146 



ANNUAL REPORT SMITHSONIAN INSTITUTION, 193 5 



STAR DIAMETERS 



MEASURES MATJE BY PEASE WITH THE 20- FOOT MICHEUSON 



INTERFEROMETER ATTACHED TO THE lOO INCH HOOKER TELESCOPE 



OF THE MOUNT WILSON OBSERVATORY 



OTHER ASTRONOMICAL DISTANCES FOR COMPARISON 



FiGDRB 3. — Relative diameters of stars measured with tlie interferometer (Mount Wilson 

 Observatory). The circles show the size of certain stars relative to the sun and to the 

 orbits of the earth and Mars. 



