The aircraft actually found the submarine before it entered the sonobuoy trap, flying over the hull so closely that the magnetic detector went off.
12.
Stores should use signs and voice warnings telling customers wearing pacemakers not to linger in the strong magnetic fields created by acusto-magnetic detectors, he said.
13.
The magnetic detector was much more sensitive than the coherers commonly in use at the time, although not as sensitive as the Fleming valve, which began to replace it around 1912.
14.
The Marconi magnetic detector was the " official " detector used by the Marconi Company from 1902 through 1912, when the company began converting to the Fleming valve and Audion-type vacuum tubes.
15.
On 12 September, " Thetis " experimented with a magnetic detector while " G-2 " lay on the bottom in of water and, in November, " G-2 " even conducted experimental work with patrol seaplanes.
16.
At the request of the U . S . military, the sweepers are collecting data on the ocean floor by sonar before trying to locate the bomb with magnetic detectors, said Shinya Kusano, spokesman for the Naval Defense Force.
17.
A number of hand emplaced units were developed for this role, including the MICROSID and MINISID, and a device designed to work with either called MAGID, a magnetic detector, designed to be triggered by amounts of metal as small as an infantry rifle.
18.
Baer found in his decision that the city could take reasonable measures to ensure the security of City Hall _ such as the use of magnetic detectors at the entrance to City Hall plaza _ without imposing the restrictions found in the regulation.
19.
In the " Handbook Of Technical Instruction For Wireless Telegraphists " by : J . C . Hawkhead ( Second Edition Revised by H . M . Dowsett ) on pp 175 are detailed instructions and specifications for operation and maintenance of Marconi's magnetic detector.
20.
Marconi transmitted from England to Canada and the United States . or " hysteresis magnetic detector ", was developed further by Marconi and was successfully used in his early transatlantic work ( 1902 ) and in many of the smaller stations for a number of years.
