Gilbert light experiments for boys . Fig. 126. You appear to a fish to be four-thirds bigger than you areK — 6 82 GILBERT BOY ENGINEERING. Fig. 127. The light bends at A Experiment No. 76. Shifting the glass plate flat on a piece ofpaper on the table. Stick the pinsA, B on each side (Fig. 127) and sightfrom pin A to B through the B appear to be shifted? Drawlines around the edges of the plate,aim a ruler at the two pins throughthe glass, and draw a line along theruler; then draw a line from B to Aand draw a line perpendicular to the edge of the plate at A. Thisshows that the
Gilbert light experiments for boys . Fig. 126. You appear to a fish to be four-thirds bigger than you areK — 6 82 GILBERT BOY ENGINEERING. Fig. 127. The light bends at A Experiment No. 76. Shifting the glass plate flat on a piece ofpaper on the table. Stick the pinsA, B on each side (Fig. 127) and sightfrom pin A to B through the B appear to be shifted? Drawlines around the edges of the plate,aim a ruler at the two pins throughthe glass, and draw a line along theruler; then draw a line from B to Aand draw a line perpendicular to the edge of the plate at A. Thisshows that the light which passes from B to A in glass is bentaway from the perpendicular when it enters air. Experiment No. 77. Shifting line. Put the plate on a pieceof paper (Fig. 128) and draw lines around the edge. Now drawa slanting line AB, sight along a ruler through the glass at thisline, and draw the line CD along the ruler. Is the line parallelto AB but shifted? Draw per-pendiculars at B and C anddraw a line from B to C. Thelight from A passes into theglass at B and is bent towardthe perpendicular at B; it pass-es from glass to air at
Size: 1647px × 1517px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectscientificrecreation
