The first Headphones were invented (1 янв 1910 г. – 1 сент 1951 г.)
Описание:
The American engineer Nathaniel Baldwin was behind the first invention of headphones. It is said that he made these headphones by hand in his kitchen. These headphones could amplify sound.Добавлено на ленту времени:
Дата:
1 янв 1910 г.
1 сент 1951 г.
~ 41 years