Light: A Series of Simple, Entertaining, and Inexpensive Experiments in the Phenomena of Light, for the Use of Students of Every Age |
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angle appear beam of light beam of reflection beam of sunlight beautiful block blue bottle bright centimetres centre circle clear close Cloth color curious dark diameter direction distance dotted drawing edge enters experiment falls fastened flask focus give glass gray green hand heliostat hold hole Illustrations inches incidence lamp lantern lens look manner marked means measure meet millimetres mirror moves Nature object opening paper passes picture piece position postal-card Price Prof Professor projection rays reflected reflected light refraction represents ring round SCIENCE screen seen shade shadow sheet shine shown side slide slip slit smoke spectrum square stand stars straight surface things tube turn violet wall wide window wood yellow