Time unit-Definition of seconds

The unit of time can range from extremely small to extremely large. The following describes how to express a feeling of ultra-large time span.
One billion seconds (one million in one second)
Scientists use time seconds to time transient events.
Researchers have used a stable high-speed laser to generate a pulse of only 250 seconds. Although the time interval is too short to be imagined, it is still very long compared with the Plank constant. It is considered to be the shortest time possible for a constant of about 10-43 seconds.
One second per second (one thousandth of one second)
It takes 10 to 100 seconds for an atom in a molecule to complete a typical vibration. It usually takes several hundred flying seconds to complete a rapid chemical reaction. The interaction between light and pigment on the retina (the process of Visual Production) takes about 200 seconds.
One second (1‰ of every seconds)
The operation of the fastest transistor is measured in milliseconds. A rare sub-atomic particle produced by a high-energy accelerator, which has a intrinsic second before decay. The average time for the hydrogen bond between molecules in the room temperature water is 3 per second.
One nanosecond (one thousandth of a second)
In a vacuum, light only transmits 30 cm in a nanosecond (less than one step ). A personal computer's microprocessor executes a command (for example, adding two numbers) about 2 to 4 nanoseconds. Another rare sub-atomic particle K-Meon exists for 12 nanoseconds.
One microsecond (one second per million)
In this time, the light can transmit 300 meters, which is about the length of three football fields, but the sound waves at sea level can only transmit 1/3mm. High-speed commercial flash devices flash every time for about 1 microsecond. A barrel of explosives exploded about 24 microseconds after its fuses were burned out.
One millisecond (1‰ seconds)
The minimum exposure time of a typical camera is one millisecond. A housefly fan its wings every three milliseconds, and a bee fan it every Five milliseconds. Since the Moon's orbit around the Earth gradually becomes wider, it takes two milliseconds to circle every year. In computer science, a 10-millisecond interval is called a jiffy.
10 to 10 seconds
In the fable, the "blink of an eye" is a tenth of a second. Human ears need a tenth of a second to tell the echo. Passengers 1, a flight away from the solar system, fly about two kilometers from the sun every 10 seconds. At this time, the hummingbird can beat its wings seven times. It is the tuning fork vibration set for A to C four times.
One second
The heartbeat of a healthy person lasts for about one second. On average, Americans eat 350 pizzas each second. The earth rotates around the Sun 30 kilometers every second, while the sun travels 274 kilometers across the galaxy. One second is not enough for the moonlight to reach the Earth (it takes 1.3 seconds ). Traditionally, one second is one of 60 points per day, but scientists have given a more accurate definition: 9 133 192 of the super-fine-energy transition of the ground state of the 631 Atom
The duration of the 770 cycle is called one second.