Plumb-line sentence example
plumb-line
- The most obvious method of realizing this direction is by the plumb-line.
- Newton called attention to the fact that a falling body moves in a curve, diverging slightly from the plumb-line vertical.
- It consisted of a graduated circle inside which another could slide, carrying two small tubes diametrically opposite, the instrument being kept vertical by a plumb-line.
- In astronomy the horizon is that great circle of the sphere the plane of which is at right angles to the direction of the plumb line.
- It is considered to be an extinct volcano because it makes the plumb-line deviate only 7" to 8", from which it is deduced that the mountain is hollow.Advertisement
- Adjust the length of the plumb-line until it and the body oscillate together in unison.
- Take for example the vertical line which is embodied in the direction of the plumb line.
- Then the plumb line not only defines the zenith as already shown, but in a downward direction it defines the nadir, which is the point of the sphere directly below our feet.
- As thus determined it is the angle between the direction of the plumb-line at the place and the plane of the equator.
- The length of the plumb-line, measured from its point of suspension to the centre of the bob, is for all practical purposes equal to the length OC, C being therefore the centre of percussion corresponding to the selected axis 0.Advertisement
- Using a carpenter's level, draw a plumb line that runs from the outside corners of your bathtub.
- Latitude thus determined by the plumb-line is termed astronomical.
- It differs from the astronomical latitude only in being corrected for local deviation of the plumb-line.