Feb 3rd, 2012
Studypool Tutor
Price: $15 USD

Tutor description

An assignment on Magnetometers. - Timeline of Geomagnetism and Magnetometers - What is a Magnetometer? - Its Basic Use - Types of Magnetometers (Scalar and Vector) - Flux-gate - Proton Precession - Optically Pumped - SQUID

Word Count: 1680
Showing Page: 1/9
GEOL-508: GEOPHYSICSMAGNETOMETERS Timeline of Geomagnetism and Magnetometers100 A.D. The magnetic compass was invented in China.1180: The compass was first described in European texts by Guyot de Provins and Alexander Neckam.1576: Inclination i.e. the angle between the geomagnetic field vector and the horizontal was discovered by Robert Norman. 1600: William Gilbert noted that the variation of inclination with latitude was the same as that around a sphere of loadstone and deduced for the first time that Earth had a magnetic field.1634: From observations of the field declination in London, Henry Gellibrand concluded that the geomagnetic field changes over time.1701: Edmund Halley published the first geomagnetic field map, showing the declination throughout the Atlantic Ocean.1722: George Graham developed a compass that was sufficiently sensitive to observe the fluctuations that we now call "geomagnetic activity". 1740: The diurnal variation in that activity was first noted by Olof Hiorter. 1741: Hiorter observed large magnetic variations that were connected to local auroral displays and magnetic variations were also recorded in London by Graham. 1798: The relative intensity of the geomagnetic field at a no. of locations was measured by Alexander von Humboldt, who first described the disturbances he observed as "geomagnetic storms". His work attracted the interest of Carl Friedrich Gauss. 1828: Carl Gauss subsequently

Review from student

Studypool Student
" Excellent job "
Ask your homework questions. Receive quality answers!

Type your question here (or upload an image)

1826 tutors are online

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors