 | Friedrich Christian Accum - Chemistry - 1808 - 428 pages
...and highly elastic medium, all undulations are transmitted rectilinearly. It is well known that if a portion of a beam of light be intercepted by any...meeting the lines which terminate the opaque body. EXPERIMENT I. Darken a room into which the sun shines, and only admit the light by a small hole iu... | |
 | Sir Richard Phillips - Physics - 1826 - 236 pages
...intercepted upon the supposition that the rays move in right lines. . l-'.r/i. 1. Let a portion of abeam of light be intercepted by any body ; the shadow of...line. 3. Rays will not pass through a bended tube. 4. Rays of light may, therefore, be properly represented by right lines. 150. Rays or vibrations of... | |
 | Sir Richard Phillips - Physics - 1826 - 254 pages
...object, which would be intercepted upon the supposition that the rays move in right lines. Exp. 1. Let a portion of a beam of light be intercepted by...passing from the luminous body, and meeting the lines 'i which terminate the opaque body. 2. A ray of light, passing through a small orifice into a dark... | |
 | Alexander Alexander (optician.) - Eye - 1833 - 138 pages
...as that object will intercept. Further, if a portion of a beam of light be intercepted by an opaque body, the shadow of that body, will be bounded by right lines B* passing from the luminous body, and meeting the lines which terminate at that which is opaque. The... | |
 | Leonard Dunnell Gale - Physics - 1838 - 308 pages
...H3. That light moves in straight lines, may be shown by the following experiments:— Experiment 1. Let a portion of a beam of light be intercepted by...body ; the shadow of that body will be bounded by straight lines passing from the luminous body, and meeting the lines which terminate the opaque body.... | |
 | Leonard Dunnell Gale - Physics - 1838 - 280 pages
...in straight lines, may be shown by the following experiments: — Experiment 1. Let a portion of ft beam of light be intercepted by any body ; the shadow of that body will be bounded by straight lines passing from ihe luminous body, and meeting the lines which terminate the opaque body.... | |
 | Thomas Dick - Astronomical instruments - 1845 - 644 pages
...proceeding from the luminous body ; and from the form of the shadows which bodies project, which are bounded by right lines passing from the luminous body, and meeting the lines which terminate the interposing body. This property may be demonstrated to the eye, by causing light to pass through small... | |
 | Thomas Dick - Educational sociology - 1850 - 586 pages
...lines proceeding from the luminous body; and from the form of the shadova which bodies project that arc bounded by right lines passing from the luminous body, and meeting the lines which terminate the interposing body. This property may be demonstrated to the eye by causing light to pass through small... | |
 | Robert Kemp Philp - Questions and answers - 1857 - 360 pages
...light travels only in straight lines. Whenever, therefore, an opaque body intercepts a beam of light, the shadow of that body will be bounded by right lines,...passing from the luminous body, and meeting the lines that terminate the opaque body. 54.- What is the reflection of light ? ' I am come a light into the... | |
 | Thomas Dick - 1857 - 878 pages
...lines proceeding from the luminous body; and from the form of the shadows which bodies project that are bounded by right lines passing from the luminous body, and meeting the lines which terminate the interposing body. This property may be demonstrated to the eye by causing light to pass through small... | |
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Let a portion of a beam of light be intercepted by any body : the shadow of that body will be bounded by right lines passing from the luminous body, and meeting the lines which terminate the opaque body. 2. A ray of light, passing through a small orifice... 