I've wished there was a way to view the current temperature on my HomeScreen. Especially in our cold winters. Up till now the only way was with a jailbroken iPhone. Now its possible without jailbreak.
Damaged or broken motor mounts are arguably the most serious cause of engine vibration. CarsDirect.com suggests that a driver shift between drive and neutral while the vehicle is sitting still. If the vibration lessens while in neutral, the motor mounts may have sustained damage.
Why do transformers hum? Transformer noise is caused by a phenomenon which causes a piece of magnetic sheet steel to extend itself when magnetized. When the magnetization is taken away, it goes back to its original condition. This phenomenon is scientifically referred to as magnetostriction.