Rare 10 Yen Coins in Japan
In Japan, there are a plenty of 10 yen coins, and some of them are known as rare coins. They
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Learning English and Japanese
For everyone learning English/Japanese
History
The Relationship Between Playing Cards and a Calendar
Today, I’d like to introduce the relationship between playing cards and a calendar. The red cards implies noon, and the
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Inuktitut Language
Today, I learned about Inuktitut. Inuktitut is a language that is used by Inuit who live in the northern part
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The Coin Which Has The Highest Value.
Do you know the regularly used coin which has the highest value? In the past, It was Japan’s 500 yen
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Greenland and Iceland
Today, I learned about etymologies of Greenland and Iceland. Both of them were named by Erik the Red in the
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Definition of Meter
Today, I learned about a length unit ‘meter.’ In the past, the meter was defined as one ten-millionth of the
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The Largest Door
Today, I’d like to introduce the largest “sliding door” in the world. It is located in the Tanegashima Space Center
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Collatz Conjecture
Today, I wrote a program source of Collatz Conjecture. 今日は、コラッツの問題のプログラムを書きました。 Although this is one of the unsolved problems in number
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Forget-me-not
A forget-me-not is a flower. 勿忘草は、花の名前です。 This name is derived from a story in medieval Germany. この名前は、中世ドイツのある物語に由来します。 Knight Rudolph found
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