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Prelims Related News
By Jupiter! NASA’s new revelation:
Context
NASA’s Earth-bound Gemini North telescope has beamed back a stunning image of Jupiter showing haze particles over a range of altitudes.
What has happened?
- As the Juno spacecraft orbits Jupiter, the Gemini telescope is providing high-resolution images to help guide its exploration of the giant planet.
- In addition to images captured using adaptive optics, longer wavelength filter on the telescope are used to look at cloud opacity on the planet.
- The observations trace vertical flows that cannot be measured any other way, illuminating the weather, climate and general circulation in Jupiter’s atmosphere.
- Juno spacecraft was 5.5 million miles (8.9 million kilometers) from its July 4th appointment with Jupiter. Over the past two weeks, several milestones occurred that were key to a successful 35-minute burn of its rocket motor, which will place the robotic explorer into a polar orbit around the gas giant.
| Details on Juno Spacecraft · Juno is a NASA space probe orbiting the planet Jupiter. · Juno’s mission is to measure Jupiter’s composition, gravity field, magnetic field, and polar magnetosphere. It will also search for clues about how the planet formed, including whether it has a rocky core, the amount of water present within the deep atmosphere, mass distribution, and its deep winds, which can reach speeds of 618 kilometers per hour. |
Conclusion
The combination of Earth-based and spacecraft observations is a powerful one-two punch in exploring Jupiter.
Sharpest laser can help test Einstein’s theory:
Context
Scientists have developed the world’s sharpest laser with record-breaking precision that can help make optical atomic clocks more precise as well as test Einstein’s theory of relativity.
About laser lights
- Theoretically, laser light has only one colour, frequency or wavelength.
- In reality, however, there is always a certain linewidth.
- This precision is useful for various applications such as optical atomic clocks, precision spectroscopy, radio astronomy and for testing the theory of relativity.
- More than 50 years have passed since the first technical realization of the laser, and we cannot imagine how we could live without them today.
Applications of Laser light
- Laser light is used in numerous applications in industry, medicine and information technologies.
- Lasers have brought about a real revolution in fields of research and in metrology — or have even made some new fields possible in the first place.
- One of laser’s outstanding properties is the excellent coherence of the emitted light.
- Ideally, laser light has only one fixed wavelength or frequency. In practice, the spectrum of most types of lasers can, however, reach from a few kHz to a few MHz in width, which is not good enough for numerous experiments requiring high precision.
Einstein’s General Theory of Relativity
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