| Title | Comment | Keywords |
|---|---|---|
| Electromagnetic Radiation | 11:35 - 12:49 (01:14) / 1.7 MB | "John Everett", satellite, "remote sensing", "electromagnetic radiation", "Earth's surface", energy, "visible light", "gamma ray", X-ray, "ultraviolet radiation", "radio wave", microwave, "infrared radiation", humans, "spectral band" |