رسته‌ها
Astronomy With an Opera-Glass
امتیاز دهید
5 / 0
با 0 رای
نویسنده:
امتیاز دهید
5 / 0
با 0 رای
I kthe pages that follow, the author has endeavored to encourage the study of the heavenly bodies by pointing out some of the interesting and marvelous phenomena of the universe that are visible with little or no assistance from optical instruments, and indicating means of becoming acquainted with the constellations and the planets. Knowing that an opera-glass is cai)able of revealing some of the most beautiful sights in the starry dome, and believing that many persons would be glad to learn the fact, he set to work with such an instrument and surveyed all the constellations visible in the latitude of New York, carefully noting everything that it seemed might interest amateur star-gazers. All the objects thus observed have not been included in this book, lest the multiplicity of details should deter or discourage the very readers for whom it was 8i)ecially written. On the other hand, there is nothing described as visible with an opera-glass or a field-glass which the author has not seen with an instru. ment of that description, and which any person possessing eyesight of average quality and a competent glass should not be able to discern.
Lorem ipsum dolor sit amet, consectetur adipiscing elit.
mostafafarhoudi
آپلود شده توسط: mostafafarhoudi
۱۳۹۵/۱۱/۲۰
اطلاعات نسخه الکترونیکی
تعداد صفحات:
173
فرمت:
PDF

کتاب‌های مرتبط

درج دیدگاه مختص اعضا است! برای ورود به حساب خود اینجا و برای عضویت اینجا کلیک کنید.

دیدگاه‌های کتاب الکترونیکی Astronomy With an Opera-Glass

تعداد دیدگاه‌ها:
0
دیدگاهی درج نشده؛ شما نخستین نگارنده باشید.
افزودن نسخه جدید
انتخاب فایل
comment_comments_for_the_file
کاربر گرامی!
امکان خرید اشتراک از خارج کشور ایران، با استفاده از حساب پی‌پال فراهم شده است.