Sunrise or Sunset

Camera equipment and technique for taking photos.
Forum rules
Please do not use this forum to advertise, sell photos or other products or promote a commercial website. For more details, please see the Terms of Use you agreed to when joining the forum.
Post Reply
User avatar
Barnold41
Posts: 290
Joined: 9/8/2016
14ers: 13
13ers: 12

Re: Sunrise or Sunset

Post by Barnold41 »

Dunno if it's been mentioned, but it's interesting that we still refer to sunrise and sunset as if we live in a geocentric society. We have long understood that this is not the case and yet we continue to pretend that the sun is "rising" in the east and "setting" in the west.
User avatar
geojed
Posts: 902
Joined: 6/30/2009
14ers: 58 8
13ers: 133 16
Trip Reports (29)

Re: Sunrise or Sunset

Post by geojed »

Barnold41 wrote: Tue Oct 19, 2021 10:02 am Dunno if it's been mentioned, but it's interesting that we still refer to sunrise and sunset as if we live in a geocentric society. We have long understood that this is not the case and yet we continue to pretend that the sun is "rising" in the east and "setting" in the west.
It’s called a “Frame of Reference” in physics. (See image below for an example) Of course we are a geocentric society since we are all on this geoid we call Earth which is moving/rotating through the vacuum of space. Since we can’t feel the Earth’s movement, from our frame of reference we are stationary and it is the Sun that is moving/rising/setting.
074425AE-E216-446B-997E-FB043A3F375C.jpeg
074425AE-E216-446B-997E-FB043A3F375C.jpeg (113.54 KiB) Viewed 887 times
This Scientific American webpage (https://www.scientificamerican.com/arti ... earth-mov/) states that:
  • Earth Rotates at ~1000mph (at the equator),
  • Earth orbits the Sun at ~67,000mph,
  • Our solar system orbits the center of our galaxy at 490,000mph,
  • Our galaxy is moving towards the "Great Attractor" at 1000km/s.
  • The closest we can come to a "universal frame of reference" is the CBR (Cosmic Background Radiation), which permeates all space, and we are moving 390km/s with respect to it.
Last edited by geojed on Tue Oct 19, 2021 12:47 pm, edited 6 times in total.
• It's by getting away from life that we can see it most clearly... It's by depriving ourselves of the myriad of everyday experiences that we renew our appreciation for them...I've learned from my experiences in the mountains that I love life. — Dave Johnston
• Mountains are not climbed merely to reach a geographical location — but as personal and spiritual challenges to the participants. — David Stein
User avatar
timewarp01
Posts: 88
Joined: 8/30/2017
14ers: 44 8
13ers: 32 4
Trip Reports (4)

Re: Sunrise or Sunset

Post by timewarp01 »

Barnold41 wrote: Tue Oct 19, 2021 10:02 am Dunno if it's been mentioned, but it's interesting that we still refer to sunrise and sunset as if we live in a geocentric society. We have long understood that this is not the case and yet we continue to pretend that the sun is "rising" in the east and "setting" in the west.
I mean if you really want to get pedantic about it a heliocentric model has no intrinsic merit over a geocentric one as far as physics is concerned. You can construct a perfectly valid set of physical rules for a non-inertial reference frame if you want to, your kinematics equations will just have a few extra terms. It is mathematically impossible to prove that the Earth is not the center of the universe. You can read more about that here: https://en.wikipedia.org/wiki/Principle_of_relativity
User avatar
Barnold41
Posts: 290
Joined: 9/8/2016
14ers: 13
13ers: 12

Re: Sunrise or Sunset

Post by Barnold41 »

geojed wrote: Tue Oct 19, 2021 10:23 am :lol: Umm, it’s called a “Frame of Reference” in physics. (See image below for an example) Of course we are a geocentric society since we are all on this geoid we call Earth which is moving/rotating through the vacuum of space. Since we can’t feel the Earth’s movement, from our frame of reference we are stationary and it is the Sun that is moving/rising/setting.
074425AE-E216-446B-997E-FB043A3F375C.jpeg
This Scientific American webpage (https://www.scientificamerican.com/arti ... earth-mov/) states that:
  • Earth Rotates at ~1000mph (at the equator),
  • Earth orbits the Sun at ~67,000mph,
  • Our solar system orbits the center of our galaxy at 490,000mph,
  • Our galaxy is moving towards the "Great Attractor" at 1000km/s.
  • The closest we can come to a "universal frame of reference" is the CBR (Cosmic Background Radiation), which permeates all space, and we are moving 390km/s with respect to it.
timewarp01 wrote: Tue Oct 19, 2021 11:57 am I mean if you really want to get pedantic about it a heliocentric model has no intrinsic merit over a geocentric one as far as physics is concerned. You can construct a perfectly valid set of physical rules for a non-inertial reference frame if you want to, your kinematics equations will just have a few extra terms. It is mathematically impossible to prove that the Earth is not the center of the universe. You can read more about that here: https://en.wikipedia.org/wiki/Principle_of_relativity

I don't have much experience in physics, so thanks for sharing this information.
Skimo95
Posts: 87
Joined: 5/19/2021
14ers: 58 5 14
13ers: 69

Re: Sunrise or Sunset

Post by Skimo95 »

Both have their benefits! Keep the pics coming
Attachments
FC895DAC-8B51-4A43-8621-D8A998D54ED2.jpeg
FC895DAC-8B51-4A43-8621-D8A998D54ED2.jpeg (181.19 KiB) Viewed 829 times
F8A0BCC2-687A-4454-B2C4-E68836B56ED1.jpeg
F8A0BCC2-687A-4454-B2C4-E68836B56ED1.jpeg (198.26 KiB) Viewed 829 times
User avatar
Mark Curtis
Posts: 541
Joined: 7/27/2004
14ers: List not added
Contact:

Re: Sunrise or Sunset

Post by Mark Curtis »

http://www.flickr.com/photos/46092977@N07/" onclick="window.open(this.href);return false;
User avatar
Mark Curtis
Posts: 541
Joined: 7/27/2004
14ers: List not added
Contact:

Re: Sunrise or Sunset

Post by Mark Curtis »

http://www.flickr.com/photos/46092977@N07/" onclick="window.open(this.href);return false;
User avatar
Mark Curtis
Posts: 541
Joined: 7/27/2004
14ers: List not added
Contact:

Re: Sunrise or Sunset

Post by Mark Curtis »

http://www.flickr.com/photos/46092977@N07/" onclick="window.open(this.href);return false;
User avatar
Gene913
Posts: 399
Joined: 12/15/2006
14ers: 58
13ers: 10
Trip Reports (7)
Contact:

Re: Sunrise or Sunset

Post by Gene913 »

Sunset from the home place today here in Bucyrus KS

Bucyrus sunset 2 12 01 2021.jpg
Bucyrus sunset 2 12 01 2021.jpg (248.48 KiB) Viewed 93 times
"If you have faith like a grain of mustard seed, and you say to this mountain, 'move from here to there,' it will move, and nothing will be impossible for you." Matthew 17:21
User avatar
Gene913
Posts: 399
Joined: 12/15/2006
14ers: 58
13ers: 10
Trip Reports (7)
Contact:

Re: Sunrise or Sunset

Post by Gene913 »

One More
Attachments
Bucyrus sunset 1 12 01 2021.jpg
Bucyrus sunset 1 12 01 2021.jpg (281.23 KiB) Viewed 83 times
"If you have faith like a grain of mustard seed, and you say to this mountain, 'move from here to there,' it will move, and nothing will be impossible for you." Matthew 17:21
Post Reply