...11. Canon to be made on a fast Table. also teach him to remember the great axiom at billiards, that the angle of reflection is always equal to the angle of incidence. This must never be forgotten. There is also a canon which will more fully illustrate the natural angles...

...sound-conveying medium moves to and fro. Page 22. A sound-wave is reflected when it falls upon a smooth surface. The angle of reflection is always equal to the angle of incidence. Page 25. An echo is a peculiar phase of reflection, when two points are symmetrically placed with reference...

...which they are moving, they are partially reflected and partially transmitted. In the reflected portion the angle of reflection is always equal to the angle of incidence. The transmitted portion is refracted, either away from or towards a perpendicular to the surface of...

...made in a middle pocket, and most easy to make at an equal angle. Without insisting on the axiom that the angle of reflection is always equal to the angle of incidence — an axiom which does not comrey a distinct idea to minds unmathematical — I will now endeavour...

...exFio. 42. periments in " Light," there is a law governing reflections. We found by our experiments that the angle of reflection is always equal to the angle of incidence, and the same law holds good in the reflection of sound. EXPERIMENT 74. — Another experiment in the...

...themselves of these facts. This is called the law of reflection, and is generally worded thus : 1. The angle of reflection is always equal to the angle of incidence. We should remark here, that the incident light is that from the source of light itself, be it from...

...motion. At what angle does the ball leave the solid body? It bounds off from the solid body, so that the angle of reflection is always equal to the angle of incidence, as is shown in Fig. 39. How may a stone be skipped on a smooth pond ? A stone may be skipped, by throwing...

...transparent or translucent. When light is reflected from a body, the direction of the light is changed. The angle of reflection is always equal to the angle of incidence. When light enters a transparent substance obliquely to the surface, it is refracted or bent out from...

...Surfaces. — Curved surfaces reflect rays of light in the same way that plane surfaces do : viz., that the angle of reflection is always equal to the angle of incidence. The rays, however, after being reflected, are no longer parallel, but converge towards one point, which...

...incidence ABD is equal to the angle of reflection CB D. reflected obliquely; or as optically expressed, the angle of reflection is always equal to the angle of incidence. A concave mirror may be regarded as the interior surface of a portion or segment of a hollow sphere....