Requirements for seeing a Total Solar Eclipse?

  • Thread starter Thread starter Sarah0001
  • Start date Start date
  • Tags Tags
    Eclipse Solar
AI Thread Summary
To see a total solar eclipse, the Moon must align with the Earth and Sun during the new moon phase, allowing its umbra to fall on Earth. The observer must be located within this umbra to experience totality. For a partial solar eclipse, the Moon's penumbra casts a wider shadow, but the Moon's orbit does not need to be nearly aligned with Earth's orbit. It can still occur even if the orbits are orthogonal, as long as the Moon crosses the direct line between the Earth and Sun. Understanding these orbital dynamics is crucial for predicting eclipse visibility.
Sarah0001
Messages
31
Reaction score
1
Homework Statement
Does the orbit of the moon, at the time of the new moon have to lie in the same plane as the Earth's Orbit around the Sun for the Moon's shadow to fall onto the Earth ( in order to have a solar eclipse, whether it be partial, total, or annular)?
Relevant Equations
Solar Eclipse
From my understanding, for an observer to see a total solar eclipse, 1) the Moon's orbit has to be near aligned with the Earth's Orbit, 2)such that the New moon's Umbra falls on Earth, and 3) the observer must be within this cast umbra. But for a partial solar eclipse, since the Penumbra of the new moon has a wider casting, does the Moon's orbit still have to be nearly aligned with Earth's?
 
Physics news on Phys.org
Sarah0001 said:
for an observer to see a total solar eclipse, 1) the Moon's orbit has to be near aligned with the Earth's Orbit,
Umm... why?
 
  • Like
Likes berkeman
haruspex said:
Umm... why?
I meant the Moon has to be in line with the Earth and Sun
 
Sarah0001 said:
I meant the Moon has to be in line with the Earth and Sun
That is correct, but it does not require the two orbits to be near aligned. It could still happen even with the orbits orthogonal.
 
haruspex said:
That is correct, but it does not require the two orbits to be near aligned. It could still happen even with the orbits orthogonal.
Thank you, so the moon just has to cross the straight line path between the Earth and Sun during the new moon phase
 
Sarah0001 said:
Thank you, so the moon just has to cross the straight line path between the Earth and Sun during the new moon phase
Right.
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
Thread 'Voltmeter readings for this circuit with switches'
TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
Back
Top