Quick Answer: What Is Average Power Formula?

What is the power of laser?

Over their 50-year history, lasers have gone from producing powers of a few hundred watts to greater than a petawatt, or a quadrillion watts.

Several key technological jumps have allowed researchers to compress laser beams into infinitesimally short pulses, which amplifies their peak power..

How do you calculate average power?

A simple way to think of the average power is just the peak power times the duty factor. In other words, you’re averaging the power over the course of one on/off cycle of the laser. So, if for example, your laser is 10 kW, and it pulses for 1 ns at 1 kHz (in other words, its duty cycle is 1/1,000,000 or 0.0001%).

What is Laser peak power?

Peak power is formally defined as the maximum optical power a laser pulse will attain. … A laser with high peak power is one that has pulses that are either high in energy per pulse or short in pulse width, but generally, both conditions are combined.

What is power in physics and examples?

As is implied by the equation for power, a unit of power is equivalent to a unit of work divided by a unit of time. Thus, a Watt is equivalent to a Joule/second. … Thus, the power of a machine is the work/time ratio for that particular machine. A car engine is an example of a machine that is given a power rating.

What are the 3 dimensions of power?

The three dimensions of power This theory claims that power is exercised in three ways: decision-making power, non-decision-making power, and ideological power. Decision-making power is the most public of the three dimensions.

How do you calculate the power of a laser?

A laser is operated at a 5 kHz repetition rate, at an average power of 2 Watts. Using this information, we can calculate the energy per pulse as follows: E = 2/5000 = .0004 Joules = 0.4 x 10 Joules (0.4 millijoules) per pulse. P = (.4 x 10 )/(150 x 10 ) = 2.667 x 10 Watts (2.67 kilowatts).

What is peak power in radar?

The energy content of the pulse is equal to the peak (maximum) power level of the pulse multiplied by the pulse width. … However, meters used to measure power in radar system do so over a period of time that is longer than the pulse width.

What is average power?

Average power is defined as the ratio of total work done by the body to the total time taken by the body. The unit of average power is kiloWatt hour.

What is the peak power?

The peak power is the maximum power that the power supply can sustain for a short time and is sometimes called the peak surge power. The peak power differs from the continuous power which refers to the amount of power that the supply can supply continuously.

What is work formula?

The work is calculated by multiplying the force by the amount of movement of an object (W = F * d). A force of 10 newtons, that moves an object 3 meters, does 30 n-m of work. A newton-meter is the same thing as a joule, so the units for work are the same as those for energy – joules.

What is the efficiency formula?

Efficiency is often measured as the ratio of useful output to total input, which can be expressed with the mathematical formula r=P/C, where P is the amount of useful output (“product”) produced per the amount C (“cost”) of resources consumed.

How do you calculate work?

Work can be calculated with the equation: Work = Force × Distance. The SI unit for work is the joule (J), or Newton • meter (N • m). One joule equals the amount of work that is done when 1 N of force moves an object over a distance of 1 m.

What is a power in math?

more … The power (or exponent) of a number says how many times to use the number in a multiplication. It is written as a small number to the right and above the base number.