A more rational treatment, it appears, has been proposed by Dr. Robin, which is based on a number of seemingly well-founded scientifc arguments. The regime laid down is somewhat as fol- lows: 1 Breakfast at eight oclock in the morning, :onsisting Of a piece of meat, fowl, or cold hllm, a small piece of bread about ffteen grams , fresh fruit, and a cup of very weak and very hot tea, without milk and sugar; immediate-Iy after this meal take about at least half an hours walk, but not enough to become tired or short of breath.
Fruit ad libitum, bread, ffty grams. For drink, a large cup of hot water fayored 'With a little tea. Rise immediately after the meal and take a walk of at least half an hour. This cure is continued until the weight is reduced, if not to normal conditions, at least to an improved state. It is interrupted, if any indications appear that it is afecting the patient harmfully. After the cure is terminated, the eleven oclock meal is frst of all omitted, and then gradually the regime may be abandoned, proceeding with prudence, and exercising greater rigor every time the weight is observed to increase.
It has been calculated that the work really required the services of , men for thirty years. The pyramid occupies a space of twelve and three-quarter acres and is seven hundred and forty-six feet high and contains about ,, cubic yards of stone and granite. The materia. Naturalists have identifed this bird with the brown wood-Owl found in Hindustan. The natives' of Ceylon regard the cry of this bird with superstitious horror, for, it is claimed, its scream heard at night presages the most dire misfortunes.
A British. Its ordinary note, he states, is a magnifcent clear shout like that of a human being, heard at a great distance, and producing a fne efect in the silence of the night. Reference Terms.
Uranus has 27 known moons. Two more moons Ariel and Umbriel were discovered by William Lassell in In , Herschel's son John Herschel gave the four then-known moons their names. In Gerard Kuiper discovered the moon Miranda. Two more small inner moons were discovered by astronomers using the Hubble Space Telescope. Until , Uranus was the only giant planet with no known irregular satellites. Since then, nine distant irregular moons have been identified using ground-based telescopes.
The region between the main rings and Miranda appears to be very crowded. Astronomers believe it is made of carbonaceous material, and assume that much of the rest of the moons are of the same material.
A study of the moon suggested water ice is on its surface. Most of the other moons were so small and far away from the spacecraft that little is known about their composition and in some cases, their sizes. Belinda and Cressida have low reflectivity, indicating they are probably carbonaceous moons as Puck is. A study using the Hubble Space Telescope suggested these satellites called the "Portia group" in this study all have similar compositions and orbits.
Since , astronomers have turned up 12 new Uranus moons using the Voyager 2 data, as well as with newer observations with telescopes on or orbiting Earth.
Perdita has the most tangled history. The University of Arizona's Erich Karkoschka found the moon in using public Voyager 2 images and comparing them to some taken by the Hubble Space Telescope.
At first, the IAU designated it a moon, but then rescinded that when other astronomers couldn't find it. Perdita was made official again in when Hubble spotted it again. Caliban , found by a team at the Palomar Observatory in , moves in an inclined opposite orbit to the rotation of Uranus. The same team also found Sycorax , which appears red in telescopes and also has a retrograde orbit.
The latest finds took place in Hubble spotted Mab and Cupid , while and Margaret was found using the Subaru 8. With no spacecraft visiting Uranus in the near future and its sheer distance from the Earth, the potential for observations of its moons is limited. Uranus and its five major moons are depicted in this montage of images acquired by the Voyager 2 spacecraft during its January flyby of the planet.
Miranda is the smallest of the five major satellites of Uranus, measuring just kilometers miles in diameter. Voyager 2 passed between Miranda and Uranus during , and returned this color composite of the moon. The carved dark streaks on the surface of this icy moon turned out to be ridges and valleys in higher resolution images.
This high resolution image of Miranda was taken from a distance of 31, kilometers 19, miles , and shows a cratered surface broken by cliffs up to 20 kilometers 12 miles high. Such fractures and grooves in the satellite's surface indicate a complex geologic history.
0コメント