Yes, there are some special membranes that make this possible. These membranes let o-h radicals pass through which are literally water molecules. But will not let O2 pass through. I have tested myself these air tight membranes in the lab.
Place an air-tight cover over the bowl.
"No... no it's really not. Water tight is when water can't get in Airt tight is when air can't get in So I guess it's similar. But different." Not an illuminating answer... Given that water molecules might be larger than oxygen molecules, then a watertight vessel may still leak air but an airtight vessel wouldn't leak either. So would a spaceship immersed in water leak? Maybe the seals are different for a vacuum but you'd think it wouldn't?
When you inahle, air rushes into your lungs because that is the only pathway air is allowed to travel. The body is designed to be air tight and water tight where it needs to be so that no foriegn material can do damage to the rest of the body.
Canon make their equipment, such as their cameras, waterproof by using air tight casing. The outside of the camera is completely air tight so that no water is able to get into the inside. They also tend to use rubber seals which is another measure to stop the water from getting in.
yes
No, 200 psi of air is not the same as 200 psi of water. This is because water is denser than air, so the pressure exerted by water at 200 psi would be greater than that of air at the same pressure.
it can be used to seal things air tight. it can be used to seal things air tight.
Yes. Laminating something properly will create a complete air and water tight seal around the document or material. Most laminate film and pouches also provide UV resistance.
Only those caskets are air (and water) tight which are "sealer" caskets, meaning that they are provided with a rubber like sealing gasket between the lid and the base of the caskets. Usually only metal caskets can be sealer caskets.
Clouds are water suspended in air the same as mist.
Space shuttles and underwater craft both must be air tight, and must carry an air supply with them.
no