What does petawatt mean?
What does petawatt mean?
Filters. (metrology) An SI unit of power equal to 1015 watts. noun.
How much power is a Petawatt?
A university in Texas is trying to build the most powerful laser in the world. (Inside Science) — Producing a laser with a power of a terawatt — equal to one trillion watts — used to be impressive, but now the forefront of optical research power is measured in 1 quadrillion-watt units known as petawatts.
What does watt mean in science?
power
watt, unit of power in the International System of Units (SI) equal to one joule of work performed per second, or to 1/746 horsepower. An equivalent is the power dissipated in an electrical conductor carrying one ampere current between points at one volt potential difference.
What is bigger than a terawatt?
watt: A watt is a unit of power* equal to one joule per second. Multiply volts with amps and you get watts. A kilowatt (kW) is 1,000 watts, a megawatt (MW) is 1,000 kilowatts, a gigawatt (GW) is 1,000 megawatts, and a terawatt (TW) is 1,000 gigawatts.
What is the measure of PW?
The petawatt (PW) is equal to one quadrillion (1015) watts and can be produced by the current generation of lasers for time scales on the order of picoseconds (10−12 s).
What is after a Petawatt?
So scientists invented the ‘megawatt’ to represent one million watts. The magnitudes of watts step up exponentially after that. A ‘gigawatt’ represents a billion watts, while a ‘terawatt’ is one trillion. Finally, a ‘petawatt’ is a quadtrillion watts – or (1015 watts).
What is a megawatt of electricity?
Megawatt (MW): One million watts of electricity. Megawatt electric (MWe): One million watts of electric capacity. Megawatthour (MWh): One thousand kilowatt-hours or 1million watt-hours.
What is Watts in simple words?
Definition. The watt is a method of measuring the rate of energy transfer of an appliance. A one watt lightbulb, for example, will change one joule of electrical energy into light energy (and some heat/sound) every second, thus “consuming” it. It is a measure of an appliance’s power (appetite for joules).
What is horsepower science definition?
horsepower, the common unit of power; i.e., the rate at which work is done. In the British Imperial System, one horsepower equals 33,000 foot-pounds of work per minute—that is, the power necessary to lift a total mass of 33,000 pounds one foot in one minute.
How long is a Petawatt hour?
A megawatt hour is simply 1000 kilowatt-hours. Other common measurements are gigawatt-hours (1000 megawatt-hours), terawatt-hours (1000 gigawatt-hours), and petawatt-hours (1000 terawatt-hours).
What is a pico watt?
pico-watt (plural pico-watts) One million millionth (10-12) of a watt, abbreviated as pW.
How many watts are in a unit?
1000 Watts
1000 Watts for an hour is 1 unit of energy.
What is a petawatt class?
The definition of ‘petawatt class’ in this context is a laser that delivers $ {>}200~ ext {TW}$. The online version of this article is published within an Open Access environment subject to the conditions of the Creative Commons Attribution licence < http://creativecommons.org/licenses/by/3.0/ >. 1. Motivation 1] in 1998.
How many watts is a petawatt laser?
‘The latest generation of petawatt lasers, for example, can produce focused infrared pulses with an intensity of 10 21 watts per square centimetre.’ ‘Copious numbers of energetic electrons are accelerated to mega-electron-volt energies during the petawatt laser/matter interaction.’
What is the difference between nanowatts and microwatts?
The nanowatt (nW) is equal to one billionth (10 −9) of a watt. Important powers that are measured in nanowatts are also typically used in reference to radio and radar receivers. The microwatt (µW) is equal to one millionth (10 −6) of a watt.
What was the original definition of a Watt?
Siemens’ definition was adopted as the “international” watt. (Also used: 1 ampere 2 x 1 ohm.) The watt was defined as equal to 10 7 units of power in the “practical system” of units. The “international units” were dominant from 1909 until 1948.
