History of television
| 1925 | Mr. Bayard lives in America invented the television. |
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| 1926 | Kenjiro Takayanagi used a cathode-ray tube, and succeeded receiving and televising a word of the "i" . |
| 1929 | A British BBC broadcasting station started experiment broadcasting of the television. |
| 1935 | Nazi Germany started broadcasting of the regular time of the television. |
| 1939 | The iron tower of 100m in height of Technical Research Institute of Japan Broadcasting Corporation flew the electric wave around Tokyo. and did the examination broadcasting of the television for the first time in Japan. |
