Ground vibrations is a technical term that is being used to describe mostly man-made vibrations of the ground, in contrast to natural vibrations of the...

Ground vibration boom is a phenomenon of very large increase in ground vibrations generated by high-speed railway trains travelling at speeds higher than...

officials to change the name. In mid-1976 the orbiter was used for ground vibration tests, allowing engineers to compare data from an actual flight vehicle...

bridges and viaducts) and lower structure maintenance costs Reduced ground vibrations, due to the above Lower adhesion coefficients for driving (powered)...

(waves traveling through air at the speed of sound), seismic waves (ground vibrations traveling through the earth), or ultrasound used for medical imaging...

react to substrate-borne vibrations. The vibrations are transmitted through the lower jaw, which is often rested on the ground and is connected with the...

the legs, a behavior known as juddering. This appears to produce ground vibrations that are picked up by the female. The pair then make contact using...

warning depends on accurate detection of the P waves and rejection of ground vibrations caused by local activity (such as trucks or construction). Earthquake...

simultaneous vibrations of different parts of the molecule. In general, a non-linear molecule with N atoms has 3N – 6 normal modes of vibration, but a linear...

sensitive to ground vibrations, the low-frequency sounds made by an insect crawling across the ground; the larva locates the source of the vibrations by the...

head and body off the ground, isolating the head from ground vibrations. Under selective pressure to detect airborne sound vibrations, the columella in crocodilians...

transparent "spectacle" scales. They do not have eardrums but can detect ground vibrations through the bones of their skull. Their forked tongues are used as...

the ambient wavefield or ambient vibrations in those disciplines (however, the latter term may also refer to vibrations transmitted through by air, building...

Rolls-Royce Trent 700 engines but no winglets in April 2018. It passed the ground vibration test in early June 2018, with Office National d'Etudes et de Recherches...

plywood base, supported on stacks of old tires to isolate it from ground vibrations, and filled with sand that had been washed to remove dust. The laser...

infrared-active stretching and bending vibrations, belonging to the T2 (sometimes written as F2) representation. These vibrations are triply degenerate and the...

which can be determined and verified through the use of calculations, ground vibration tests and flight flutter trials. Flutter of control surfaces is usually...

measurement, analysis and control. This might include: ground vibrations from railways and construction; vibration isolation to reduce noise getting into recording...

000–14,000 cm−1), whereas fundamental vibrations are observed below about 4000 cm−1. When the electronic and vibrational energy changes are so different, vibronic...

earthquake before it happened. However, they are simply more sensitive to ground vibrations than humans and are able to detect the subtler body waves that precede...

began ground vibration testing in Amarillo in February 2017, with the aircraft reaching 95 percent completion. The demonstrator was undergoing ground testing...

predatory pursuit. Several studies have indicated intentional use of ground vibrations as a means of intra-specific communication during courtship among...

detectors Mode partition noise in optical cables Seismic noise, spurious ground vibrations in seismology Cosmic microwave background, microwave noise left over...

hold its ground, leading to the notion that the death adder cannot hear. However, death adders, like other snakes, perceive ground vibrations. Unlike most...

and Deinacrida, some (such as Talitropsis) are very sensitive to ground vibrations sensed through pads on their feet. Specialised hairs on the cerci...

but follows the visual cue of the moving pipe and it can sense the ground vibrations from the snake charmer's tapping. Sometimes, for the sake of safety...

ground vibrations from railways; vibration isolation to reduce vibration in operating theatres; studying how vibration can damage health (vibration white...

well, but their sense of touch is very strong, and they can feel ground vibrations and electricity. Hattifatteners assemble once a year when they "recharge"...

excite the ground, causing the ground to vibrate a very small amount with the LDV used to measure the amplitude of the ground vibrations. Areas above...

movable eyelids, and most species have ears that can detect airborne or ground vibrations. They have muscular tongues, which in many species can be protruded...