At most you can create a vacuum in your mouth when inhaling (and I doubt that very much). Thus: max inhale pressure differential: 105Pa. When blowing, you can create a much higher pressure differential.Sharkingboy8 said:I guess more generally than this, why does suction have such a small impact on its surroundings compared to blowing?
rcgldr said:When air is blown from a higher pressure source, the flow is directional. When air is drawn into a lower pressure zone, the flow is not directional, but instead is drawn inwardws from all directions, so the net flow in any specific direction is much less.
lychette said:I also think that, for biological reasons, breathing out is a stronger reaction than breathing in. From what I remember, expelling carbon dioxide is more critical than taking in oxygen.
marcus said:That's a good explanation! To repeat/paraphrase: Blowing out creates momentum in the volume of air expelled, the directionality and coherence increases its effect. Breathing in only creates coherent directionality in the air going down your windpipe. I'll check out some of the other posts by Rcgldr. Also it was a good question by Sharker---hadn't ever occurred to me to ask.
lychette said:the fundanental thing is that you can 'blow harder than you can suck'... this is so easy to check with a pressure gauge...
As others said, even you blow at the same rate as you suck in, the blowing will still be more effective in putting out the flame.lychette said:the fundanental thing is that you can 'blow harder than you can suck'...
lychette said:I think that it is agreed that you can blow harder than you can suck...in pressure terms
Breathing out is important for our health because it helps remove carbon dioxide from our body. Carbon dioxide is a waste product produced by our cells during metabolism. If it builds up in our body, it can lead to fatigue, dizziness, and other health issues. Breathing out removes this waste gas and helps maintain proper levels of oxygen and carbon dioxide in our body.
Yes, breathing out affects the environment as it releases carbon dioxide into the air. Carbon dioxide is a greenhouse gas that contributes to climate change. However, the amount of carbon dioxide released by an individual's breathing is very small and is not a significant contributor to climate change. Other human activities, such as burning fossil fuels, have a much larger impact on the environment.
When we breathe out, the air we exhale is warmer than the surrounding air. This is because our body temperature is around 37 degrees Celsius, and the air we inhale is usually cooler than that. As the warm air from our body mixes with the cooler air in the environment, it creates the sensation of warm air when we exhale.
Breathing out helps regulate the pH of our body. When we exhale, we release carbon dioxide, which combines with water in our body to form carbonic acid. This acid is a weak acid that helps maintain the pH balance in our body. If we do not breathe out enough carbon dioxide, the pH of our body can become too acidic, leading to health problems.
Breathing out does not have a significant effect on the temperature of our surroundings. The amount of heat released when we exhale is very small compared to other sources of heat in our environment. However, if a large number of people are in a confined space and breathing out, it can contribute to a slight increase in temperature in that area.