katmeow said:
Why is there so much dust in my bathroom?
Around 80% of the dust particles you see floating around in the air are dead human skin cells. The average human sheds between 5 and 6 grams of skin a week. It makes sense that a lot of this is going to end up in your bathroom where you shed your clothes and rub yourself down with a towel. plus there is the whole dust showing up more on the shiny surfaces.
Your bed is another place you'd find an awful lot of dust, as well as the natural enemy of dust... the dust mite, whose excretions are a primary cause of allergies and asthma. I'm sure you'd be enthused to know that according to estimates from the Ohio State University, around 10% of a 2 year old pillow is comprised of dead dust mites and their excrement. Sleep tight!
Little_Miss_MDMA said:
does tapping the top of a can before you open it actually help it stop from exploding?
Yes, although you'll probably find it's more effective to flick the side of the can.
Shaking a can of carbonated drink causes small bubbles of carbon dioxide to line the inside surface of the can. When you open the can and release the pressure inside, these bubbles expand rapidly and look for an escape route (out the top of the can), if there is liquid in the way, then some of it gets forces out too, which makes a mess of your shirt/face/desk. If you flick the side of the can you dislodge the bubbles so the rise to the surface, then when you open the can they can expand and escape easily without causing the liquid inside to fizz up and spray out.
Having said all of that, the most effective way of making the can not explode is just to let it sit for a while after it's been shaken. This gives the carbon dioxide more time to re-dissolve into the liquid. But we don't always have time for that, so tap away.
