One-inch equals 2.54 centimeters (cm) so 1 cm equals about 0.39 of an inch, however divide the cm by 10,000 plus the result is 1 micron.
Dividing the micron by 1,000 yields the unit of distance known as a nanometer (nm). Divide 1 nm by 3 plus you have the approximate width of an oxygen molecule (O2)â€¦ 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 more than one-foot width. Thus, O2 maintains ample space between molecules for regular social distancing at the atomic level, and 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 74%. The rest is carbon dioxide, water vapor, plus other trace elements care about argon plus neon. At higher altitudes, gases care about ozone, helium, plus hydrogen are found. When air enters our homes plus passes through a central Heating, Ventilation as well as A/C system, the component gases are unchanged. The 1 exception is water vapor that condenses into liquid water as the air is cooled. The two of us all care about the cooled air at lower humidity, but the tploy “conditioning” aspect of the Heating, Ventilation as well as A/C 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, but removing these substances is left to the humble filter that is so often ignored but is the most important component in cleaning the air so every one of us can breathe in plus extract the life-giving O2. This is why Heating, Ventilation as well as A/C professionals are always reminding homeowners to change their filters properly in between properly busy repair calls.