Great modern inventions
Throughout the nineteenth century, inventors produced simple electric lights. For example, Joseph Swan produced a simple electric light, but, he struggled to maintain a power source and the filament soon burned out when the vacuum was exhausted. It was Thomas Edison who made the lightbulb into a pr...
Đã lưu trong:
| Tác giả chính: | |
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| Định dạng: | Sách |
| Ngôn ngữ: | Undetermined |
| Được phát hành: |
New York
Chambers
1991
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| Những chủ đề: | |
| Các nhãn: |
Thêm thẻ
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| Thư viện lưu trữ: | Trung tâm Học liệu Trường Đại học Cần Thơ |
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| Tóm tắt: | Throughout the nineteenth century, inventors produced simple electric lights. For example, Joseph Swan produced a simple electric light, but, he struggled to maintain a power source and the filament soon burned out when the vacuum was exhausted. It was Thomas Edison who made the lightbulb into a practical low current version. He used a filament based on a burned sewing thread. |
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