Henderson, C. Hanford (Charles Hanford), 1861-1941, Woodhull, John F. (John Francis), 1857-1941 · New York, D. Appleton and company · leaf 314
athematicallyabove our horizon by that amount oftime before we see him at all, and heremains visible to us for the samelength of time after he has reallypassed below the western horizon.Xow in eight minutes of time theearth will cover an angle of 2° inrotation. But the sun, as seen fromthe earth,… … Fig. 194.—The velocityof light. 292 PHYSICS XXIX, section 306.) The reports from the distant planetsare correspondingly retarded, but the delay is the mostnoticeable in the case of the fixed stars. The nearest one,a Oentauri, is so far off that it takes about three and ahalf years for its light to…
Physics
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
