
電信 電鈴 電話
When copper wire is wrapped around an iron rod and connected to a battery, it becomes an electromagnet. A science teaching material movie that explains the principle and structure of electric bells and telephones by applying the principle of an electromagnet through a fusion of live action and animation.
| Total Episodes | 1 |
| Characters | 0 |
| Tags | EducationalMixed MediaAchromatic |
| Title | Format | Season | Eps |
|---|---|---|---|
| Electrical Telegraphy, Electric Bells and Telephones | MOVIE | 1 |