光
Today's Chinese character of Japanese is "光".
This Chinese character means light.
You can watch how to write this. - (「光」の書き順(筆順)動画 - 漢字書き順辞典)
There are 3 ways to read this, "ひかり" or "ひかる (光る)" or "こう".
"光速 (こうそく)" means the speed of light.
The speed of light is about 300,000 kilometers per second.
The speed of light being constant is the fundamental principle of relativity.
This Chinese character means light.
You can watch how to write this. - (「光」の書き順(筆順)動画 - 漢字書き順辞典)
There are 3 ways to read this, "ひかり" or "ひかる (光る)" or "こう".
"光速 (こうそく)" means the speed of light.
The speed of light is about 300,000 kilometers per second.
The speed of light being constant is the fundamental principle of relativity.
By Higashi-Mikawa Kyōjindō Shujin (東三河狂人堂主人)