1854, American Henry Goebbels put a carbonized bamboo filament under a vacuum glass bottle to make it glow. Today, his invention seems to be the first incandescent lamp with practical value. But did not apply for a design patent in time.
1878, Joseph Wilson Swan, an Englishman, obtained a British patent for a light bulb powered by carbon wires under vacuum.
1875, two Canadian electrical technicians sold the electric lamp patent to Edison. 1879, he improved the patent and made a light bulb with carbon wire. However, the US Patent Office ruled that his invention had a criminal record and was invalid. British Swan sued Edison for patent infringement and won the case. Finally, after years of litigation and negotiation, Edison obtained the patent right of carbon filament incandescent lamp at 189 1.
So in a strict sense, British chemist humphry davy should be the person who invented the electric light.
The invention of gunpowder is the result of people's long-term practice of alchemy, and there is no specific age and inventor. But at the latest, in the first year of Yongchun, Tang Gaozong (682), an alchemist in the Tang Dynasty initiated the sulfur combustion method, in which sulfur and saltpeter were ground into powder, and then Gleditsia sinensis (containing carbon) was added. This prescription is a mixture of three herbs, which has initially possessed the ingredients contained in gunpowder.
The invention of gunpowder will only be earlier than this year (682).