| Source of em radition | wavelength (m) | photon energy (J) |
photon energy(eV) |
|---|---|---|---|
| 60 Hz power line | 5.00 x 106 | 3.98 x 10-32 | 2.48 x 10-13 |
| AM radio | 3.00 x 102 | 6.63 x 10-28 | 4.14 x 10-9 |
| TV/FM radio | 3.15 | 6.32 x 10-26 | 3.94 x 10-7 |
| cell phone (900MHz) | 3.33 x 10-1 | 5.98 x 10-25 | 3.73 x 10-6 |
| microwave oven | 1.00 x 10-2 | 1.99 x 10-23 | 1.24 x 10-4 |
| infrared from hot object |
5.00 x 10-6 | 3.98 x 10-20 | 2.48 x 10-1 |
| visible red light (Halpha Balmer) from ionized hydrogen atoms |
6.56 x 10-7 | 3.03 x 10-19 | 1.89 |
| visible (violet) | 4.00 x 10-7 | 4.98 x 10-19 | 3.11 |
| solar ultravolet A |
3.60 x 10-7 | 5.53 x 10-19 | 3.45 |
| solar ultraviolet B |
3.00 x 10-7 | 6.63 x 10-19 | 4.14 |
| solar ultraviolet C |
2.75 x 10-7 | 7.24 x 10-19 | 4.52 |
| ultraviolet (Lalpha Lyman) from ionized hydrogen atoms |
1.21 x 10-7 | 1.64 x 10-18 | 1.03 x 101 |
| soft X-ray | 2.00 x 10-9 | 9.95 x 10-17 | 6.21 x 102 |
| hard X-ray | 1.00 x 10-13 | 1.99 x 10 -12 | 1.24 x 107 |
| low energy gamma ray | 1.00 x 10-13 | 1.99 x 10-12 | 1.24 x 107 |
| high energy gamma ray | 1.00 x 10-21 | 1.99 x 10-4 | 1.24 x 1015 |