Special Publications Volume 89-90 (Paperback) - 5 Angebote vergleichen

Von Händler/Antiquariat, BuySomeBooks [52360437], Las Vegas, NV, U.S.A.
This item is printed on demand. Paperback. This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1922 Excerpt: . . . the recorded variations are to that extent erroneous. The same reasoning will apply to any other set of rectangular axes. We conclude, then, that a suspended magnet will respond to and correctly record that component intensity only to which it is perpendicular. Two variometers, whose suspended magnets are perpendicular to each other, will resolve the resultant horizontal intensity into two rectangular components. Thus, it will be seen, that the ordinary D and H variometers are but perpendicular kinds of XY variometers. The characteristics of XY variometers may be investigated in the same way as the case of D and H variometers. Control magnets may be usepf to increase or decrease the sensitiveness. Scale values may be derived from the observed deflections produced by a known change in that component field intensity which the variometer records. 32. Scale values of H variometer when magnet is in any position. --It will be of importance to derive expressions for the scale values of an H variometer when the suspended magnet is not perpendicular to the magnetic meridian. For this purpose it will be necessary to refer the suspended magnet to fixed axes. A little consideration will show that the magnetic meridian, so called, is not a fixed direction like the astronomic meridian. The magnetic meridian, being defined by the declination, varies periodically during the course of a day. We will, therefore, take as our fixed axes the mean direction of the magnetic meridian, and the mean direction of the magnetic prime vertical. We shall denote the northward intensity by N and the eastward intensity by E. The following relations subsist between the H, N, and E intensities, p being the angle between H and N. N H cos ip E Hsinp (170) In cases where p is a small angle, N . . . This item ships from La Vergne,TN.

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Von Händler/Antiquariat, The Book Depository US [58762574], Gloucester, ., United Kingdom.
Brand New Book ***** Print on Demand *****. This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1922 Excerpt: .the recorded variations are to that extent erroneous. The same reasoning will apply to any other set of rectangular axes. We conclude, then, that a suspended magnet will respond to and correctly record that component intensity only to which it is perpendicular. Two variometers, whose suspended magnets are perpendicular to each other, will resolve the resultant horizontal intensity into two rectangular components. Thus, it will be seen, that the ordinary D and H variometers are but perpendicular kinds of XY variometers. The characteristics of XY variometers may be investigated in the same way as the case of D and H variometers. Control magnets may be usepf to increase or decrease the sensitiveness. Scale values may be derived from the observed deflections produced by a known change in that component field intensity which the variometer records. 32. Scale values of H variometer when magnet is in any position.--It will be of importance to derive expressions for the scale values of an H variometer when the suspended magnet is not perpendicular to the magnetic meridian. For this purpose it will be necessary to refer the suspended magnet to fixed axes. A little consideration will show that the magnetic meridian, so called, is not a fixed direction like the astronomic meridian. The magnetic meridian, being defined by the declination, varies periodically during the course of a day. We will, therefore, take as our fixed axes the mean direction of the magnetic meridian, and the mean direction of the magnetic prime vertical. We shall denote the northward intensity by N and the eastward intensity by E. The following relations subsist between the H, N, and E intensities, p being the angle between H and N. N =H cos ip E = Hsinp (170) In cases where p is a small angle, N .

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Von Händler/Antiquariat, the_book_depository_.
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1922 Excerpt: ...the recorded variations are to that extent erroneous. The same reasoning will apply to any other set of rectangular axes. We conclude, then, that a suspended magnet will respond to and correctly record that component intensity only to which it is perpendicular. Two variometers, whose suspended magnets are perpendicular to each other, will resolve the resultant horizontal intensity into two rectangular components. Thus, it will be seen, that the ordinary D and H variometers are but perpendicular kinds of XY variometers. The characteristics of XY variometers may be investigated in the same way as the case of D and H variometers. Control magnets may be usepf to increase or decrease the sensitiveness. Scale values may be derived from the observed deflections produced by a known change in that component field intensity which the variometer records. 32. Scale values of H variometer when magnet is in any position.--It will be of importance to derive expressions for the scale values of an H variometer when the suspended magnet is not perpendicular to the magnetic meridian. For this purpose it will be necessary to refer the suspended magnet to fixed axes. A little consideration will show that the magnetic meridian, so called, is not a fixed direction like the astronomic meridian. The magnetic meridian, being defined by the declination, varies periodically during the course of a day. We will, therefore, take as our fixed axes the mean direction of the magnetic meridian, and the mean direction of the magnetic prime vertical. We shall denote the northward intensity by N and the eastward intensity by E. The following relations subsist between the H, N, and E intensities, p being the angle between H and N. N =H cos ip E = Hsinp (170) In cases where p is a small angle, N ... Paperback, Label: RareBooksClub.com, RareBooksClub.com, Produktgruppe: Book, Publiziert: 2012-05-16, Studio: RareBooksClub.com.

Lieferung aus: Vereinigte Staaten von Amerika, Usually ships in 1-2 business days.
Von Händler/Antiquariat, super_star_seller.
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1922 Excerpt: ...the recorded variations are to that extent erroneous. The same reasoning will apply to any other set of rectangular axes. We conclude, then, that a suspended magnet will respond to and correctly record that component intensity only to which it is perpendicular. Two variometers, whose suspended magnets are perpendicular to each other, will resolve the resultant horizontal intensity into two rectangular components. Thus, it will be seen, that the ordinary D and H variometers are but perpendicular kinds of XY variometers. The characteristics of XY variometers may be investigated in the same way as the case of D and H variometers. Control magnets may be usepf to increase or decrease the sensitiveness. Scale values may be derived from the observed deflections produced by a known change in that component field intensity which the variometer records. 32. Scale values of H variometer when magnet is in any position.--It will be of importance to derive expressions for the scale values of an H variometer when the suspended magnet is not perpendicular to the magnetic meridian. For this purpose it will be necessary to refer the suspended magnet to fixed axes. A little consideration will show that the magnetic meridian, so called, is not a fixed direction like the astronomic meridian. The magnetic meridian, being defined by the declination, varies periodically during the course of a day. We will, therefore, take as our fixed axes the mean direction of the magnetic meridian, and the mean direction of the magnetic prime vertical. We shall denote the northward intensity by N and the eastward intensity by E. The following relations subsist between the H, N, and E intensities, p being the angle between H and N. N =H cos ip E = Hsinp (170) In cases where p is a small angle, N ... Paperback, Label: RareBooksClub.com, RareBooksClub.com, Produktgruppe: Book, Publiziert: 2012-05-16, Studio: RareBooksClub.com.

Lieferung aus: Vereinigte Staaten von Amerika, Usually ships in 24 hours.
Von Händler/Antiquariat, Amazon.com.
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1922 Excerpt: ...the recorded variations are to that extent erroneous. The same reasoning will apply to any other set of rectangular axes. We conclude, then, that a suspended magnet will respond to and correctly record that component intensity only to which it is perpendicular. Two variometers, whose suspended magnets are perpendicular to each other, will resolve the resultant horizontal intensity into two rectangular components. Thus, it will be seen, that the ordinary D and H variometers are but perpendicular kinds of XY variometers. The characteristics of XY variometers may be investigated in the same way as the case of D and H variometers. Control magnets may be usepf to increase or decrease the sensitiveness. Scale values may be derived from the observed deflections produced by a known change in that component field intensity which the variometer records. 32. Scale values of H variometer when magnet is in any position.--It will be of importance to derive expressions for the scale values of an H variometer when the suspended magnet is not perpendicular to the magnetic meridian. For this purpose it will be necessary to refer the suspended magnet to fixed axes. A little consideration will show that the magnetic meridian, so called, is not a fixed direction like the astronomic meridian. The magnetic meridian, being defined by the declination, varies periodically during the course of a day. We will, therefore, take as our fixed axes the mean direction of the magnetic meridian, and the mean direction of the magnetic prime vertical. We shall denote the northward intensity by N and the eastward intensity by E. The following relations subsist between the H, N, and E intensities, p being the angle between H and N. N =H cos ip E = Hsinp (170) In cases where p is a small angle, N ... Paperback, Label: RareBooksClub.com, RareBooksClub.com, Produktgruppe: Book, Publiziert: 2012-05-16, Studio: RareBooksClub.com.