Energy is being wasted if a toaster is left plugged in after use.
21
The ball on top of a flagpole is called a 'truck'.
24
Scientists in China have built a prototype high-speed maglev train that is theoretically capable of reaching speeds of up to 1,800 mph (2,900 km/h).
1
A fully loaded supertanker traveling at normal speed takes a least twenty minutes to stop.
27
The first hard drive available for the Apple II had a capacity of only 5 megabytes.
46
More than a billion transistors are manufactured every second.
-25
