I'm not sure where to start with very basic cosmology

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    Cosmology
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Discussion Overview

The discussion revolves around the initial steps for learning basic cosmology, particularly for someone with no prior background in physics. Participants explore resources, including books and lectures, that could aid a beginner in understanding the foundational concepts of cosmology and related mathematical principles.

Discussion Character

  • Exploratory
  • Homework-related
  • Conceptual clarification

Main Points Raised

  • One participant expresses uncertainty about where to begin learning cosmology, emphasizing a lack of background in physics and mathematics.
  • Another participant suggests starting with non-mathematical lectures by Robert Wagner to build a foundational understanding of astronomy and cosmology.
  • A different participant recommends looking into lectures by Leonard Susskind for a more mathematical approach to modern physics and cosmology.
  • One participant argues that if one does not intend to become a cosmologist, learning the complex mathematics of general relativity may not be necessary, as cosmology can be understood at a basic level without deep mathematical knowledge.
  • Another participant mentions that gravity and orbits are foundational topics that can serve as a starting point for understanding cosmology.
  • A suggestion is made to read "An Illustrated Guide to Relativity" by Takeuchi as a good introductory book for special relativity.

Areas of Agreement / Disagreement

Participants generally agree on the importance of starting with foundational knowledge before delving into more complex topics. However, there are differing views on the necessity of learning advanced mathematics for understanding cosmology, with some suggesting it is not essential for casual learners.

Contextual Notes

Some participants highlight the need for a grounding in calculus and general relativity for deeper understanding, while others suggest that basic concepts can be grasped without extensive mathematical training. There is also a mention of various resources, but no consensus on a single best approach or resource.

astralarcher
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I understand that to make any sort of equations or mathematics I'll need some calculus and GR but beyond that I'm at a loss. What sort of books should I be picking up as a beginner before I can start touching on other things, such as GR? Is there something I should read before trying to attempt self-teaching differential equations or series expansions? I have no knowledge of where I should begin or where I should be asking this question. Specifics would be very helpful, such as certain books or certain authors I should be looking at. To give you an insight of where I would be starting, I have never had or took any courses in physics whatsoever and I have no idea what a Quantum Theory is. But I'm going insane wanting to learn more.
 
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Hi @astralarcher

Two suggestions for you - both of which I've watched and are excellent

A non-maths (or very basic maths content) set of lectures are available for download in lots of places by Robert Wagner. They are
ATR103 Introduction to Planetary Astronomy
ATR104 Introduction to Stellar Astronomy
Although it's astronomy and cosmology, it will give you a fabulous grounding in the basics and is some of the most accessible content I've ever watched / listened to. I would really recommend starting here before you move onto cosmology

If you then want to move onto the broader subject - with math... Leanord Suskind is one of the greatest tutors (in my opinion anyway!). Google "Modern Physics Cosmology Winter 2013" and download in your preferred format.

Both HACC and Stanford make great lectures available to the public for free
Best Regards
Matt
 
astralarcher said:
I understand that to make any sort of equations or mathematics I'll need some calculus and GR but beyond that I'm at a loss.
If you don't plan to be a cosmologist, there's little reason to try to learn the math of GR and modern cosmology. It's NOT simple and you'd need to go through several years of school to understand anything but the most basic mathematical concepts. Luckily, cosmology can be pretty well understood without getting into all the mathy bits.

Try here: http://www.astro.ucla.edu/~wright/cosmo_01.htm
And here: http://www.talkorigins.org/faqs/astronomy/bigbang.html#bigbang
 
Gravity is usually the jumping off point. You start with orbits and build from there.
 
To get started on special relativity, a good book is Takeuchi, An Illustrated Guide to Relativity.
 
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