Dividing the Year - Solstices, Equinoxes, Cross-Quarters
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- เผยแพร่เมื่อ 28 ก.ย. 2024
- 🌄 This video details the patterns and complexities that arise in dividing the solar year and how ancient people may have set about doing so. This geocentric approach has important applications for archaeoastronomy especially in relation to how changes in orbital configuration have altered the situation over time. The video also looks at the temporal positioning of solstices within the year and compares the modern concept of equinoxes with finding a midpoint in time. Further subdivisions of the year such as cross-quarter days or even 16ths of a year are also discussed.
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🌓The Archaeoastronomy Database facilitates the gathering of crowd-sourced data relating to archaeoastronomy.
🏺 Link to the Database:
www.exploreglob...
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🌒 Form to submit an archaeoastronomy question for future videos:
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Manual Captions/Subtitles have been added.
Imagery/Sources: Wikipedia/Wikimedia Commons, Google Earth, Stellarium
(some images are originals from the Archaeoastronomy Database or open-source remixes for the purposes of archaeoastronomy investigation)
See also: Megalithic Sites in Britain by A. Thom
Music: Ambient String Quartet by LuxeXx
I want to say a big THANK YOU to everyone that has shown interest in the work of this channel and who have shared, subscribed, and supported! It can sometimes be hard to do all this on the side, not just the research which I love, but following through to communicate the ideas and share them in a finished video. I know times are hard for many of you, but if you are able to donate to the channel at even a dollar or two per month on Patreon or a one-time donation on PayPal it goes a LONG WAY to supporting the work. If everyone following the channel on TH-cam or the group on Facebook was able to contribute a small amount, the work could be funded close to full time. In any case, I will continue to do what I love as much as I can. Thank You!
Interesting content. I've been marking the shadows on my back porch for a few years trying to figure out a good place to create an analemma to mark the passage of the sun based on shadows from the corners of the rooftops around my backyard. Still haven't quite figured out the best place to create my analemma. This video had a lot of helpful information. Keep up the good work.
Love it! Creating features to interact with the sun is great fun. ☀ I also have some marks for where the roof shadow strikes at midday over the course of the year. How do you play to outline the analemma when you find the spot?
@@ArchaeoastronomyDatabase It really depends on where I ultimately place it...a wall or on the pavement. If it wants to be on the pavement, I will use a chisel and dremel tool to make some marks in the concrete...maybe place some glass marbles in the Solstice and Equinox spots. Might use a little paint. Haven't decided yet. Have to find the right spot first, then I'll plan out the design. Been marking the solstice/equinox shadows out for years, but just haven't found the right shadow configuration. It's a slow process, but a fun one. It slows things down when I have to miss a marking day. You only get four chances a year. It'll get done eventually.
@@c2rail Sounds great! The analemma is very interesting. In the distant past the north/south length would have been slightly greater but the most noticeable effect over time is the asymmetrical layout of the figure changes when the near/far points in the orbit change relative positions with the solstice and equinoxes, and over VERY long periods the eccentricity of the orbit changes the overall amount of asymmetry.
@@ArchaeoastronomyDatabase One of the things I love about the analemma is it's asymmetry. Makes an attractive figure.
Dobsonian telescope side walk astronomers
Something so profound we should all know but it never crosses are minds great film thank you
That is so generous! Thank you!
Oh nice a brand new video just minutes after I subbed. Great channel, thanks for your work!
Thank you, it really makes the work go better when people are excited and participating!
You lost me at "the earth is spinning".
Really interesting video I saw you on Mythical's live last night an what you were saying interested me so you defo have a new sub, Thanks for sharing this knowledge
I'm glad you found something of interest. Thanks for your support!
A very Big Thank you..I have been trying for years to figure out a big standing stone place where i live.No i think i know how to finaly do it.My standing stones are on a 3 km ridge in a north-south alingment..Thank you againg..Cant wait to try this..
Sounds great! Let us know how it goes!
@@ArchaeoastronomyDatabase My place is at 59`44 N 17`56 E I think the first "part" of the ridge is som kind of horizon observation,the standing stones here are on a straight North-South line and the front of the stones are facing west..The standing stones here are ca 32 before it continues with more downhill so to say..Its a very complex geometric standing stone system im trying to figure out so to say../Maria
Great job!
Thank you!
Thanks
You are most welcome!
☀One interesting aspect is that although some of the knowledge would be cultural such as the intervals chosen and where to begin and end the year, the actual astronomical observations that are fit into those constructs are constrained by the realities of the sky at those times and places which we can extrapolate and compare to the specifics of theories and evidence. Keep in mind that counting out the same intervals today would yield slightly different declination values as the near/fast point in the orbit changes configuration over time.
This is Professor Aleaxander Thom is full flow. he was the originator of Archaeoastronomy. He suggested the megalithic yard 2.72 feet was used by the ancient astronomers designing their monuments in the UK and France.
th-cam.com/video/OPM9XwTPx_0/w-d-xo.html
They were tracking the Sun and Moon
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I'm using a tiny clip from this at the end of my next video, basically using you as a resource for people who prefer to learn on the TH-cams. I'll be linking a couple videos of yours including this one. Thanks for providing this resource, too little on this topic exists.
Hi! Thanks for linking back to me. It is so true that there isn't enough information out there to help people understand the basics. I hope my work can be of some use toward that end.
I love this channel. There is no one esle (??) that tries to explains how observations were made and recorded in order to transmit knowledge to the next generations before writing and being able to count. It seems to me that modern online astronomy tutorials do not mention how we can calculate for example the distance from earth to sun, how to represent the difficult Mars orbit. Nowadays, learning astronomy starts at the black hole level. It is as if biology only discussed T-Rex. Sad.
I'm glad you are enjoying the channel. Thanks for your encouragement! It is so true that modern astronomy often overlooks the investigation of observational methods of the past. Even among archaeoastronomers there are few that understand much beyond basic astronomy, and fewer still that understand all the changing parameters that affected the layout of the sky in the past in order to do a whole sky analysis.
4:47
Psalms 19:1
(To the chief Musician, A Psalm of David.) The heavens declare the glory of God; and the firmament sheweth his handywork.
Psalms 19:2 Day unto day uttereth speech, and night unto night sheweth knowledge.
Psalms 19:3 There is no speech nor language, where their voice is not heard.
Psalms 19:4 Their line is gone out through all the earth, and their words to the end of the world. In them hath he set a tabernacle for the sun,
Psalms 19:5 Which is as a bridegroom coming out of his chamber, and rejoiceth as a strong man to run a race.
Psalms 19:6 His going forth is from the end of the heaven, and his circuit unto the ends of it: and there is nothing hid from the heat thereof.
Nice and tidy. Thx man, and see you @ Mythflix.
The Earth is flat 🌎⃠
naw bruh, I checked