At what time will a star be seen from a place ?

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The discussion revolves around determining when a star will be visible from a specific location, highlighting the complexities of celestial visibility due to Earth's rotation. Participants express confusion about the problem's nature and seek clarification on the relationship between longitude and the visibility of stars. A key point mentioned is that a 20° difference in longitude corresponds to an 80-minute time difference in star visibility. The conversation also touches on the assumption that there are no obstructions like buildings or hills affecting visibility. Overall, the thread emphasizes the need for understanding the basics of astronomy and Earth's movement to solve such problems.
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Homework Statement



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Homework Equations

The Attempt at a Solution


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Honestly speaking I have absolutely no idea about this problem . This is the first time I have seen a problem of this nature .I am not even sure which chapter of Intro Physics text does this problem belong to .

I would really appreciate if someone could help me with the problem .

Many thanks .
 

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I don't know but upon reading, this might give you a hint. "The North Star is visible every night in about the same place."
 
Sorry I didn't get your hint . Could you elaborate your response .
 
The Earth rotates... When does the green man see the star rising, later or sooner than the blue man does?
upload_2017-6-2_7-52-45.png
 
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OK .

20° longitude difference = 80 minutes

Option d)

Right ?
 
Vibhor said:
OK .

20° longitude difference = 80 minutes

Option d)

Right ?
I hope so. Supposing there are no big building or hills hiding the raising sun :)
 
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Thank you so much :smile: .
 

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