jump


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jump

The displacement of the image of an object occurring when viewing across the borderline between two portions of different power in a bifocal or trifocal lens. The jump is eliminated by placing the optical centres on the dividing line; the lens is then called a no jump bifocal (e.g. a monocentric bifocal with a straight dividing line) (Fig. J1). Syn. image jump; prismatic jump. See monocentric.
Fig. J1 Image jump upward caused by the segment of a bifocal lens, as the direction of gaze is lowered across the dividing lineenlarge picture
Fig. J1 Image jump upward caused by the segment of a bifocal lens, as the direction of gaze is lowered across the dividing line
References in periodicals archive ?
After so many years in the jump starter industry, we decided to create a jump starter that is both appealing in appearance and versatile in function," said Jerry Ye, CEO of Jump Monster.
The optimal distribution among hop, step and jump phases is set as an important affecting fact according to the triple jump performance.
Dream Jump Dubai will use multiple zip lines totalling over 10km of rope, suspended high over Dubai Marina.
gt; The dream jump allows jumpers to have a longer free-fall distance than in a bungee jump and have freedom of movement during a jump to perform different acrobatics.
This is similar to the basic jump with the only difference being that, while jumping, the left hand goes to the right side of the body and vice versa for the right hand, with arms crossing in front of the body.
The formula for the two-part jump was discovered by analyzing nearly 20,000 jumps made by a simple laboratory robot under a wide range of conditions.
I'm planning to do something a little bit bigger than Evel Knievel's biggest ever jump.
6 : to make a hasty judgment <Don't jump to conclusions.
Ilona Barnett, assistant to clerk of the course Stephen Lambert said: "There has to be a certain number of fences that have to be jumped and when we lled in our water jump, we replaced it with a fence near the bend.
Samuel Close kept pace in the triple jump by finishing third with a jump of 30-11 in the youth boys division.
Jog jump: Alternate your feet in a jogging movement as you jump the rope.
1) Jesse Williams finished second in the high jump Saturday at the USA Track & Field Indoor Championships at Roxbury Community College in Boston.

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