| 释义 |
Definition of Van Allen belt in English: Van Allen beltnounvanˈalən Each of two regions of intense radiation partly surrounding the earth at heights of several thousand kilometres. Example sentencesExamples - This so-called ‘safe-zone’ sits in between the radiation-stuffed Van Allen belts.
- The invisible Van Allen belts that circle Earth in a region known as the magnetosphere trap much of this radiation and serve as an umbrella that protects people in low Earth orbit or below.
- However, it could also be due to a trapped-particle belt around the star - much like the Van Allen belts surrounding the Earth - or even a disk of debris orbiting the star.
- A 6000 kilometer area between the two Van Allen belts was previously thought to be a ‘safe zone’ where lighter, smaller, cheaper, and less heavily shielded satellites could operate.
- Radiation from the Van Allen belt would kill any astronaut that spent enough time there.
Definition of Van Allen belt in US English: Van Allen beltnoun Each of two regions of intense radiation partly surrounding the earth at heights of several thousand kilometers. Example sentencesExamples - This so-called ‘safe-zone’ sits in between the radiation-stuffed Van Allen belts.
- However, it could also be due to a trapped-particle belt around the star - much like the Van Allen belts surrounding the Earth - or even a disk of debris orbiting the star.
- A 6000 kilometer area between the two Van Allen belts was previously thought to be a ‘safe zone’ where lighter, smaller, cheaper, and less heavily shielded satellites could operate.
- The invisible Van Allen belts that circle Earth in a region known as the magnetosphere trap much of this radiation and serve as an umbrella that protects people in low Earth orbit or below.
- Radiation from the Van Allen belt would kill any astronaut that spent enough time there.
|