Search results
Results from the WOW.Com Content Network
Frame 150 from the Zapruder film. Kennedy's limousine has just turned onto Elm Street, moments before the first shot. The Zapruder film is a silent 8mm color motion picture sequence shot by Abraham Zapruder with a Bell & Howell home-movie camera, as United States President John F. Kennedy's motorcade passed through Dealey Plaza in Dallas, Texas, on November 22, 1963.
The creation of sparks from metals is based on the pyrophoricity of small metal particles, and pyrophoric alloys are made for this purpose. [2] Practical applications include the sparking mechanisms in lighters and various toys, using ferrocerium; starting fires without matches, using a firesteel; the flintlock mechanism in firearms; and spark testing ferrous metals.
Zapruder's movie camera was an 8 mm Bell & Howell Zoomatic Director Series Model 414 PD—top-of-the-line when it was purchased in 1962. [citation needed] Zapruder had planned to film the motorcade from his office window but opted for a better spot in Dealey Plaza where the motorcade would be passing. [16]
To investigate dark oxygen further, Ruff and his team traveled to a 3-kilometer-deep (9,500-foot-deep) mine in South Africa in August to sample water that had been trapped in the rock for 1.2 ...
Clint Hill jumping on the presidential limousine, as captured in the Zapruder film. Hill was riding on the left front running board of the Secret Service car immediately behind the presidential limousine. He heard what seemed to him to be a firecracker coming from his right, and as he was turning his head he noticed President Kennedy had been ...
Under vacuum, an equilibrium between the content of moisture and air (solved gases) in the liquid and gaseous phase is achieved. The equilibrium depends on the temperature and the residual pressure. The lower that pressure, the faster and more efficiently are water and gas removed.
Many gases can be put into a liquid state at normal atmospheric pressure by simple cooling; a few, such as carbon dioxide, require pressurization as well. Liquefaction is used for analyzing the fundamental properties of gas molecules (intermolecular forces), or for the storage of gases, for example: LPG , and in refrigeration and air conditioning .
Still image of Hugh Jamieson, during interview at KERA, circa 1970s. The Jamieson Film Company, a Texas film production company, was one of the crucial players in the emergence of Dallas as a center for commercial film production in the U.S. Founded by Hugh Jamieson in 1916, the Jamieson Film Company is perhaps most widely remembered for producing the first copies of the Abraham Zapruder film ...