What's the difference between detonation and percussion?

Detonation


Definition:

  • (n.) An explosion or sudden report made by the instantaneous decomposition or combustion of unstable substances' as, the detonation of gun cotton.

Example Sentences:

  • (1) Documentation referring to experiments testing a two-point detonation design are part of the evidence of nuclear weaponisation gathered by the IAEA and presented to Iran for its response.
  • (2) Mills said the operators' maps, which he copied, showed the mark was to be the site of a detonation.
  • (3) He believed that, even if Monis was paralysed, the explosive may have been connected to a “dead man’s switch” which would automatically detonate the bomb if the operator becomes incapacitated.
  • (4) A few seconds later there was a bang from the side of the Peugeot, as a small bomb stuck on to the window detonated, killing one of the men inside.
  • (5) It was wired with a mobile phone, most likely to act as a timer to detonate the device.
  • (6) Attaullah Khyogani, the spokesman for the governor of Nangarhar, said another seven people were injured in the attack, which began when a suicide bomber detonated explosives outside the consulate and ended with a gun battle between Afghan security forces and the militants.
  • (7) Visiting journalists were briefed by security officers on the latest attacks: five IEDs detonated or exploded in 48 hours; a car bomb discovered and detonated; and "a rash" of grenade attacks.
  • (8) A quick conversation was had about the potential for him to be drawing us into that stronghold and then detonating [a bomb] or killing the hostages or police as they entered.” The cafe manager, Tori Johnson, was executed by Monis 10 minutes later, prompting police to storm the cafe.
  • (9) That followed Pyongyang's snubbing of Beijing's wishes when it conducted a missile test in late 2012, followed by the underground detonation of a nuclear device last spring.
  • (10) In contrast, he says, a detonator could be built in a year, maybe less.
  • (11) News of the kidnapping came as Syria's state TV reported that a suicide attacker detonated his explosive vest in an unspecified government institution in Damascus, killing four and wounding 17.
  • (12) He also built mobile phone "detonators" that he supplied to undercover FBI agents posing as al-Qaida terrorists and expressed his pleasure when told him they had been used to kill American soldiers in Iraq.
  • (13) At least two people – a woman, identified by police as Abaaoud’s cousin, Hasna Aitboulahcen, who apparently blew herself up by detonating an explosive vest, and a man hit by multiple gunshots and a grenade – were known to have died in the seven-hour assault on the rundown apartment block .
  • (14) Refrain from detonating your little bomb,” one of the generals told the commander in charge of the test.
  • (15) In immediate terms, the detonation appears to have destroyed what remained of the six-party talks – the process whereby the US, South Korea, Japan, Russia and China had sought jointly to induce Pyongyang to abandon its nuclear programme.
  • (16) Bombs containing B. anthracis spores were detonated on Gruinard island in 1942 and 1943 as a part of a British research programme set up in response to fears that the Germans were developing biological weapons.
  • (17) For Islamuh Ahmad, an elderly resident of Shadel Bazar – about two miles from the blast site – the Moab detonation meant that he could come home.
  • (18) PETN is used legally by the military and in industries such as mining, where it is used in detonation fuses.
  • (19) Mindblowing doesn't begin to cover it – Klangband detonated a thermonuclear device in my consciousness.
  • (20) Asiri is believed to have built the device his brother used in an abortive assassination attempt on Saudi Arabia's deputy interior minister and the underwear bomb a Nigerian man tried to detonate over the US in 2009.

Percussion


Definition:

  • (n.) The act of percussing, or striking one body against another; forcible collision, esp. such as gives a sound or report.
  • (n.) Hence: The effect of violent collision; vibratory shock; impression of sound on the ear.
  • (n.) The act of tapping or striking the surface of the body in order to learn the condition of the parts beneath by the sound emitted or the sensation imparted to the fingers. Percussion is said to be immediate if the blow is directly upon the body; if some interventing substance, as a pleximeter, is, used, it is called mediate.

Example Sentences:

  • (1) The results of the Tinel percussion test, the Phalen wrist-flexion test, and the new test were evaluated in thirty-one patients (forty-six hands) in whom the presence of carpal tunnel syndrome had been proved electrodiagnostically, as well as in a control group of fifty subjects.
  • (2) It imitates the conventional percussion massage of the thorax by introducing high-frequency gas oscillations (300 impulses per minute) into the tracheobronchial system.
  • (3) The effect of manual percussion of the thorax in nine patients with stable chronic airflow obstruction and excessive tracheobronchial secretion has been studied.
  • (4) In seven patients with severe respiratory distress, conventional mechanical ventilation and PEEP were used initially for respiratory support, which was changed to high-frequency percussive ventilation (HFPV) at the same level of airway pressure and FIO2.
  • (5) The effect of indomethacin administration on the mortality rate of brain-injured rats was studied in four groups of animals subjected to a level of injury with a fluid-percussion apparatus predetermined to cause 50% mortality (50% lethal dose, or LD50).
  • (6) This study presents a new device for producing experimental, concussive head injury together with a detailed description of biomechanical features of fluid percussion brain injury in the cat.
  • (7) A newer technique, ausculatory percussion, has been reported as having a far higher sensitivity.
  • (8) Sheep fail to demonstrate changes in any of these variables after severe percussive wave brain trauma.
  • (9) Beneficial effects for opiate receptor antagonists have also been observed after fluid percussion head injury in cats.
  • (10) The chi-square results indicated that the peptostreptococcus were significantly related to apical radiolucency and B. melaninogenicus were significantly related to percussion or foul smell.
  • (11) These data demonstrate that fluid percussion injury in the rat reproduces many of the features of head injury observed in other models and species.
  • (12) Facebook Twitter Pinterest SprungDigi crew member creating percussion sounds for MusicMix.
  • (13) The subcutaneous thickening, the tenderness on compression and percussion of the hypothenar eminence or Raynaud's phenomenon of the last fingers should arise the suspicion of this syndrome, which will be confirmed by a positive Allen's test, Doppler examination or digitalized angiography.
  • (14) Bladder percussion produced contraction of the wall of the bladder and this was regularly associated with increased arterial mean and pulse pressures, a decreased heart rate and calf and hand blood flow, and venoconstriction.
  • (15) 10 out of 26 cases of pneumothorax could be suspected by percussion dullness.
  • (16) 31P magnetic resonance spectroscopy was used to determine the intracellular free Mg2+ concentration prior to and following fluid percussion induced traumatic brain injury in rats.
  • (17) This model employs the same fluid percussion device commonly used in in vivo brain injury studies.
  • (18) The fluid percussion device was attached over the right parietal cortex and a moderate (2.0 atm) intensity injury was produced.
  • (19) Neurological examinations revealed that she had facial diplegia, inverted V-shaped mouth, high-arched palate, talipes equinus, percussion myotonia of the tongue, generalized muscular atrophy and weakness, lordosis, areflexia, and congenital cataracta.
  • (20) The visco-elastic properties of a healthy tooth enabling the percussion of the Periotest tapping head to be decelerated in less than 1 ms are largely lost in periodontitis.