> Every car I've ever seen has hinges which try to force the door fully open 
> or fully closed. Now you can see why fully closed would be a good idea. 
> But if you're parked in a tight space, it's really irritating that you 
> can't let go of the door because you'll either get a door in your face, or 
> the door will spring open and scratch up the car next to you.
>
> Such a simple problem, yet nobody has solved it. WHY?!! >_<

Huh? Every car I've had for decades has a soft "stop" half way where the 
door is quite stable.  You can then push it a bit harder and it locks all 
the way out.  Try it!

> Why are the downstairs taps connected to the mains, but the upstairs ones 
> connected to a tank?

To stop you having mains pressure cold (~1-5 bar) next to tank pressure hot 
(~0.2 bar) in the bath.  Imagine what happens when you connect one of those 
old-fashioned shower adapters to the bath taps, turn hot and cold to full 
and then turn *off* the shower head.  Fortunately now we have taps with 
back-flow prevention valves and fancy mixer taps to avoid this problem. 
Many houses don't have a cold tank, and some won't have a hot tank either 
(the hot is heated on-demand by the boiler).

Post a reply to this message