What is Partial Pressure? | SCUBA THEORY

What is Partial Pressure? As scuba divers, we enter an environment that has a direct effect on the air we breath. As the pressure around us increases, as does the pressure of our gas. To understand what is happening, we must understand a term known as PARTIAL PRESSURE. A term coined by John Dalton in the early 1800.

Let's talk about GAS!

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SCUBA THEORY
This is a new series of videos where I discuss some scuba concepts in plain english! You do not have to be a Scientist or Maths genius to understand scuba theory. So have a watch and see how easy it all really is!

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[bryancoiffman]

This is the video that finally explained this in plain English. Thank

[panchvati]

Here's a huge thanks from an 11th grade chemistry student. I couldn't find a simpler explanation of this and thank god I ended up here. Thanks again!

[Matt]

It's NOT 42% oxygen at 10m. The correct explanation is that the partial pressure of oxygen at 10m is 0.42 bar. (The partial pressure is changing, not the percentages of gas)

[ismaildelaty]

Amy, , , you are incredible 🥰🥰🥰😍😍😍 adore your videos

[zezo]

Hi Amy
Can you tell me how to calculate the amount of exposure to oxygen from multi-depth dives
As the tables are based on the fixed depth according to the values of exposure
And the second question does it appear in the Maris Smart Air computer? the % of exposure ?
The third question: i know that nitrogen absorbs less than oxygen in diving usually. If that is the case, does oxygen have the same property, or is it that when it reaches the upper limit of 1.4, we can only go up to a higher levels and drop quickly? I hope the question is correct
If you think it is appropriate to explain it in a video, I would be grateful
As our trainer died, he made a technical dive at 65 meters, then after he finished the dive after 20 minutes and at a depth of 35 meters, he wanted to change to the Nitrox 37 cylinder, so he mistakenly replaced it to the cylinder with a concentration of 80, where according to the words of those who were with him, the oxygen was almost at His ascent reached 1.6. When the error occurred, the ratio shifted to 3.55. Can you explain what happened?

Thank you for your wonderful communication.

[teddyruxpin]

But why does PPO2 go over 1.0? How is it possible to breathe more than 100% oxygen?

[dazza]

I have a question. Why are regulators cable tied to the mouth piece? I’ve seen a few times them just fall off on divers under the there no other way they can be fitted safely?