OLD IS GOLD Episode 4: The Light Bulb & Electrical Grid (1879)
中文摘要
1879年10月21日，托马斯·爱迪生利用碳化棉线在真空玻璃球中成功发明了电灯。
English Summary
On October 21, 1879, Thomas Edison successfully invented the light bulb using a carbonized cotton thread in a vacuum glass bulb.
原文节选
On the night of October 21, 1879, Thomas Edison held a carbonized cotton thread inside a glass bulb, pumped out the air, and passed a… Continue reading on Medium »