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...
Wedi'i Gadw mewn:
| Prif Awdur: | |
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| Fformat: | Llyfr |
| Iaith: | Undetermined |
| Cyhoeddwyd: |
New York
Chambers
1991
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| Pynciau: | |
| Tagiau: |
Ychwanegu Tag
Dim Tagiau, Byddwch y cyntaf i dagio'r cofnod hwn!
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| Thư viện lưu trữ: | Trung tâm Học liệu Trường Đại học Cần Thơ |
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