I don't buy that solution. If glue doesn't stick to glue, how does it ever stick two surfaces together? With your hypothesis, the glue would just fill the gaps on each surface - so I'd end up with two very smooth things, which would be inherently less likely to stick together. And you could leave the top off the tube with no problem, whereas everyone knows that to do so means the tube becomes blocked.Sput wrote:It does stick to the inside of its container, but it doesn't stick to itself. Glue works by filling miniscule gaps in surfaces, as its molecules are smaller. As they're all the same size in the tube (bar the sides of the container) they have nothing to get into.russnet wrote:How comes glue never sticks inside it's container?
Edit: New Scientist's 'The Last Word' column from a few years back suggests that it's because glue dries either by the solvent evaporating or by some oxidative reaction - depending on the particular type of glue. Because the tube is air-tight, the solvent can't evaporate or there's insufficient oxygen for the oxidative reaction. That makes sense to me!
Because some people interpret watching them undress as inappropriate behaviour, whereas the actual gynae examination is taken as standard doctor-stuff to do.russnet wrote:Why does a gynaecologist leave the room when you get undressed if they are going to look up there anyway?