Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Books Books 1 - 10 of 12 on The angular magnification of a telescope is therefore equal to the ratio of the focal....
" The angular magnification of a telescope is therefore equal to the ratio of the focal length of the objective to that of the ocular. "
Chandler's Encyclopedia: An Epitome of Universal Knowledge ... - Page 1498
edited by - 1898
Full view - About this book

The Popular Science Monthly, Volume 45

Science - 1894
...a single double-convex lens. With such a lens the magnifying power of the telescope is measured by the ratio of the focal length of the objective to that of the eye lens. Suppose the first is sixty inches and the latter half an inch ; then the magnifying power...
Full view - About this book

Pleasures of the Telescope: An Illustrated Guide for Amateur Astronomers and ...

Garrett Putman Serviss - Astronomy - 1901 - 200 pages
...a single double-convex lens. With such a lens the magnifying power of the telescope is measured by the ratio of the focal length of the objective to that of the eye lens. Suppose the first is sixty inches and the latter half an inch; then the magnifying power...
Full view - About this book

Physics

Charles Riborg Mann, George Ransom Twiss - Physics - 1905 - 449 pages
...and L'F is that of the eyepiece; so we see that the magnification of the telescope is determined by the ratio of the focal length of the objective to that of the eyepiece. Therefore, if we wish to make telescopes that shall have large magnifying powers, we must so construct...
Full view - About this book

The Plane Table and Its Use in Surveying

William H. Lovell - Plane-table - 1908 - 49 pages
...for high and low power, the former for clear and the latter for hazy weather would be a convenience. The magnifying power of a telescope is the ratio of the focal length of the eye-piece to that of the object glass. To ascertain the magnifying power, point the telescope towards...
Full view - About this book

New Laboratory Manual of Physics

Silas Ellsworth Coleman - Physics - 1908 - 264 pages
...the difference between the focal lengths of the lenses. 2. Compare the estimated magnification with the ratio of the focal length of the objective to that of the eye lens. 3. Copy Figure 82 and answer the questions under 4 of the discussion at the end of the preceding...
Full view - About this book

A Laboratory Manual of Physics for Use in Secondary Schools

Charles Elijah Linebarger - Experiments - 1911 - 175 pages
...power of a telescope is equal to (a) the ratio of the size of the image to that of the object; (6) the ratio of the focal length of the objective to that of the eye piece. How do the values of the magnifying power measured by the two methods compare? TABULATION...
Full view - About this book

The Encyclopedia Americana: A Library of Universal Knowledge, Volume 26

Encyclopedias and dictionaries - 1920
...about 1850. The magnifying power of telescopes is usually expressed in diameters and is indicated by the ratio of the focal length of the objective to that of the combination of lenses forming the eye-piece. For example, the Lick telescope has a focal length of...
Full view - About this book

The Manufacture of Optical Glass and of Optical Systems: A War-time Problem

United States. Army. Ordnance Dept - Glass manufacture - 1921 - 309 pages
...of the diameter of the entrance pupil to that of the exit pupil, and these in turn are determined by the ratio of the focal length of the objective to that of the eyepiece. Another method for ascertaining the linear magnifying power is to measure the angular vergency of the...
Full view - About this book

Manufacture of Optical Glass and of Optical Systems, a War-time Problem, May ...

United States. Army. Ordnance Department. War Department - 1921 - 307 pages
...of the diameter of the entrance pupil to that of the exit pupil, and these in turn are determined by the ratio of the focal length of the objective to that of the eyepiece. Another method for ascertaining the linear magnifying power is to measure the angular vergency of the...
Full view - About this book

A Course in Mathematics for Students of Physics:

Paul G. Bamberg, Paul Bamberg, Shlomo Sternberg - Mathematics - 1991 - 424 pages
...which equals l +/2 = _/l /2 A' This magnification is negative (the image is inverted) and its magnitude is the ratio of the focal length of the objective to that of the eyepiece. The general system We now want to show that any 2x2 matrix with determinant 1 can arise as the matrix...
Limited preview - About this book




  1. My library
  2. Help
  3. Advanced Book Search
  4. Download PDF