The truncation represents a lowering of the summit by some five hundred feet, with corresponding increase in the diameter of the crater (after Johnston-Lavis).
Speaking broadly, the diameter of the crater is a measure of the violence of the explosions within the chimney.
Blocks as much as twenty-five feet in diameter have been observed in the desert of western Texas, soon after being broken into several fragments at the time of a downpour of rain (Fig.
The size or height of the wave is measured by the diameter of the orbit of motion of the surface particle, and this is the difference in height between trough and crest.
One of these projectiles fully three feet in diameter was found at the distance of a mile and a half from the crater.
Its strength to withstand bursting pressures is dependent not alone upon the thickness of its rock walls, but also upon its internal diameter or caliber.
It is particularly likely to occur divided up into columns six inches to a foot in diameter and known as basaltic columns.
This Philippine volcano lies near the center of a lake some fifteen miles in diameter and about fifty miles south of the city of Manila.
In this design the tube is contracted so as to have a top diameter one fourth only of what it is at the bottom, where heat is directly applied by multiple Bunsen lamps.
The polar diameter is usually given as 1/299 shorter than the equatorial one.
One of the most remarkable of these water-filled basins is Crater Lake in Oregon, which has a diameter of about six miles and is believed to have resulted from the incaving of a great volcanic cone in the latest stage of its activity.
The entire atrio about the mountain lay buried in cinder to the depth of several feet and was strewn with projectiles which varied in size from a man’s fist to several feet in diameter (Fig.
A steam cylinder of given thickness of wall, as is well known, can resist bursting pressures in proportion as its internal diameter is small.
The diameter is not considered of much importance, except in so far as it is desirable to have it as nearly uniform as possible.
In digging up a tree, all the roots outside of a circle a few feet in diameter are cut off, and the tree is reset with its full head of branches.
Suppose it is required to describe an ellipse the longer diameter of which is 8 inches, and the distance between the foci 5 inches.
It grows best in river bottoms, where it is common and forms a valuable timber tree, attaining a height of 80 feet and a diameter of 4 feet.
It is usually less than 50 feet in height and 16 inches in diameter although trees of larger dimensions are occasionally found.
The tree attains a height of more than 100 feet and a diameter of 3 feet or more.
THE butternut, sometimes called the white walnut, is a smaller tree than the black walnut, although it may reach a height of 70 feet and a diameter of 3 feet.
It reaches a diameter of 30 inches and a height of 75 feet.
THE sassafras is an aromatic tree, usually not over 40 feet in height or a foot in diameter in Illinois.
It has a diameter of 2 miles, and is elliptic in outline, with a longer axis of about 3, and a circumference of about 7 miles.
The diameter of round or cylindrical body, as of a bullet or column.
To give an idea, a coil such as the present one will cover easily a plate of one metre indiameter completely with the streams.
Accordingly I prepared a tube about one inch in diameter and one metre long, with outside coating at each end.
A small tube about one-half inch in diameter and twelve inches long (Fig.
These jaws are arcs of a circle of the diameter of the rod R, and are made of hardened German silver.
The diameter of the armature wire in this type of machine should not be more than 1/6 of the thickness of the pole projections, else the local action will be considerable.
I take two tubes of thick Bohemian glass, about 5 centimetres in diameter and 20 centimetres long.
He then reduces the capacity until he comes to about the capacity of two spheres, say, ten centimetres in diameter and two to four centimetres apart.
A primary of a diameter something like six millimetres smaller than the inside of the tube may be inserted in the oil.
A simple way to improve in this direction is to employ a globe of the required size, but to place a small bulb, the diameter of which is properly estimated, over the refractory button contained in the globe.
Usually, a thin tube, of a diameter somewhat smaller than that of the glass stem, is made of the finest aluminum sheet, and slipped on the stem.
A hole about an inch diameter in the front side, half way to the top, is a great convenience for the bees to enter when coming home heavy laden.
The bees seem to make a provision for this emergency, the sheets of comb are farther apart than actually necessary at first, the diameter of the cell is also a little larger than the size of the young bee requires.
The walls of the capillaries are very sparsely provided with muscle fibers, but the very finest subdivisions of the arteries, which are really no larger in diameter than the capillaries, have much more smooth muscle in their walls.
They were found to be very small in diameter and to have very thin and delicate walls.
Across these two logs from front to rear we placed birch saplings one and one-half inches in diameter at the butt.
It was about fifteen feet in diameter at the base and seven feet high at the center.
It was only three feet in diameter at the top, so that he might not have even the luxury of lying down or sitting.
The walls are three and a half feet thick, and the diameter of one is about thirteen feet and the other eight feet in the interior.
The diameter of the interior of the cupola is 139 feet.
Some of the spires are of such great height in proportion to their diameter as to appear needle-like.
The diameter of the structure is one hundred and fifty feet, and the summit of the upper cornice over one hundred feet from the base, the entire height being one hundred and fifty feet.
The kauri-tree grows to an average height of a hundred feet, with a diameter of fifteen feet.
These columns are five feet in diameter and forty-five feet in height.
A fine specimen two inches in diameter was obtained from a mound on the French Broad River, Tenn.
In size the disks vary from very minute forms, one-tenth of an inch in diameter and one-thirtieth of an inch in thickness, to two inches in diameter and nearly one-half an inch in thickness.
One more very imperfect specimen obtained from a stone grave in the Cumberland Valley is nearly five inches in diameter and very irregular in outline.
The length of these perforations is quite remarkable, and it is difficult to understand how, with the primitive tools at the disposal of these people, a uniform diameter could be given throughout.
It is about four inches in diameter and is inscribed with the usual design, a central circle and dot surrounded by a triple involute and three concentric zones.
Its diameter varies from three-fourths of an inch to two inches; thickness, two-tenths in the center, thinning out a little towards the edges.
The smaller is about three inches in diameter and is nearly circular; it has suffered much from decay, but nearly all the design can be made out.
The larger perforations are three-eighths of an inch in diameter at the ends and quite small in the middle.
The font at Edburton in Sussex is 21 inches in diameter and 14 inches high; it has a wide band of foliage and at the top a row of trefoil panels.
The cists are plain circular boxes some ten inches diameter by fourteen inches high; one of these is decorated by simple circles and another has crossed rods of "reel and bead," with applied small panels of chariots and horses.
At Dorchester, Oxfordshire, the bowl is 2 feet 1 inch diameter 14 inches deep, it has an arcade wholly of seated figures of bishops.
These are much larger, 2 feet 8 inches in diameter by 1 foot 7 inches high.
The tube shown here is about an inch in diameter and several feet long.
Here the workmen crowned it with the first two courses of the iron cylinder--a collar 30 feet in diameter and about 12 feet high.
At the centre of the furnace, surrounding the core, there remains a solid mass of carborundum as large in diameter as a hogshead.
Assuming the aperture of the pupil to be one-tenth of an inch, and the object to be magnified a hundred times, the object-lens should have a hundred times the diameter of the pupil to render the image as bright as the object itself.
The reproducing point is a sapphire ball of a diameter equal to that of the gouge.
Cylinder records are made in two sizes, 2-1/2 and 5 inches in diameter respectively.
Phonographic records are of two shapes, the cylindrical and the flat, the latter cut with a volute groove continuously diminishing in diameter from the circumference to the centre.
In all modern weapons we use conical projectiles, fitted near the base with a soft copper driving-band, the diameter of which is somewhat larger than that of the bore of the gun, and cut a number of spiral grooves in the barrel.
Deloncle proposed that the object-lens should have a focal distance of about two hundred feet, since a long focus is more easily corrected than a short one, and a diameter of over fifty-nine inches.
The diameter of the chest and drum is not constant, but increases towards the exhaust end, in order to give the expanding and weakening steam a larger leverage as it proceeds.
An exposed mutograph film is wound for development round a skeleton reel, three feet in diameter and seven long, which rotates in a shallow trough containing the developing solution.
It is a tiny glass tube, about two inches long and a tenth of an inch in diameter inside.
They diminish gradually in diameter from the centre of the boat to the bow and stern.
The holes were of rather larger diameter than the interior of a gun barrel.
True, the motion is small; a circle of sixty feet indiameter will include the pole in its widest range.
Take the cube of the diameter in inches, or, which is the same thing, calculate the contents of a cubical box which would hold a sphere of the same diameter as the clear aperture of the glass.
For example, a body two feet in diameter attracts twice as strongly as one of a foot, one of three feet three times as strongly, and so on.
Of the diameter of this girdle we can say, almost with certainty, that it must be more than a thousand times as great as the distance of the nearest fixed star from us, and is probably two or three times greater.
The principle we apply is that round bodies of the same specific gravity attract small objects on their surface with a force proportional to the diameter of the attracting body.
If the diameter is double, the number of square inches will be double, and will require double the thickness to sustain equal pressure.
Be in direct proportion to the diameter thereof, in order to sustain an equal pressure per square inch; wherefore, we must reason with him on the long scale.
Their diameter is, in general, from twelve to eighteen feet (ample room here for lodgement); the walls were in certain places intersected with others equally strong.
He forms an estimate of the view he is to obtain of a planet by multiplying the apparent diameter of the planet by the magnifying power of his telescope, and comparing the result with the apparent diameter of the sun or moon.
Having then drawn a line to represent the sun's ecliptical diameter inclined to the horizontal diameter as above described, and having (with this line to correspond to ab in figs.
A cap with an aperture of about one-half its diametershould then be placed over the object-glass.
He is nearer to us in winter than in summer, and, of course, his apparent diameter is greater at the former than at the latter season.
Now if our observer describe a circle, and draw a diameter inclined according to above table, this diameter would represent the sun's equator if the axis of the sun were square to the ecliptic-plane.
But even this does not change the horizontal diameter and actually diminishes the vertical one.
By drawing a circle and square side by side, with the diameter of the former equal to the length of a side of the latter, this illusion is readily demonstrated.
Columns viewed against a background of white sky appear of smallerdiameter than when they are viewed against a dark background.
The moon is further away when near the horizon than when at the zenith, the maximum increase in distance being one-half the diameter of the earth.
They found that the relative apparent diameters of the sun and of the moon varied with altitude as follows: Altitude Relative apparent diameter 0 deg.
