convex lens n.
A lens having at least one surface that curves outward like the exterior of a sphere.
A convex lens is fixated on a slanted ceiling emanating a faint amount of soft white light.
A magnifying glass, or convex lens, if put in the right place, will do this.
The kind of lens we have been talking about is the convex lens.
In the opera glass this is a concave lens while in the other it is a convex lens.
The convex lens makes a clear image and it is the only kind of lens that will do this.
With a convex lens of about an inch focus, look attentively at a silver seal, on which a cipher is engraved.
A jeweler wears a convex lens on his eye when he works with small objects.
A convex lens is among the usual appendages to the tobacco pipe.
Fig. 108 shows diagrammatically how a convex lens forms an image.
The convex lens found at Nimroud shows that they were not unacquainted with magnifying instruments.