By - verma2470
I saw this video I was very very young .... Nostalgia... Mmmm😭
His voice brings me great comfort. I watched the original planet earth as a kid, among other stuff that had Sagan in it. He makes me feel safe and happy and was part of the reason I studied earth and soil sciences in college
Carl Sagan was so fine
Right?! His voice was wonderful.
Why do u gotta make it weird
Why does human attraction make you feel that way?
Ah I don’t think it’s weird. He seemed like a really kind and of course intelligent guy. He also happened to be very handsome imo
Inb4 flat earthers raid this post
Not a flat Earthier, but curious how they knew both cast different shadows are the exact same time.
Wasn’t time measured with sun dials? And the journey would take a while, so it’s not like they could go measure the other shadow the next day to account for the difference in sun position over the weeks. Thanks
It wouldn't be difficult at all. Simply having a correspondent at the opposite obelisk given a set time of day and date to measure the shadow. The two measurements would then later be synced as the correspondant would later arrive with his data to compare.
But some backwoods hick told me it’s flat. They clearly know more than Sagan ever did. /s
I always though Sagan was a geek, not Greek
I can't listen to Sagan without thinking of mr smith
Now I can’t unhear it.
I read that Hugo actually used his voice as inspiration.
I'm hard now
Not a flat earther, but the difference in shadow could also be explained by a very close sun.
But we already knew the sun wasn’t close due to observations of its position in the sky at dawn and dusk compared to stars.
Elaborate if you would please.
I can't think of a way this would show the sun's proximity. Sorry got downvoted, your original comment and reply seem to be genuine.
Thank you for the kind words. And yes, I do want to understand but I guess they don't want to explain their point.
Reasonable argument if you made it 500 years ago. We do now have satellites and technology - so it’s not a close sun lmao.
I'm not making an argument that the sun is close to earth. I am simply entertaining a rebuttal and it's nice to see the other constructive replies besides yours.
Clearly the earth is round. I'm speaking like someone at the time of this discovery because it would be interesting to hear what Eratosthenes would say.
Put yourself in the shoes of the ancients. How would you reply to my "argument" then?
Due to the moon terminator illusion, the sun most likely has to be far away relative to the moon. Not sure if the ancients knew of it, but in modern times it's probably one of the simpler arguments as to why the sun has to be far away
Great point, I've learned something new today. I've thought about this while gazing at the moon and did not know it had been officially classified as that term.
Aristoarches of Samos had already done calculations on the distance of the Sun two decades prior to Eratosthenes. Eratosthenes probably knew that. Eratosthenes himself also made calculations to attempt the same. Both were way out but both came to the same conclusion that they weren't dealing with a near Sun.
In the end that measurement was irrelevant to this experiment and was much more accurate the the distance between the Earth and the Sun.
For this to work the measurements would have to be at the same time. What was the a Chieng Greek time keeping / clock mechanism? (Legit question not doubting)
Mid day was a well calculated and documented event. They made monuments (i.e. sun dials) that could tell you such things if you couldn’t calculate it yourself.
No sundials. He used the Solstice and a surveyor to calculate the distance.
Syene was on the Tropic of Cancer and it was known that on the solstice that the Sun shone on the bottom of a well at noon. He took his measurement when the Sun was at it's highest on the same day in Alexandria and then got a surveyor to measure the distance between the two. Once he had that he could complete his calculation.
The more I think about it, you really don't need a timekeeping device. You could just measure the maximum length of each shadow on any given day and compare the relative lengths between the two locations.
No. The advantage to this experiment was that Syene and Alexandria were nearly on the same latitude. That is also critical.
Where's the source of this video?
You can find it on YouTube, i think
Oooh, thanks! I think I found it here:
Why did he intonate like that?
Was he talking about the direction of the shadow rather than the length? I’m confused.
What calculations did they use on the shadows to determine it was 7 degrees?
Damn 4th grade for me.
What say flat earthers? I’m 59 and we were taught this scientific fact in 5th grade.
How would they be able to have an accurate understanding of both places having curvature that differs from one another. I guess if they drew pictures of the shadows throughout the day and compared them, that would make sense but that’s my best guess.
Thank you that makes more sense
Yeah but they did not and it is not.
Yeah except they did and it is
How do you weirdos explain the difference in shadow lengths, or times of sunrise and sunset at different latitudes? Explain the solstices and equinoxes? The seasons?
They don’t think about these things
They literally don’t think at all. Air heads.
You ever heard of satellites or telescopes? How about a camera? This whole thing has been figured out.