Photographic and photo-visual magnitudes of stars near the North pole.
A comparison of the Harvard and Mount Wilson scales of photographic magnitude.
Our rough guess is there are 8,000 words in this book.
At a pace averaging 250 words per minute, this book will take 0 hours and 32 minutes to read. With a half hour per day, this will take 1 days to read.
How long will it take you?
This book will take an estimated to read at a reading speed averaging words per minute. With 30 minutes per day, this will take to read.
Enter your reading speedYou can take one of our WPM reading speed tests to find your reading speed.
Create a free account to track your reading progress, build your reading list, and set reading goals.
Word Count
8,000 words, Guess
Page Count
32 pages
Identifiers
- OCLC Control Number26033946
- Open LibraryOL6578661M
Classifications
- LCCQB4 .C32 no. 97, 98
Subjects
Reader Reviews
No reviews yet for this book.
Be the first to share your thoughts!