Fig. 93. centre and produce it to p. It will be found that RF pro-duced intersects Ap, let them meet at p. Draw pq perpen-dicular to the axis. Then pq is an image of PQ. In thiscase the image is real, inverted and magnified. Case (3). The object is at a distance from the lens greaterthan 2f. Let… … Fig. 94. An image pq is formed, and it will be found that the imagepq is in this case real, inverted and diminished. Hence we may sum up our results for convex lenses thus :A convex lens produces a virtual, magnified and erect image ofan object which is nearer to it than its own focal length. When…
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![An illustration from Essai de physique, par Mr. Pierre van Musschenbroek ... avec une description de nouvelles sortes de machines pneumatiques, et un recueil d'expériences par Mr. J. v[an] M[usschenbroek] Traduit du hollandois par Mr. Pierre Massuet .. (1751)](https://img.insideoutlibrary.com/img/200/ia-essaidephysiquep02muss-109-31.webp)
