petawatt | 1 PW | 2 PW | 3 PW | 4 PW | 5 PW | 6 PW | 7 PW | 8 PW | 9 PW | 10 PW | 11 PW | 12 PW | 13 PW | 14 PW | 15 PW | 16 PW | 17 PW | 18 PW | 19 PW | 20 PW | 21 PW | 22 PW | 23 PW | 24 PW | 25 PW | 26 PW | 27 PW | 28 PW | 29 PW | 30 PW | 31 PW | 32 PW | 33 PW | 34 PW | 35 PW | 36 PW | 37 PW | 38 PW | 39 PW | 40 PW | 41 PW | 42 PW | 43 PW | 44 PW | 45 PW | 46 PW | 47 PW | 48 PW | 49 PW | 50 PW | 51 PW | 52 PW | 53 PW | 54 PW | 55 PW | 56 PW | 57 PW | 58 PW | 59 PW | 60 PW | 61 PW | 62 PW | 63 PW | 64 PW | 65 PW | 66 PW | 67 PW | 68 PW | 69 PW | 70 PW | 71 PW | 72 PW | 73 PW | 74 PW | 75 PW | 76 PW | 77 PW | 78 PW | 79 PW | 80 PW | 81 PW | 82 PW | 83 PW | 84 PW | 85 PW | 86 PW | 87 PW | 88 PW | 89 PW | 90 PW | 91 PW | 92 PW | 93 PW | 94 PW | 95 PW | 96 PW | 97 PW | 98 PW | 99 PW | 100 PW |
microwatt | 1.0 × 1021 µW | 2.0 × 1021 µW | 3.0 × 1021 µW | 4.0 × 1021 µW | 5.0 × 1021 µW | 6.0 × 1021 µW | 7.0 × 1021 µW | 8.0 × 1021 µW | 9.0 × 1021 µW | 1.0 × 1022 µW | 1.1 × 1022 µW | 1.2 × 1022 µW | 1.3 × 1022 µW | 1.4 × 1022 µW | 1.5 × 1022 µW | 1.6 × 1022 µW | 1.7 × 1022 µW | 1.8 × 1022 µW | 1.9 × 1022 µW | 2.0 × 1022 µW | 2.1 × 1022 µW | 2.2 × 1022 µW | 2.3 × 1022 µW | 2.4 × 1022 µW | 2.5 × 1022 µW | 2.6 × 1022 µW | 2.7 × 1022 µW | 2.8 × 1022 µW | 2.9 × 1022 µW | 3.0 × 1022 µW | 3.1 × 1022 µW | 3.2 × 1022 µW | 3.3 × 1022 µW | 3.4 × 1022 µW | 3.5 × 1022 µW | 3.6 × 1022 µW | 3.7 × 1022 µW | 3.8 × 1022 µW | 3.9 × 1022 µW | 4.0 × 1022 µW | 4.1 × 1022 µW | 4.2 × 1022 µW | 4.3 × 1022 µW | 4.4 × 1022 µW | 4.5 × 1022 µW | 4.6 × 1022 µW | 4.7 × 1022 µW | 4.8 × 1022 µW | 4.9 × 1022 µW | 5.0 × 1022 µW | 5.1 × 1022 µW | 5.2 × 1022 µW | 5.3 × 1022 µW | 5.4 × 1022 µW | 5.5 × 1022 µW | 5.6 × 1022 µW | 5.7 × 1022 µW | 5.8 × 1022 µW | 5.9 × 1022 µW | 6.0 × 1022 µW | 6.1 × 1022 µW | 6.2 × 1022 µW | 6.3 × 1022 µW | 6.4 × 1022 µW | 6.5 × 1022 µW | 6.6 × 1022 µW | 6.7 × 1022 µW | 6.8 × 1022 µW | 6.9 × 1022 µW | 7.0 × 1022 µW | 7.1 × 1022 µW | 7.2 × 1022 µW | 7.3 × 1022 µW | 7.4 × 1022 µW | 7.5 × 1022 µW | 7.6 × 1022 µW | 7.7 × 1022 µW | 7.8 × 1022 µW | 7.9 × 1022 µW | 8.0 × 1022 µW | 8.1 × 1022 µW | 8.2 × 1022 µW | 8.3 × 1022 µW | 8.4 × 1022 µW | 8.5 × 1022 µW | 8.6 × 1022 µW | 8.7 × 1022 µW | 8.8 × 1022 µW | 8.9 × 1022 µW | 9.0 × 1022 µW | 9.1 × 1022 µW | 9.2 × 1022 µW | 9.3 × 1022 µW | 9.4 × 1022 µW | 9.5 × 1022 µW | 9.6 × 1022 µW | 9.7 × 1022 µW | 9.8 × 1022 µW | 9.9 × 1022 µW | 1.0 × 1023 µW |
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). One such laser is the Lawrence Livermore's Nova laser, which achieved a power output of 1.25 PW (1.25×1015 W) by a process called chirped pulse amplification. The duration of the pulse was roughly 0.5 ps (5×10−13 s), giving a total energy of 600 J.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
petawatt | PW | = 1015 W | = 1015 W | Metric system SI |
petawatts | microwatts | petawatts | microwatts |
---|---|---|---|
1 | = 1.0E+21 | 6 | = 6.0E+21 |
2 | = 2.0E+21 | 7 | = 7.0E+21 |
3 | = 3.0E+21 | 8 | = 8.0E+21 |
4 | = 4.0E+21 | 9 | = 9.0E+21 |
5 | = 5.0E+21 | 10 | = 1.0E+22 |
The microwatt (µW) is equal to one millionth (10−6) of a watt. Important powers that are measured in microwatts are typically stated in medical instrumentation systems such as the EEG and the ECG, in a wide variety of scientific and engineering instruments and also in reference to radio and radar receivers. Compact solar cells for devices such as calculators and watches are typically measured in microwatts.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
microwatt | µW | = 10-6 W | = 10-6 W | Metric system SI |
microwatts | petawatts | microwatts | petawatts |
---|---|---|---|
1 | = 1.0E-21 | 6 | = 6.0E-21 |
2 | = 2.0E-21 | 7 | = 7.0E-21 |
3 | = 3.0E-21 | 8 | = 8.0E-21 |
4 | = 4.0E-21 | 9 | = 9.0E-21 |
5 | = 5.0E-21 | 10 | = 1.0E-20 |
petawatts | microwatts |
---|---|
1 | = 1.0 × 1021 |
1.0 × 10-21 | = 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |