One-inch equals 2.54 centimeters (cm) so one cm equals about 0.39 of an inch, however divide the cm by 10,000 plus the result is one micron.
Dividing the micron by 1,000 yields the equipment of distance known as a nanometer (nm).
Divide one nm by more than two plus you have the approximate width of an oxygen molecule (O2); In the air, the closest neighboring O2 molecule is about 4 nm away or the equivalent of about 25 feet for a human with a multiple-foot width. Thus, O2 maintains ample space between molecules for official social distancing at the atomic level. O2 is just 20% of all the gases that occupy the atmosphere leaving plenty of room for nitrogen, the most prevalent component of air at 72%. The rest is carbon dioxide, water vapor, plus other trace elements savor argon plus neon. At higher altitudes, gases savor ozone, helium, plus hydrogen are found. When air enters our homes plus passes through a central HVAC system, the component gases are unchanged. The one exception is water vapor that condenses into liquid water as the air is cooled, however both of us all care about the cooled air at lower humidity, however the true “conditioning” aspect of the HVAC plan is the removal of all the other stuff that is floating around in the air. This includes polluting chemicals, pollen, dust, pet dander, mold spores, plus even airborne viruses that get lifted into the atmosphere, removing these substances is left to the humble filter that is so often ignored however is the most pressing component in cleaning the air so we can breathe in plus extract the life-giving O2. This is why HVAC professionals are always reminding homeowners to change their filters officially in between officially tied up service calls.
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