Smith's Illustrated Astronomy: Designed for the Use of the Public Or Common Schools in the United States ...Nichols & Hall, 1868 - 79 σελίδες |
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Σελίδα 5
... cause of education may be benefited , and the labors of instruction in Astronomy may be rendered more easy and pleasant , from the illustrations it contains . ASA SMITH , Former Principal of Public School , No. 12 , Seventeenth Street ...
... cause of education may be benefited , and the labors of instruction in Astronomy may be rendered more easy and pleasant , from the illustrations it contains . ASA SMITH , Former Principal of Public School , No. 12 , Seventeenth Street ...
Σελίδα 7
... caused a difference of one degree in the elevation of the pole , and in the position of the circles of daily motion of ... cause . Q. If the earth is moving in space , does it proceed in a straight line ? A. It does not ; but it would do ...
... caused a difference of one degree in the elevation of the pole , and in the position of the circles of daily motion of ... cause . Q. If the earth is moving in space , does it proceed in a straight line ? A. It does not ; but it would do ...
Σελίδα 11
... cause them to move in circular or elliptical orbits . Q. What is a circle ? A. It is a plane figure bounded by a ... causes it to approach the san ? A. The centrifugal force at the aphelion is not suffi- ciently great to prevent its ...
... cause them to move in circular or elliptical orbits . Q. What is a circle ? A. It is a plane figure bounded by a ... causes it to approach the san ? A. The centrifugal force at the aphelion is not suffi- ciently great to prevent its ...
Σελίδα 13
... cause of the spots on the sun . From the facts already known , the following appears to be the most rational view of ... cause that part of the sun to be of a higher temperature . An excess of heat at the sun's equator , with its ...
... cause of the spots on the sun . From the facts already known , the following appears to be the most rational view of ... cause that part of the sun to be of a higher temperature . An excess of heat at the sun's equator , with its ...
Σελίδα 15
... cause of the falling back of the signs of the ecliptic among the constellations ? A. It is caused by the retrograde motion of the equi- noxes . ( NOTE . ) Q. Upon what does the length of the seasons depend ? A. They depend upon the ...
... cause of the falling back of the signs of the ecliptic among the constellations ? A. It is caused by the retrograde motion of the equi- noxes . ( NOTE . ) Q. Upon what does the length of the seasons depend ? A. They depend upon the ...
Άλλες εκδόσεις - Προβολή όλων
Smith's Illustrated Astronomy: Designed for the Use of the Public Or Common ... Asa Smith Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
Smith's Illustrated Astronomy: Designed for the Use of the Public Or Common ... Asa Smith Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
Συχνά εμφανιζόμενοι όροι και φράσεις
angle Answer aphelion appear Aries ascending node Asteroids astronomers atmosphere brass meridian called CANIS MINOR Capricornus cause celestial circle cluster of stars comets constellation cube degrees Diagram diameter distance earth's orbit earth's shadow equator equatorial equinoctial equinox fixed stars full moon Gemini globe greater heavenly body heavens Herschel horizon inferior conjunction inferior planets Jupiter latitude LESSON Libra light and heat longitude magnitude Mars MEAN PLACE Mercury and Venus MOON PASSES MOON'S ASCENDING moon's orbit MOON'S SHADOW PASSES motion move nearly nebula Neptune night north pole North Star observed OPAKE BODY ORION parallax perihelion point of Aries polar primary planets principal stars Question rays retrograde motion revolution revolve right ascension rings rise round Saturn seasons seen situated solar system spots stone SUN ENTERS sun's superior conjunction supposed surface Taurus telescope tide total eclipse TRUE PLACE Uranus velocity visible west to east zenith zodiac Zodiacal Light
Δημοφιλή αποσπάσματα
Σελίδα 62 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds.
Σελίδα 11 - The squares of the periods of revolution of any two planets are proportional to the cubes of their mean distances from the sun.
Σελίδα 45 - Astrcea, the goddess of justice, who lived upon the earth during the golden age : but being offended at the wickedness and impiety of mankind during the brazen and iron ages of the world, she returned to heaven, and was placed among the constellations of the zodiac, with a pair of scales (Libra) in one hand and a sword in the other.
Σελίδα 11 - And even should an accumulation of disturbances, of which the absence of inequalities lessens the probability, bring the rings together, the velocities at the point of contact will be very nearly equal, and the two will coalesce without disastrous consequences." " If, in its normal condition, the ring has but one division, as is commonly seen, under peculiar circumstances it might be anticipated that the preservation of their equilibrium would require a separation in some regions of either the inner...
Σελίδα 61 - Find the longitude of the given place on the equator, bring it to that part of the brass meridian which is numbered from the equator towards the poles ; and then, under the given latitude, on the brass meridian, you will find the place required.
Σελίδα 61 - ... latitude and longitude of a star* RULE. Place the upper end of the quadrant of altitude on the north or south pole of the ecliptic, according as the star is on the north or south side of the ecliptic, and move the other end till the...
Σελίδα 49 - Mercury gave to Orpheus, and upon which he played with such a masterly hand, that even the most rapid rivers ceased to flow, the wild beasts of the forest forgot their wildness, and the mountains came to listen to his song. Of...
Σελίδα 61 - Problem 12 : ihen elevate the pole as many degrees above the horizon as are equal to the latitude of that place, and bring it to the brass meridian ; so will it then be the zenith or centre of the horizon.
Σελίδα 60 - Sun's place for the given day to the brass meridian; mark its declination) bring the given place to the brass meridian, and set the index to the...
Σελίδα 61 - Look for the given day in the circle of months on the horizon, against which, in the circle of signs, are the sign and degree in which the sun is for. that day. Find the same sign and degree in the ecliptic on the surface of the globe ; bring the degree of the ecliptic, thus found, to that part of the brass meridian which is numbered from the equator towards the poles ; its distance from the equator reckoned on the brass meridian, is the sun's declination.