Abstract
Light energy travels outwards from its source, and a line showing its direction of travel is called a ray. When light from a bright source passes through a narrow slit in front of it, the light is easily seen where it falls on a surface, for exampleā€¯ a sheet of paper (Fig. 14.1). The bright line across the paper from the slit marks the path of the ray, which is a straight line.
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Ā© 1986 Macmillan Publishers Limited
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Keighley, H.J.P., McKim, F.R., Clark, A., Harrison, M.J. (1986). Reflections and Shadows. In: Mastering Physics. Palgrave, London. https://doi.org/10.1007/978-1-349-08849-2_14
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DOI: https://doi.org/10.1007/978-1-349-08849-2_14
Publisher Name: Palgrave, London
Print ISBN: 978-0-333-42052-2
Online ISBN: 978-1-349-08849-2
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