s easily The analogy between sound and light is in many respects as a telescope. It is, in fact, a portable and adjustable small ear trumpet or funnel, which is shown on the table, is remarkable; they are both wave motions, governed by simi- whispering gallery, having many useful applications. used… … coasting off Brazil he heard the bells of to be better for this purpose. The ACOUSTIC APPARATUS. Fig. 2. San Salvador from a distance of 110 miles, engraving shows but one of the applica- tions of the reflector. It would be a by standing before the mainsail, which These will be hinted at further…
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