
This website aims to help you understand, in a simplified way, the physics principles used in medical equipment. Please click on the topics below:
- Pulse oximeter
- Endotracheal tubes
- Vaporisers
- Ultrasound basics
- Magnetic Resonance Imaging basics
- Electricity basics
- Electrical safety
- Defibrillators
- Capnography
- Circle breathing system
- International System of Units
Here are some other interesting topics. Please click on the topics below:
- Most famous CO2 absorber in the world : The story of Apollo 13
- Amazing experimental laryngeal masks : The history of the LMA
- Ancient equipment used to cause pain (yes it is weird)
- Interesting historical anaesthesia Equipment
- Leonardo Da Vinci may have invented the first breathing system with valves 500 years ago

Let me briefly tell you about another website I run that you may like. In addition to medical technology, I am very interested in psychology. According to psychologists, certain negative ways of thinking can cause unhappiness. I have made a website that explains how to find happiness by changing such ways of thinking. The website is called “Happy Thinking” and is completely free. You are welcome to visit it at the link below.


Hello! My name is Pras and I am the author of this website that you are now reading. I have made this website completely free to access so that people from all over the world can benefit from it.
If you can afford it, I would be very grateful if you would consider making a single donation of one dollar (or the equivalent in your currency) to help cover the expenses needed to run this website (e.g. for special software and computers). For this website to survive, donations are desperately needed. Sadly, without donations, this website may have to be closed down.
Unfortunately, perhaps because many people think that someone else will donate, this website gets only very few donations. If you are able to, please consider making a single donation equivalent to one dollar. With support from people like you, I am sure that this educational website will continue to survive and grow.

