15 Jul '17 16:00>
At ~93M miles away, what is the degree of angle the sun's light would hit the earth?
Originally posted by FreakyKBHThe angle that light strikes the earths surface varies by location because the earth is a sphere. I assumed from your OP you were asking about an imaginary flat earth (and hence one that cannot be measured, observed, tested, repeated, falsified.)
Science deals with what can be measured, observed, tested, repeated, falsified.
The angle of the sun's light is such a phenomenon.
Originally posted by twhiteheadI disagree.
The angle that light strikes the earths surface varies by location because the earth is a sphere. I assumed from your OP you were asking about an imaginary flat earth (and hence one that cannot be measured, observed, tested, repeated, falsified.)
In short, your OP doesn't make any sense. You need to clarify what you are asking.
Originally posted by twhiteheadThe OP is the question which is put to anyone who has an idea on the topic.
When you have figured out what you really want to ask, then post it. Right now you are not making any sense.
Originally posted by FreakyKBHIt is a spherical wavefront and you can calculate the difference between points that light hits at the exact same time, supposing the sun was putting out pulses a trillionth of a second apart and you could know exactly what pulse you are tracking then you can see the wavefront hits Earth at the closest distance and then hits the edge about 24,000 microseconds later.
The OP is the question which is put to anyone who has an idea on the topic.
Given the distance of the source, at what angle will the light hit any object, namely, the earth?
Originally posted by FreakyKBHIt is still unclear what the question is.
The OP is the question which is put to anyone who has an idea on the topic.
Given the distance of the source, at what angle will the light hit any object, namely, the earth?
Originally posted by twhiteheadI'm zeroing in on the angle the light hits the surface from the sun, as a result of their distance from each other.
It is still unclear what the question is.
Sonhouse appears to have taken the question to be the angle between light rays from opposite sides of the sun. Is that the question?
I originally thought the question was what angle the light rays make with the surface of the earth, which is obviously dependent on location and time of day.
Originally posted by FreakyKBHSo you mean the angle the sun subtends on the sky?
I'm zeroing in on the angle the light hits the surface from the sun, as a result of their distance from each other.
Originally posted by twhiteheadWhat do you mean by measuring the arc of the sun?
So you mean the angle the sun subtends on the sky?
Or do you mean the angle between two light rays that originated from one point at the sun? If the latter, then it depends on where they are striking the earth.
[b]It makes sense to me that the light ought to be directly parallel.
Obviously not. We can easily measure the arc of the sun.[/b]