Imagine being on another planet, orbiting a different star not our own sun. You look up at the sky in the daytime and instead of the familiar blue color of Earth’s sky it appears green! Based on your knowledge of principles of black-body radiation, atmospheric scattering and absorption, discuss possible explanations for this.
Attempt at answer: could it be possible that the different star is releasing more light in the green wavelengths than any other wavelength, and is thus penetrating deeper into the other planet's atmosphere?
it is a case of a phenomenon called Rayleigh's Scattering causes light to scatter when it passes through particles that have a diameter one-tenth that of the wavelength of light.We know sunlight is made up of different colours, but because of the elements in the atomosphere, the colour blue is scattered more efficiently than other colours making the sky appear blue. Similarly if the sky is looking green on some other planet then the atmospheric condition and its elemental structure would support green light reflection rather than other colours.
When we look up at the sky, the red cones respond to small amount of scattered red light, but also less strongly to orange and yellow wavelengths. the green cone respond to yellow and the more strongly scattered green and green-blue wavelengths. The blue cones are stimulated by colors near blue wavelengths, which are very strong scattered. If there were no indigo and violet in the spectrum, the sky would appear blue with a slight green tinge.
Imagine being on another planet, orbiting a different star not our own sun. You look up...
Physics Lab Assignment This particular discovery is also an example of how those who deserve an award sadly are not always the ones who receive it. Read the following passage focusing your attention on the scientific procedures and scientific abilities you have been developing throughout the course. The discovery of pulsars –rotating neutron stars that generate regular pulses of radiation at their spin rate- was fortuitous. A group of astrophysicists from Cambridge University lead by Anthony Hewish was looking for...
The discovery of pulsars –rotating neutron stars that generate regular pulses of radiation at their spin rate- was fortuitous. A group of astrophysicists from Cambridge University lead by Anthony Hewish was looking for quasars (these are extremely bright, compact and remote objects that emit up to a thousand times as much light as our entire galaxy). For that purpose the research group designed a radio-telescope that was built on the flat fields surrounding Cambridge in central England. This telescope did...