Tracking down Phil Trans xxxv 637

  • Thread starter Thread starter tpv
  • Start date Start date
  • Tags Tags
    Tracking
AI Thread Summary
Bradley's experiments revealed that Gamma Draconis fluctuated in angle by 20 arc-seconds per year, prompting a search for his original 1729 report to the Royal Society. The report is cited as "Phil Trans xxxv 637," but locating it online has proven challenging. It was noted that the Royal Society has digitized their Transactions published before 1923, making them accessible. A direct link to Bradley's letter to Halley is provided, along with another work by Dr. August Busch on data reduction of Bradley's observations available at the Internet Archive. The discussion concludes with gratitude for the assistance in finding these resources.
tpv
Messages
6
Reaction score
1
I've been doing some study and repeatedly end up again at Bradley's experiments that discovered the way gamma draconis fluctuated in angle to the tune of 20 arc-seconds per year. I've been trying to track down a bunch of questions on this, but have not succeeded, so I thought I would see if I couldn't find Bradley's report directly, and see what he wrote. But search as I might, I have been unable to locate it on the web. Does anyone know if there is a web-site that provides access to original published reports such as Bradley's 1729 report to the Royal Society? Everyone quotes his report as coming from "Phil Trnas xxxv 637", but where do I find this report (in English)?
 
Astronomy news on Phys.org
The reference is to the Philosophical Transactions of the Royal Society in London, Series A, Vol. 35, p. 637.

The Royal Society is still a going concern, and their Transactions published before 1923 have been scanned and put online.

Your letter from Bradley to Halley can be found here:

http://rstl.royalsocietypublishing.org/content/35/399-406/637.full.pdf+html

There is also another work written by a certain Dr. August Busch who did some data reduction of Bradley's observations, located at the Internet Archive:

https://archive.org/details/reductionobserv00bradgoog

Enjoy. :wink:
 
Wow. Thank-you so kindly SteamKing!
 
Is a homemade radio telescope realistic? There seems to be a confluence of multiple technologies that makes the situation better than when I was a wee lad: software-defined radio (SDR), the easy availability of satellite dishes, surveillance drives, and fast CPUs. Let's take a step back - it is trivial to see the sun in radio. An old analog TV, a set of "rabbit ears" antenna, and you're good to go. Point the antenna at the sun (i.e. the ears are perpendicular to it) and there is...
This thread is dedicated to the beauty and awesomeness of our Universe. If you feel like it, please share video clips and photos (or nice animations) of space and objects in space in this thread. Your posts, clips and photos may by all means include scientific information; that does not make it less beautiful to me (n.b. the posts must of course comply with the PF guidelines, i.e. regarding science, only mainstream science is allowed, fringe/pseudoscience is not allowed). n.b. I start this...
How does light maintain enough energy in the visible part of the spectrum for the naked eye to see in the night sky. Also, how did it start of in the visible frequency part of the spectrum. Was it, for example, photons being ejected at that frequency after high energy particle interaction. Or does the light become visible (spectrum) after hitting our atmosphere or space dust or something? EDIT: Actually I just thought. Maybe the EM starts off as very high energy (outside the visible...
Back
Top