! every thing is believable
?? why u can't belive it?
:pacman:
ok dear
get start and go on
good luck:thumbsup:
نمایش نسخه قابل چاپ
Hello dear friends:have a nice day:
I come to make this topic alive after 15 months :wink:
My favorite book that I want to introduce is " Introduction to cosmology by Barbara Ryden "
This book contains 12 chapters and 239 pages.
This book is based on the writer's lecture notes for an upper-level undergraduate cosmology course at the Ohio State University. This book is good for primarily juniors and seniors majoring in physics and astronomy.
Contents
1- Introduction
2- Fundamental Observation
3- Newton versus Enistein
4- Cosmic Dynamics
5- Single-Component Universes
6- Multiple- Component Universes
7- Measuring Cosmological Parameters
8- Dark matter
9- The cosmic Microwave Background
10- Nucleosynthesias and The Early Universe
11- Inflation and the Very Early Universe
12- The Formation of Structure
Hi my dear friend I put this article Because you know that we are close to the transit of Venus
This resource is also helpful for the amateur astronomer wishing to gain a better understanding of parallax, transit geometry and how the Astronomical Unit can be measured.
link : http://spacemath.gsfc.nasa.gov/SED12/VenusMath.pdf
source : http://spacemath.gsfc.nasa.gov
http://amateurastronomy.org/books/ob...able_stars.jpg
this book is the best source for the one how wants to start observing even without any optical object!
in this book we read about the basic laws of physics and astronomy and then we learn about variable stars professionally!
the language of this book is so easy and by simplifing the hardest laws it give us information about this kind of stars!:)
enjoy it....a member of this forum gave us link to DL it before in here