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| | Lightning scientists capture an elusive 'blue jet' on video : 03/02 |
 | | Blue jets, in contrast, shoot upward from cloud tops at 100,000 meters per second (about 330,000 feet per second) and are predominantly blue and conical. |
 | | To monitor different parts of the electromagnetic spectrum in the upper atmosphere, the Penn State researchers employed optical instruments, and the Stanford and New Mexico Tech researchers, radio instruments. |
 | | We can measure the electromagnetic pulse both locally and also at very far distances." One of their data detectors, at Palmer Station in Antarctica, identified the blue jet's electromagnetic "fingerprint" from more than 10,000 kilometers (about 6,000 miles) away. |
| news-service.stanford.edu /news/march20/bluejet-320.html (1232 words) |
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