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The sound barrier or sonic barrier is the large increase in aerodynamic drag and other undesirable effects experienced by an aircraft or other object when it approaches the speed of sound. When aircraft first approached the speed of sound, these effects were seen as constituting a barrier, making faster speeds very difficult or impossible.
A noise barrier (also called a soundwall, noise wall, sound berm, sound barrier, or acoustical barrier) is an exterior structure designed to protect inhabitants of sensitive land use areas from noise pollution. Noise barriers are the most effective method of mitigating roadway, railway, and industrial noise sources – other than cessation of ...
Smoke Gets in Your Eyes. " Smoke Gets in Your Eyes " is a show tune written by American composer Jerome Kern and lyricist Otto Harbach for the 1933 musical comedy Roberta. The song was sung in the Broadway show by Tamara Drasin. Its first recorded performance was by Gertrude Niesen, who recorded the song with orchestral direction from Ray ...
We've all grown up thinking that sitting too close to the television is damaging to our eyes ... but that might not be the case. Technology spawns lots of confusion ... and a few affectionately ...
Quest for Camelot (released internationally as The Magic Sword: Quest for Camelot) is a 1998 American animated musical fantasy film produced by Warner Bros. Feature Animation and distributed by Warner Bros.. It is very loosely based on the 1976 novel The King's Damosel by Vera Chapman. The film is directed by Frederik Du Chau (in his ...
Viewers saw an animated transition to the next broadcast story but instead of showing the anchors in the studio, the screen came back out to Brown's live shot without her knowing.
And in 1990, the U.S. enacted the Dolphin Safe label law, which the International Marine Mammal Project explains "permits the use of a Dolphin Safe tuna label only for tuna caught without any ...
Elevated workplace or environmental noise can cause hearing impairment, tinnitus, hypertension, ischemic heart disease, annoyance, and sleep disturbance. [ 3][ 4] Changes in the immune system and birth defects have been also attributed to noise exposure. [ 5] Although age-related health effects ( presbycusis) occur naturally with age, [ 6] in ...