At Stack Exchange, we have a very expensive espresso machine - professional quality. However, we are having a persistent, companywide problem with its use. It seems that after using the wand to ...
In the UK, speed cameras are usually accompanied by white striped lines on the road. I have always assumed that was a visual reminder to the motorist to "watch your speed- it's about to be checked". ...
I am designing an electronics circuit (gps-tracker/recorder) that I would like to cast in a material for durability and aesthetics, as pictured. I may decide to sell it at some point. It would be ...
I am always shocked when I go to a petrol station. The layout- in the UK, at least- seems to be fairly standard. But it always seems to me to be incredibly inefficient. These are the issues: When ...
I've done this myself on many occasions, even though I know it's a common mistake I need to watch out for. The steps seem to go as follows (with typical thoughts in brackets): Walk up to ...
How does the projection-angle of road arrows change drivers' expectations of the appropriate speed in a curve?
Have any studies been conducted to decide the 'print angle' (anamorphic projection) of road signage? Are there any other expectations involved?
There are 3 designs existing now: Headlight and indicator lights both on the handle. Headlight on the handle but indicator lights on the front panel. Headlight and indicator lights both on the front ...
The AC adapters for a lot of equipment seem to be specifically designed to block the AC outlets around it (this is in the US). Is this a safety feature to minimize the power to that outlet or just ...
When Nintendo brought out it's first game system, the NES, it had a controller with four buttons: Select Start A B However, somewhere, a designer, in their infinite wisdom, decided that the A and ...
I posted a question on the DIY SE site, and it was recommended that maybe a part of it would be better asked here. Consider these two outlets: The blue WR logo indicates that the outlet is ...
In all the advances in usability why do alarm clocks still wake us up on Saturday? Why not only Monday to Friday instead of being set every night? Do we have to rely on our mobile phone if we want ...
When thinking about how (real-world) traffic lights work, I wonder if there is a more intuitive way to display the yellow light. The meaning of Green and Red are states: Green: Ok, you can go! Red: ...