At the magnetic dip equator, where the geomagnetic field is horizontal, this electric field results in an enhanced eastward current flow within ± 3 degrees of the magnetic equator, known as the equatorial electrojet.

At mid-latitudes, HF communications are disrupted by solar radio bursts, by X-rays from solar flares ( which enhance and disturb the ionospheric D-layer ) and by TEC enhancements and irregularities during major geomagnetic storms which are infrequent.

At random intervals ( averaging several hundred thousand years ) the Earth's field reverses ( the north and south geomagnetic poles change places with each other ).

At present, the overall geomagnetic field is becoming weaker ; the present strong deterioration corresponds to a 10 – 15 % decline over the last 150 years and has accelerated in the past several years ; geomagnetic intensity has declined almost continuously from a maximum 35 % above the modern value achieved approximately 2, 000 years ago.

At the edge of the field, the wild rolling land took over, dotted with fat round bushes like sheep.

At the start of the Battle of Gettysburg, July 1, 1863, Doubleday's division was the second infantry division on the field to reinforce the cavalry division of Brig.

At the age of 16 he apprenticed as a stonemason and by the age of 20 he had reached journeyman status in this field.

At last, however, Marlborough called a halt to the pursuit shortly after midnight near Meldert, from the field.

At the Master's level and higher, students tend to specialize in a particular field.

At the same time, computer scientists working in the field of Artificial Intelligence have pursued the goal of creating digital computer programs that can simulate or embody consciousness.

At every point in the field, the curl of that field is represented by a vector.

At the time home field advantage was rotated between each league.

At many universities, control engineering courses are taught in Electrical and Electronic Engineering, Mechatronics Engineering, Mechanical engineering, and Aerospace engineering ; in others it is connected to computer science, as most control techniques today are implemented through computers, often as embedded systems ( as in the automotive field ).

At each end is a goal 2. 14 m ( 7 feet ) high and 3. 66 m ( 12 ft ) wide measured from the inner sides of the posts and crossbar, and an approximately semi-circular area 14. 63 m ( 16 yd ) from the goal known as the shooting circle ( or D or arc ), bounded by a solid line, with a dotted line 5 m ( 5 yd 6 in — this marking was not established until after metric conversion ) from that, as well as lines across the field 22. 90 m ( 25 yd ) from each end-line ( generally referred to as the 23 m lines ) and in the center of the field.

At the start of each half, as well as after goals are scored, play is started with a pass from the centre of the field.

At least 20 were television weather reporters, some did not have science degrees, and 14 were listed as professors without specifying a field.

At sixteen years, Hackman left home to join the United States Marine Corps, where he served four-and-a-half years as a field radio operator.

At Jupiter, the outboard ( 11 m ) set of sensors could measure magnetic field strengths in the range from ± 32 to ± 512 nT, while the inboard ( 6. 7 m ) set was active in the range from ± 512 to ± 16, 384 nT.

At the beginning of the 20th century, early theoretical discussions in the field of psychoanalysis posited original bisexuality in human psychological development.

At the present time it is often closely aligned with the field of Science studies.

At least two fundamental non-terrestrial energy sources have been proposed: solar-powered energy generation ( unhampered by clouds ), either directly by solar cells or indirectly by focusing solar radiation on boilers which produce steam to drive generators ; and electrodynamic tethers which generate electricity from the powerful magnetic fields of some planets ( Jupiter has a very powerful magnetic field ).

At the time, SF was a field dominated by male authors, writing for a predominantly male audience, but women were starting to enter the field in larger numbers.

At the time of his retirement, Abdul-Jabbar was the NBA ’ s all-time leader in points scored, games played, minutes played, field goals made, field goal attempts, blocked shots, defensive rebounds, and personal fouls.

At this point the relative strengths of the two armies were beginning to reverse.

At the center of Family Re-Union is the belief that programs and guidelines should respond to the needs of families and communities, and should build on their strengths.

At its peak, One. Tel ’ s strengths were recognised in consumer marketing and information systems, intuitive platforms and resources based on R & D in the Australian Next Generation Network, One. Tel continued to build quality, value for money telephony products and services while remaining a low cost producer for a time.

At this post he was able to gather intelligence on troop strengths and other information on the French military that proved valuable in the campaigns to come.

At a group level, The Z Zurich Foundation ’ s mission is to help individuals and communities understand and manage risk, leveraging Zurich ’ s core strengths as an insurer.

At the end of year 9 students will sit a GCSE-style exam to assess their strengths and weakness and allow teachers to personalise the teaching of the students in year 10.

At the start of the year, each student was assigned a " Team ", based on that students strengths, " Team-A ", was primarily those students who were in accelerated college prep programs such as the I. B.

At first thought to be slower in school, but her strengths were discovered to be in math and science.

At the time, the strengths of PDI included character animation, lip synch, rendering effects, the aforementioned rig removal and cleanup, and performance animation.

At the close, the AAR leader summarizes comments from the observers, covering strengths and weaknesses discussed during the AAR and what the unit needs to do to fix the weaknesses.

At hatching, a typical salamander larva has eyes without lids, teeth in both upper and lower jaws, three pairs of feathery external gills and a long, somewhat laterally flattened body and tail with dorsal and ventral fins.

At this rate, a typical full-length 1500 byte ( 12000-bit ) data packet would take 77. 42 µs to transmit.

At the time Beatty was 27 and had served only 6 years as Lieutenant compared to the typical 12 before promotion.

At Earth's orbit its typical density is 6 ions / cm < SUP > 3 </ SUP > ( variable, as is the velocity ), and it contains a variable interplanetary magnetic field ( IMF ) of ( typically ) 2 – 5 nT.

At the other extreme, the slowest-moving plate is the Eurasian Plate, progressing at a typical rate of about 21 mm / yr ( 0. 8 in / yr ).

At that time, at least among the Mende, " a typical settlement consisted of walled towns and open villages or towns surrounding it.

At the beginning ( 4th c .) 92 % were buried, sometimes with typical Germanic weapons.

At the other, extreme end of the spectrum is fantastic-tech equipment that is hard for the typical person to comprehend ; this includes artifacts left over from extinct cultures as well as the product of current, highly advanced cultures.

At the time of the first settlelement there was still ancient forest, typical of the Harz, on the heights of the Klint, which had first to be cleared, hence the suffix-rode in the town name which means " clearing ".

At a more typical combat range of 3, 000 yards, giving a fairly flat trajectory and hence a long " beaten zone " for the bullets, a typical 3-inch or 75-mm field gun shrapnel shell would have a velocity of approximately 900 feet / second.

At first, everyone in Technical Services tried it ; a typical experiment involved two people in a room where they observed each other for hours and took notes.

At the age of 13, Garbo graduated from school and typical of a Swedish working-class girl at that time, she did not attend high school ; she would later confess she had an inferiority complex about this.

At the north and south, where the river Maine arrives in and leaves Angers, the landscape is formed by islands, ponds and floodplains which are a haven for birds and a typical flora of the Val de Loire.

At the close of the Civil War in 1865, the section where Cornelia is now located was a typical mountain forest.

At its " typical Hollywood opening " it was said, " bright lights will flood the sky, bands will blare, and the theatre will be officially presented to Mayor Fred Borgwordt of the town of Homewood.

At the lower end of a typical compound optical microscope there are one or more objective lenses that collect light from the sample.

At that time, " a typical trip might start at the Saranacs from which a party could make its way to the Raquette River via Indian Carry and Stoney Creek.

At times, the discussion became quite heated ; the Italian Marxist historian Rosario Villari, speaking of the work of Trevor-Roper and Mousnier, claimed that: " The hypothesis of imbalance between bureaucratic expansion and the needs of the state is too vague to be plausible, and rests on inflated rhetoric, typical of a certain type of political conservative, rather than on effective analysis.

At hip hop nightclubs, often owned and run by Africans, one would find clubbers wearing hip hop clothing typical of American youth such as oversized shirts, Tommy Hilfiger jeans and baseball caps.

At Trinity College Dublin under-graduate students are formally called " junior freshmen ", " senior freshmen ", " junior sophister " or " senior sophister ", according to the year they have reached in the typical four year degree course.

At the axon hillock of a typical neuron, the resting potential is around – 70 millivolts ( mV ) and the threshold potential is around – 55 mV.

At the time when Maudslay began working for Bramah, the typical lathe was worked by a treadle and the workman held the cutting tool against the work.