In physics, sound is a vibration that propagates as a typically audible mechanical wave of pressure and displacement, through a medium such as air or water. In physiology and psychology, sound is the reception of such waves and their perception by the brain.
Acoustics
Acoustics is the interdisciplinary science that deals with the study of mechanical waves in gases, liquids, and solids including vibration, sound, ultrasound, and infrasound. A scientist who works in the field of acoustics is an acoustician, while someone working in the field of acoustical engineering may be called an acoustical engineer. An audio engineer, on the other hand is concerned with the recording, manipulation, mixing, and reproduction of sound.
Applications of acoustics are found in almost all aspects of modern society, subdisciplines include aeroacoustics, audio signal processing, architectural acoustics, bioacoustics, electro-acoustics, environmental noise, musical acoustics, noise control, psychoacoustics, speech, ultrasound, underwater acoustics, and vibration.
Sounding or urethral sounding is the medical use of probes called sounds to increase the inner diameter of the urethra and to locate obstructions in it. Sounds are also used to stretch the urethra in order to receive genital piercing.
Urethral sounding and urethral play are also used to refer to this practice in a sexual context.
Urethral play can involve the introduction of either soft or rigid items into the meatus of the penis (as well as farther in). Objects such as sounds are usually only inserted about halfway into the glans and can usually be easily retrieved. Other toys and items, such as catheters, may be introduced deeper; in some cases even into the bladder. Some items may even be allowed to curl several times or expand within the bladder. This action in the male may be directly or indirectly associated with stimulation of the prostate gland and some types of bladder control.
Risks
If not conducted carefully, sounding carries a risk of irritation, tearing of the urethra, or of urinary tract infection. Infections may become serious if they progress to the bladder or kidneys, and should be referred to a doctor.
In nautical terms, the word sound is used to describe the process of determining the depth of water in a tank or under a ship. Tanks are sounded to determine if they are full (for cargo tanks) or empty (to determine if a ship has been holed) and for other reasons. Soundings may also be taken of the water around a ship if it is in shallow water to aid in navigation.
Methods
Tanks may be sounded manually or with electronic or mechanical automated equipment. Manual sounding is undertaken with a sounding line- a rope with a weight on the end. Per the Code of Federal Regulations, most steel vessels with integral tanks are required to have sounding tubes and reinforcing plates under the tubes which the weight strikes when it reaches the bottom of the tank. Sounding tubes are steel pipes which lead upwards from the ships' tanks to a place on deck.
Electronic and mechanical automated sounding may be undertaken with a variety of equipment including float level sensors, capacitance sensors, sonar, etc.
Murder is the killing of another human being without justification or valid excuse, and it is especially the unlawful killing of another human being with malice aforethought. This state of mind may, depending upon the jurisdiction, distinguish murder from other forms of unlawful homicide, such as manslaughter.
Most societies, from ancient to modern, have considered murder a very serious crime deserving harsh punishment for purposes of retribution, deterrence, rehabilitation, or incapacitation. There are many reasons why murder has been criminalized, including its costs to society as well as being considered intrinsically wrong. For example, murder may be considered intrinsically wrong because it violates a right to life or is oppressive; murder may be costly to society by undermining law and order, by squandering potential accomplishments of the victims, by risking escalation of violence, or by spreading fear and grief.
In most countries, a person convicted of murder is typically given a long prison sentence, possibly a life sentence where permitted. In other countries, the death penalty may be imposed for such an act; this practice, however, is becoming less common.
Murderer (simplified Chinese: 杀人犯; traditional Chinese: 殺人犯) is a 2009 Hong Kong thriller film directed by Roy Chow, and starring Aaron Kwok. The film centers on a police detective investigating a series of gruesome murderers. As the case pulls him deeper, he soon realizes that he may be a prime suspect. The film co-stars Janine Chang, Cheung Siu-fai, Josie Ho and Chin Kar-lok, who also served as an action choreographer. Murderer is a co-production between Focus Features and EDKO Film, and was released theatrically in Hong Kong on 9 July 2009.
Plot
Ling (Aaron Kwok) is a married self-assured Police Chief Inspector with an adopted 5-year-old son who is investigating a cold-blooded serial murder case. However, due to the homicide attempt of a fellow inspector named Tai in which Ling emerged unscathed, colleagues are fast becoming aware of Ling's potential involvement. Ling suffered a loss of memory since that incident and cannot recall the events leading to Tai's attempted murder.
A murderer is a person who commits murder, the unlawful killing of a human being by another.
Murderer or Murderers may also refer to: