Time is familiar but also a mystery, for without it all the processes in the universe could not happen. Without time, you could not move your eyes from one word to another as you read this sentence.
Time can be divided into many categories ? attoseconds, femtoseconds, picoseconds, nanoseconds, microseconds, milliseconds and seconds.
A healthy person's heartbeat lasts about one second. In the same time it takes for a heart to beat once, Earth travels 30 kilometres around the sun, while the sun travels 275 kilometres on its path through the universe. Light takes 1.3 seconds to reach us from the moon.
There are sixty seconds in one minute. In one minute a newborn baby grows about one milligram. A shrew's heart beats 1000 times. Light from the . . .
The shape of our ear is designed to maximize the sounds we hear. If we had no ear, everything would sound sharp and 'metallic?, but God has designed a large, flexible flap, which catches low, medium and high frequency sounds, and also acts as a buffer. These energy waves are channeled down the ear canal and strike the ear drum, which vibrates against three tiny bones. The bones are designed to catch minute vibrations, yet also protect us from dangerous sounds. Each bones is shaped and fitted in a remarkable way, transferring the energy to a snail-like structure, which analyzes the energy it receives and sends appropriate signals to the brain, which in turn identifies these signals and interprets them for our mind. In this way we can discern between a voice, wind, metal, strings and so on.
A sound seldom hits both our ears simultaneously. Our brain gauges the time interval between the sound's reaching one ear and its arrival at the other ? the interaural time delay ? and automatically makes further calculations about the sound's origin. Based on this minute difference in arrival of the . . .