Help to make Alexa smarter on Alexa Answers. Sign in with Amazon


When were plasters invented?

Dr. John Maynard advanced the idea in 1848. His plaster involved taking fluid derived from gun cotton (explosive, highly nitrated nitrocellulose) dissolved in sulfuric ether (regular, diethyl ether in modern parlance) and brushing it on the skin. Then you covered it with cotton strips.

{{ relativeTimeResolver(1613510901402) }}

Points points 50
Rating 0

Similar Questions
Animals 2 Answers
Animals 2 Answers
Animals 1 Answer

Join Alexa Answers

Help make Alexa smarter and share your knowledge with the world