Armstrong collects 21.5kg of lunar rocks, while Aldrin sets up two scientific experiments to be left on the surface -- a seismic detector
and a laser reflector which is still in use today to measure the distance between the Earth and the moon.
Sarkisyan, "A radically new principle of operation seismic detector
of nano-scale vibrations," IEEE Transactions on Applied Superconductivity, vol.
Typical ranges of the 12047-371X seismic detector
are 50 metres for vehicles and 15 metres for personnel; for the 12047-372X magnetic detector the figures are respectively 25 and three and 100 and 50 metres for the 12047-373X passive infrared (the long-range version of the latter doubles those figures).
Virginia Military Institute will pitch its extremely low-frequency seismic detector
, a wireless communication system with a signal that can pass through the ground.
One of these was a seismic detector
which listened to moonquake activity and could send signals to the Nasa control room as soon as Aldrin set it up.
The seismic detector
uses high-frequency waves to displace soil and objects in it by less than 0.0001 inch.
The 200-meter sea barrier, which has been completed, is made up of three layers, including one below the sea level that is lined with seismic detectors
and other tools, a layer of armored stone, and a third layer in the form of a mound.
Lozano's goal set off such a commotion that seismic detectors
in the capital registered a false earthquake, which the geological institute said may have been generated by "massive jumps" across the city.
These include PDM infrared detectors with mirror optics, Seismic detectors
, glass break detectors, and magnetic contacts.
In preparation of the heist, he opened a security box at the bank and placed a loud alarm clock inside, set- ting it to go off at midnight in order to check the existence of any acoustic or seismic detectors
. He established that none was present and went on to
The team then left the area to carry on with planned research elsewhere but three days later were cautioned that seismic detectors
on the Cook Islands had detected violent activity around the volcano over a five-day period.
Recently, many seismic observatories have been established, and seismic networks of three-component seismic detectors
with broad-band frequency characteristics have been used for seismic observations, allowing the representation of the 3-D particle motion of seismic waves by the locus of the three-component signal.