a special feature has been set up on TV, and users who are thought to be educators on Twitter have voiced regrets about the closure of Hagoromo Bungu, showing its tremendous popularity.


Hagoromo Bungu enthusiasts seemed to have had tremendous news about the closure of Hagoromo Bungu.


Hagoromo Chalk has been discontinued due to the regret of many educators, but after the Hagoromo Bungu business is closed, Umajirushi Co., Ltd. has decided to take over the technology and produce new chalk. In Amazon's review, some users are delighted that Umajirushi will take over the technology of Hagoromo Chalk and produce it, and although the name and shape of Hagoromo Chalk will be changed, it seems that it will remain in the memory of educators.

Related Posts:

in Note, Posted by darkhorse_log