Some things are so ubiquitous, we forget that they are there at all. Air is one of those things. We breathe it, and it keeps our bodies from popping (and freezing). But the instances we are aware of the air around us, are usually those which involve the air pressure – or more specifically the change of it. Let it be the whirring of the vacuum cleaner, the popping of our ears when we sit in a plane, or just hearing the sound of laughter; air pressure is a central part of our lives, whether we are aware of it or not.
KeywordsInternal Pressure Gaseous State Empty Space Vacuum Cleaner Conscious Effort
Unable to display preview. Download preview PDF.