Two groundbreaking medical pioneers completely transformed surgery in the 1800s,... Show more
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Lister & Simpson: Medical Game-Changers
Joseph Lister was fascinated by infected wounds and inspired by Pasteur's germ theory. In 1865, he made a brilliant connection - if germs caused food to decay, they must cause flesh to rot too. His solution? Carbolic acid, originally used in sewers to kill nasty smells, became the first proper antiseptic for cleaning wounds during surgery.
Meanwhile, James Simpson was tackling surgery's biggest problem - excruciating pain. He'd seen the flaws in existing options like ether (which was flammable and made patients sick) and laughing gas (too weak to be useful). By accident, whilst experimenting with chemicals, he inhaled chloroform and passed out - discovering a powerful new anaesthetic.
Quick Fact: Simpson's chloroform got the ultimate royal endorsement when Queen Victoria used it during childbirth in 1853!
Lister's antiseptic methods were incredibly effective. His patient death rates plummeted from 45% to just 15% by 1870, and wound infections became far less common. However, many surgeons remained sceptical because they didn't fully understand germ theory - they simply couldn't believe the air was full of invisible germs.
Simpson's chloroform solved the pain problem brilliantly, allowing surgeons to perform deeper, more complex operations. Patients were finally willing to undergo surgery without the terror of unbearable pain. Yet both innovations came with serious risks - carbolic acid made surgeons' hands sore and smelly, whilst chloroform overdoses could be fatal, with Hannah Greener becoming the first recorded victim.
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This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
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I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
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This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
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The Impact of Lister and Simpson on Industrial Medicine
Two groundbreaking medical pioneers completely transformed surgery in the 1800s, making operations safer and pain-free. Joseph Lister revolutionised cleanliness in operating theatres, whilst James Simpson discovered a powerful new anaesthetic that changed surgery forever.
Lister & Simpson: Medical Game-Changers
Joseph Lister was fascinated by infected wounds and inspired by Pasteur's germ theory. In 1865, he made a brilliant connection - if germs caused food to decay, they must cause flesh to rot too. His solution? Carbolic acid, originally used in sewers to kill nasty smells, became the first proper antiseptic for cleaning wounds during surgery.
Meanwhile, James Simpson was tackling surgery's biggest problem - excruciating pain. He'd seen the flaws in existing options like ether (which was flammable and made patients sick) and laughing gas (too weak to be useful). By accident, whilst experimenting with chemicals, he inhaled chloroform and passed out - discovering a powerful new anaesthetic.
Quick Fact: Simpson's chloroform got the ultimate royal endorsement when Queen Victoria used it during childbirth in 1853!
Lister's antiseptic methods were incredibly effective. His patient death rates plummeted from 45% to just 15% by 1870, and wound infections became far less common. However, many surgeons remained sceptical because they didn't fully understand germ theory - they simply couldn't believe the air was full of invisible germs.
Simpson's chloroform solved the pain problem brilliantly, allowing surgeons to perform deeper, more complex operations. Patients were finally willing to undergo surgery without the terror of unbearable pain. Yet both innovations came with serious risks - carbolic acid made surgeons' hands sore and smelly, whilst chloroform overdoses could be fatal, with Hannah Greener becoming the first recorded victim.
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Where can I download the Knowunity app?
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This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
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Elisha
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This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
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The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user